SELECT Select-Arc Premium Welding Products

108 Pages·2015·4.41 MB·English

FULL LINE CATALOG
Select-Arc Premium Welding Products
The Standard of Excellence in Tubular Welding Electrodes
SELECT
ARC
INC. ®
Welcome! TAbLE OF CONTENTS
INTrOdUCTION Copper-Free Wire
Thank you for your interest in
Select 70S-3NC ...........................................21
Select-Arc, Inc. We are proud to Technical Background and Manufacture .........4
Select 70S-6NC ...........................................21
offer the true standard of excellence Product Development .....................................5
Quality ...........................................................5
in tubular welding electrodes,
Productivity ...................................................5 LOW ALLOy ELECTrOdES
utilizing the latest in manufacturing Process Economics .........................................6
equipment and technology. Fume Generation Rate Discussion ..................6 NICkEL bEArING
Diffusible Hydrogen Discussion ......................7
Welding and Product Metallurgy ....................7 Flat and horizontal, Flux Cored
Our commitment is to set the
Select-Arc Metal Cored Electrodes ..................8 Select 81-Ni1 ...............................................22
industry standard by providing the
Select 81-Ni2 ...............................................22
highest quality products, the best Select 85-Ni3 ...............................................23
CArbON STEEL ELECTrOdES
service and most value-added to our
All Position, Flux Cored
customers. To accomplish this, we have GAS-ShIELdEd TUbULAr
Select 737-Ni ...............................................23
employed a team of what we believe to
Flat and horizontal, Flux Cored Select 810-Ni1 .............................................23
be the most qualified people to design, Select 70CRP ...............................................9 Select 820-Ni1 .............................................24
manufacture and support our superior Select 70TR ................................................9 Select 8000-SR .............................................24
quality products. In fact, the quality Select 71 ...................................................10 Select 810-Ni2 .............................................24
and performance of our products are a Select 71A .................................................10 Select 820-Ni2 .............................................25
Select 71P ................................................10 Select 910-Ni2 .............................................25
direct result of the skill and experience
Select Super 72 ........................................11 Select 937-Ni ...............................................25
of our employees. Our unprecedented
Select 75 ..................................................11
growth and success are attributed to Select 97 ..................................................11 All Position, Flux Cored
Self-Shielded
customers’ recognition of the service,
All Position, Flux Cored Select 78-Ni1 ...............................................26
response and quality that we provide.
Encore.......................................................12
The knowledge and experience of Metal Cored
Select 707 .................................................12
Select-Arc’s team will continue to Select 710 ................................................12 Select 80C-Ni1 .............................................26
Select 80C-Ni1LS .........................................26
ensure the performance level of Select 717 ................................................13
Select 80C-Ni2 .............................................27
today’s products and guarantee the Select 720 ................................................13
Select 720A ..............................................13
performance level of future products. Submerged Arc
Select 720HP ............................................14
Select Ni1S ...................................................27
Select 7000-SR ..........................................14
Select Ni2S ...................................................27
Select-Arc offers a complete line Select 721 ................................................14
Select Ni3S ...................................................28
of tubular welding electrodes, of Select 727 ................................................15
exceptional quality, to fulfill customer Select 737 .................................................15 NICkEL-MOLybdENUM bEArING
needs and requirements. Our rigorous Metal Cored Flat and horizontal, Flux Cored
engineering and manufacturing Select 70C-3 ..............................................15 Select 91-K2 .................................................28
standards ensure maximum quality Endurance .................................................16 Select 95-K2 .................................................28
in feedability, weldability and weld Select 70C-6 ..............................................16 Select 100-K3 ...............................................29
Select 70C-6LS ..........................................16 Select 110-K3 ...............................................29
performance. You have my word on this.
Select 70C-6 SR ........................................17 Select 115-K3 ...............................................29
Select 70C-6 ZN ........................................17
We believe that we offer the best Select 70C-7 ..............................................17 All Position, Flux Cored
available quality, service and value Select 70C-8 ..............................................18 Select 812-K2 ...............................................30
Select 70C-10 ............................................18 Select 910-K2 ...............................................30
in the industry. Try the Select line
Select 70C-T .............................................18 Select 920-K2 ...............................................30
of tubular electrodes and experience
Select 101-K3C, K3M...................................31
for yourself why SUbMErGEd ArC Select 111-K3C, K3M...................................31
Select-Arc is, and Select EH12K-S .........................................19 Select 101 SR ...............................................31
will continue to be, Select EM12K-S ........................................19
Metal Cored
The Standard Select EM13K-S ........................................19
Select 90C-M2 .............................................32
Of Excellence Select EM14K-S ........................................19 Select 100C ..................................................32
In Tubular FLUx COrEd SELF-ShIELdEd Select 100C-K3 ............................................32
Welding Select 120C ..................................................33
Flat and horizontal
Electrodes.
Select 74 ...................................................19 NICkEL-ChrOMIUM-
MOLybdENUM bEArING
All Position
Select 78 ...................................................19 Flat and horizontal, Flux Cored
Select 701 .................................................20 Select 115-K4 ...............................................33
Select 700GS .............................................20 Select 125-K4 ...............................................33
Select 4130LN ..............................................34
SOLId WIrE
Metal Cored
Copper-Coated Wire
Select 110C-M2 ...........................................34
Select 70S-3 ..............................................20
Select 110C-K4 ............................................34
Select 70S-6 ..............................................21
Select 4130C ................................................35
MANGANESE-MOLybdENUM All Position, Flux Cored Select 439Ti .................................................69
bEArING SelectAlloy 16-8-2-AP ..................................52 Select 18CrCb-C ..........................................69
SelectAlloy 307-AP .......................................53 Select 430L-Cb.............................................70
Flat and horizontal, Flux Cored
SelectAlloy 308H-AP ....................................53 Select 430LCb-Mod .....................................70
Select 105-D2 ..............................................35
SelectAlloy 308L-AP .....................................53 Select 430NbL ..............................................70
Select 91-D3 ................................................35
SelectAlloy 308L-AP CRYO ..........................54 Select FP 439Ti ............................................71
Metal Cored SelectAlloy 309H-AP ....................................54
Select 80C-D2 ..............................................36 SelectAlloy 309L-AP .....................................54
SelectAlloy 309LCb-AP ................................55 NICkEL ALLOy ELECTrOdES
CArbON-MANGANESE bEArING SelectAlloy 309LMo-AP................................55
Introduction ....................................................72
SelectAlloy 312-AP .......................................55
Flat and horizontal, Flux Cored Metallurgy of Nickel and Nickel Alloys ............72
SelectAlloy 316H-AP ....................................56
Select 80 ......................................................36 General Weldability Considerations .................72
SelectAlloy 316L-AP .....................................56
Select-Arc Nickel Cored Electrodes..................72
CArbON-MOLybdENUM bEArING SelectAlloy 316L-AP CRYO ..........................56
SelectAlloy 317L-AP .....................................57 All Position, Flux Cored
Flat and horizontal, Flux Cored SelectAlloy 347-AP .......................................57 SelectAlloy 82-AP .........................................73
Select 81-A1 .................................................36
SelectAlloy 182-AP .......................................73
Self-Shielded, Flux Cored
All Position, Flux Cored SelectAlloy 307TO-3 ....................................57 SelectAlloy C276-AP ....................................74
SelectAlloy 622-AP .......................................74
Select 810-A1 ...............................................37 SelectAlloy 308LTO-3 ..................................58
SelectAlloy 625-AP .......................................74
SelectAlloy 309LTO-3 ..................................58
ChrOMIUM-MOLybdENUM
SelectAlloy 309TO-3 ....................................58 Metal Cored
bEArING
SelectAlloy 316LTO-3 ..................................59 SelectAlloy 625-C ........................................75
Flat and horizontal, Flux Cored SelectAlloy 347TO-3 ....................................59 SelectAlloy 2216-C ......................................75
Select 81-B2 .................................................37
Metal Cored
Select 85-B2 .................................................37
SelectAlloy 16-8-2-C ....................................59
Select 85-B2L ...............................................38 hArdSUrFACING
SelectAlloy 307-C ........................................60
Select 91-B3 .................................................38 ELECTrOdES
SelectAlloy 307EU-C ....................................60
All Position, Flux Cored SelectAlloy 308L-C ......................................60 Select-Arc Hardsurfacing Products .............76-77
Select 810-B2 ...............................................38 SelectAlloy 308LSi-C ....................................61
Select 810-B2L .............................................39 SelectAlloy 309L-C ......................................61 build-Up and Joining Wires
Select 910-B3 ...............................................39 SelectAlloy 309LCR-C ..................................61 SelectWear BU ..............................................78
Select 910-B3L .............................................39 SelectAlloy 309LSi-C ....................................62 SelectWear MN ............................................78
Select 810-B6 ...............................................40 SelectAlloy 310G-C ......................................62 SelectWear GP ..............................................78
Select 810-B8 ...............................................40 SelectAlloy 312-C ........................................62 Metal-to-Metal Wear
Select 910-B9 ...............................................40 SelectAlloy 316L-C ......................................63
SelectWear 42 ..............................................79
SelectAlloy 316LSi-C ....................................63
Metal Cored SelectAlloy 317L-C ......................................63 SelectWear 43-S ...........................................79
SelectWear 52W ...........................................79
Select 80C-B2 ..............................................41 SelectAlloy 347-C ........................................64
SelectWear M7 .............................................80
Select 90C-B3 ..............................................41
dUPLEx SelectWear 420 ............................................80
Select 90C-B9 ..............................................41
SelectWear 423 ............................................80
All Position, Flux Cored
WEAThErING STEEL
SelectAlloy 2209-AP .....................................64 Metal-to-Earth Wear
All Position, Flux Cored SelectAlloy 2553-AP .....................................64 SelectWear 44 ..............................................81
Select 810-W ...............................................42 SelectAlloy 2594-AP .....................................65 SelectWear 50 ..............................................81
SelectWear 57GW ........................................81
Metal Cored Metal Cored SelectWear 58 ..............................................82
Select 80C-W ...............................................42 SelectAlloy 2209-C ......................................65 SelectWear 60HB..........................................82
Low Alloy Properties Summary Tables .......44-47 SelectAlloy 2594-C ......................................65 SelectWear 60HC .........................................82
SelectWear WP60 .........................................83
MArTENSITIC
SelectWear 62 ..............................................83
Flat and horizontal, Flux Cored SelectWear 63 ..............................................83
STAINLESS STEEL Select 410 ....................................................66 SelectWear 65 ..............................................84
ELECTrOdES Select 410NiMo ...........................................66 SelectWear 600TIC ......................................84
SelectWear Zucar..........................................84
Technology ......................................................48
All Position, Flux Cored
Quality ............................................................48
Select 410-AP ...............................................66
Productivity .....................................................49
Select 410NiMo-AP ......................................67 TEChNICAL INFOrMATION
Metallurgy .......................................................49
Metal Cored Electrode Comparability Charts .................86-90
AUSTENITIC
Select 410-C .................................................67 Hardsurfacing Electrode
Flat and horizontal, Flux Cored Select 410NiMo-C ........................................67 Comparability Chart .................................91
SelectAlloy 308L ..........................................50 Welding Parameters/Deposition Rates ......92-100
FErrITIC
SelectAlloy 308L CRYO ................................50 Current Approvals .................................101-102
SelectAlloy 309L ..........................................50 Metal Cored Measurement Conversion Table .....................103
SelectAlloy 312 ............................................51 Select 409Cb ................................................68 Select-Arc Electrode Packaging ......................104
SelectAlloy 316L ..........................................51 Select 409Ti .................................................68
SelectAlloy 316L CRYO ................................51 Select FP 409Ti ............................................68
SelectAlloy 317L ..........................................52 Select HT 409Ti ...........................................69
SelectAlloy 347 ............................................52
Technical background
I
and Manufacture
N
Tubular welding electrodes, originally referred plate sections and hot rolled steels. In addition
to as flux cored wires, were introduced to the to all these advantages, the faster burnoff of the
T welding industry in 1956. These early products tubular wires resulted in higher deposition rates
were manufactured in larger diameters, such than those achievable by solid wires. The sum
r as 3/32", 7/64" and 1/8". The manufacturing total of these features produced lower welding
methods were the same, basically, as today; form costs per lb of weld metal than the welding in-
O steel strip into a U profile, fill it with fluxing and dustry had seen in the gas-shielded arc process.
deoxidizing ingredients, close it into a round There were other technical advantages as
tube and draw it to finished size. There have well. Fluxing agents and deoxidizers added
d
been many innovations and technical advances to the core enable the designer to “tailor” the
in the manufacturing and processing of these electrode to the application. For example,
U products, which will be discussed later, but the manganese can be increased or nickel added
concepts are still the same. The first shielding to enhance the toughness properties. Modifi-
C gas was carbon dioxide, as the blended gases cations can be made to the slag constituents
were used strictly in GMAW and GTAW. to change the molten slag viscosity, hence
changing the bead shape or allowing travel
T
speed alterations. These types of changes are
obviously not possible with solid wires.
I
Cored wire technology has continued to
O advance during the 50 years since its intro-
duction. Select-Arc has pioneered many new
N advances in manufacturing technology; these
include the areas of tube formation, feeding,
drawing lubricants and baking. Our custom-
designed tube mills form the strip with great
precision and close it into a tube with a tightly
butted seam and unmatched roundness. Flux
feeders are engineered to meter the fill ingre-
dients uniformly and precisely with minimum
spillage. This is a tremendous aid to quality and
Tubular Wire Solid Wire efficiency, as there are minimal particles free to
The current primarily The current travels cling to the tube, and seam, acting as an abrasive
travels through the through the entire cross grit which could harm the wire surface and the
outer sheath of the wire. section of the wire. tube mill. The drawing equipment promotes
rigid control of wire surface and diameter
Current = AMPS Current = AM PS during the reduction process. These state of the
Density TT[d-d]2 Density TT[ d ]2
1 2 1 art machines guard the wire surface integrity
2 2 from tube closure to final sizing; the result is a
Thus for equival ent amperage tubular wire which feeds smoothly and exhibits
settings a tubular wire will yield higher
superb electrical pickup. Baking of the drawn
current densities.
wire, to remove residual drawing lubricant, is
performed in ovens with accurate temperature
From the introduction of this process, the and time controls, assuring clean surfaces and a
economic advantages were immediately obvi- finished product with low weld metal diffusible
ous. Tubular wire has a current carrying cross hydrogen levels.
sectional area of steel which is a fraction of The dry mixes of core ingredients are
that compared to solid wire. Because electrical weighed and mixed with equally impressive
current is only carried by the steel sheath, cored equipment and technology. Each raw mate-
wire burns off much faster and easier than that rial is specially sized for optimum blending
of solid wire. Welding electrodes are melted ability. Weights are determined on calibrated
by the electrical power, or I2R; the less cross scales, and each component of the mix is check
sectional area, the more power per square weighed after initial weigh-in. Mixing is done
inch is available to melt the electrode. Because in blenders designed especially for dry ingre-
the core ingredients do not conduct current, dients of varied densities to ensure complete,
only the tube, or sheath, of the cored wire is homogenous blending. These mixes are then
absorbing current and melting the electrode. stored in containers which are engineered to
Combined with carbon dioxide shielding, which prevent segregating while waiting to be utilized
provides exothermic heating of the weld puddle at the production line.
as it dissociates, the melting characteristics and The combination of our technically
fluxing agents promote better penetration and advanced equipment, modern measuring
greater tolerance of mill scale than previously instruments, efficient production techniques
attainable with solid wires. The fluxing action of and skilled workers results in the production
the slag ingredients also eliminated the porosity of the most consistent, highest quality tubular
and other subsurface defects usually encoun- welding electrodes in the marketplace.
www.select-arc.com tered with solid wires when welding on heavy
4
Product development
Technical, engineered products such as flux raw materials are checked carefully to verify tion and the spray mode, but deposition rate
cored and metal cored electrodes are not very compliance with purchase specifications. A increase is mostly linear. Tubular wire, converse-
useful without a vigorous product development sample of finished electrode from each mix ly, reaches transition very quickly and increases
program behind them. Customer applications, is weld tested to ensure that welding perfor- exponentially with current density increases.
new steel technologies, increased demands on mance, such as feedability, arc stability, bead The result is lower cost per pound of depos-
weldments and environmental considerations geometry and any specification requirements ited weld metal than with solid wire or covered
all require constant upgrading of mature conform to the appropriate standards. electrodes, due to the much higher amount of
products and development of new products. The combination of these efforts helps metal deposited per unit time.
These efforts invoke the talents of develop- us maintain the common goal of supplying Travel speeds are very important to welding
ment engineers who have the metallurgical and the best quality in tubular electrodes to the cost when making fillet or lap welds on mate-
chemical backgrounds to design slag systems welding industry. In addition, the Select-Arc rial ranging from moderate plate thicknesses
and alloy types to satisfy market demands. Quality System is approved by ABS, CWB, down to sheet metal. On applications from
Application engineers are necessary to convey NAVSEA, and is registered to ISO 9001. truck frames to exhaust systems, the amount
customer needs and requests to the develop- Facility surveys have been conducted by Lloyd’s of time saved on these seemingly simple welds
ment people, to ensure that product designs and and DNV with no negative findings. These are can add up to incredible cost savings. The
modifications are completed in a timely fashion. possible because of the total commitment to productivity increases can lower the unit cost
More importantly, the application engineers and quality shared by everyone in the company. of products and improve profitability. In these
welding technicians work in unison to make applications, we have the option of selecting
sure the products from the development group Productivity either flux cored or metal cored electrodes,
perform to customers’ expectations.
depending on the type of weldment and the
The Select-Arc technical staff is available In every walk of life, in every business and
customer requirements. When the material
for more than research of technology and in each profession, it is difficult to dispute
to be welded is sheet metal and too thin for
development of new and improved products. the fact that time is money. There have been
the penetration of flux cored electrodes, metal
Our group of professionals is also capable of numerous studies performed over the years
cored can make these welds look easy, with no
helping with metallurgical problems, welding proving that filler metal cost is actually a very
burn through and no slag residue. For heavier
difficulties and product performance issues. We small portion of total welding costs. The time
plate thicknesses, where defect-free fillet welds
spend a great deal of time and money visiting cus- involved in depositing weld metal and in weld-
are required, flux cored electrodes are avail-
tomers and learning what must be done to solve ing components is responsible for the lion’s
able in many varieties. The gas-shielded grades
a problem, and then doing it. Our strength is not share of total welding cost. With this in mind,
produce the finest fillets with respect to
just realizing what the solution is, but responding Select-Arc’s applications group spends consid-
bead shape and cosmetics, slag removal, and
in rapid fashion, with the right answer at the right erable time working on improving deposition
mechanical properties. There are several self-
time. That answer may be a technical report, an rates, increasing travel speeds and reducing
shielded types for specialized applications; fillet
improved welding procedure, an improved weld- cycle times in the weld cell. Working closely
and lap welds on coated steels, lap welds on
ing electrode or a totally new welding electrode. with product development engineers, there are
trailer frames at travel speeds of up to 120 ipm,
The answer is provided in a timely manner. many case studies wherein products have been
and high deposition rate fillet and groove welds
developed to deposit metal faster into a groove,
on heavy plate sections. In any event, Select-Arc
Quality travel up to 50 percent faster in a lap weld, and has the right product to lower your welding
Quality is a way of life at Select-Arc. It is a bridge gaps without burn-through to improve costs with the proper combination of bead
corporate culture, not merely sets of books cycle times in a welding cell. shape, travel speed and penetration.
containing policies and procedures. We pride Deposition rates are important when deal- There are times when poor fit up and gaps
ourselves on striving to maintain the highest ing with groove welds and large fillet welds, in the weld joint add a tremendous degree of
quality standards in the industry, not with especially on plate thicknesses of 3/4” and difficulty to welding the part. In fact, the wrong
slogans and pep rallies, but with training, greater. The easier melting characteristics of electrode selection can make welding so difficult
educating, communicating, and paying atten- tubular wire, discussed earlier, promote much that reject rates will be astronomical. Select-Arc
tion to detail. To paraphrase a famous football higher deposition rates than solid wire or offers several unique metal cored electrodes that
coach, “quality is not a sometime thing, it is an covered electrodes, which substantially re- are designed to provide controlled penetration,
all the time thing”. Building quality into the duces the time required to make these welds in with a very wide arc plasma, which combine to
product starts when raw materials arrive at comparison to the other processes. The nature promote bridging of gaps and poor fit up with
the dock and continues up to loading finished of tubular wire melting, which is a steady stream no burn through. In addition, travel speeds
product into trucks at the shipping dock. of small, molten droplets, produces enhanced are greatly enhanced over conventional metal
penetration into the throat and fusion into the cored products. The cost savings here are very
Select-Arc’s commitment sidewalls. Coupled with carbon dioxide shield- real and very significant; faster welding speeds,
ing gas, which generates heat (its dissociation is bridging gaps and poor fit up and controlled
to quality is not limited to a
exothermic) in the arc, the flux cored arc exhibits penetration result in increased productivity,
superbly trained workforce superior penetration which cannot be matched lower welding cost, higher quality, and reduced
by solid wire or covered electrodes on heavier or reject rates. Improvements and ultimate savings
and skilled management.

scaled plate sections. The use of argon/carbon such as these should not be ignored.
A considerable investment in modern manu- dioxide shielding gas blends with flux cored Training costs are much lower with
facturing equipment has been made, along wire will help reduce welding fumes, increase tubular wires than with the GMAW and SMAW
with measurement devices to monitor key, deposition rates and still produce improved processes. This ease and rapidity of training
in-process checkpoints. Important process penetration depths compared to solid wire. not only reduce the training costs, but also
variables such as fill percentage, wire diameter, There really is no way for solid wire to compete allow the welders to become productive very
strip dimensions, bake cycles and welding with the tubular wire process, wire for wire, in quickly and start contributing to the company’s
performance are scrutinized closely by deposition rate increases. As current density bottom line.
production and quality personnel. Incoming increases, the solid wire gradually enters transi- The performance and proficiency of all
5
position, flux cored electrodes have saved a rates and the faster completion of the weldment, electrodes and solid wire. The cost of filler
considerable amount in welding costs since the total cost of welding is far less than with the metal, however, is less than 10% of total welding
their introduction more than thirty years ago. use of covered electrodes. In addition, solid cost; labor and overhead expenses account for
The deposition rates of these products are two wires have long been plagued with subsurface approximately 80% of the total welding cost
to five times those of solid wires and covered porosity when applied to tight joint designs, due in a manufacturing operation. Obviously, this
electrodes. They also provide much better
to the inability to allow gases to release. Metal area of cost is where the only significant savings
sidewall fusion and fewer subsurface defects
cored wires have no problem in these narrower can be realized. Factoring in the higher deposi-
than the other processes, reducing expensive
gap welds, as the pure spray transfer keeps the tion rates and electrode efficiencies, and the
rework costs, if not outright eliminating them.
weld puddle molten for sufficient time to allow accompanying increases in productivity, the
No process outperforms flux cored electrodes
gases to escape the weld pool. Now a narrow use of tubular welding electrodes should
in all position welding, and no process offers less
joint can be welded with no slag entrapment, reduce labor and overhead costs, making them
expensive cost per pound of weld deposit.
no subsurface porosity and minimal weld metal actually less expensive to use than covered or
Another area where tubular wires offer
volume, adding up to huge cost savings when solid electrodes.
significant cost reductions is that of joint
design. The deep penetrating characteris- compared to welding with solid wire. In order to demonstrate this realization
tics of tubular electrodes allow the use of of cost savings in a mathematical fashion,
Process Economics
tighter, hence smaller, joints than feasible with Select-Arc has constructed a format for cal-
covered electrodes, saving considerable weld Any hesitation to convert to tubular wires culating welding costs within a production
metal volume and cost. Coupled with the is usually caused by concern over the cost, operation. Following is an example of this Cost
productivity savings from higher deposition which normally is higher than both covered Calculator and how it functions.
Fume Generation rate discussion the electrodes employed normally produce among the various welding processes.
the higher fume generation rates. Conversely, Select-Arc manufactures several flux cored
Welding fume is generated by the vaporization
the use of more inert gas blends, lower melt- and metal cored electrodes which have much
of the molten metal in the weld puddle. The ing rates and more refractory additives can lower fume generation rates than conven-
temperatures produced by the melting of each lower fume generation rates. The method tional products. In most cases, these products
particular filler metal determine the amount of for measuring fume generation rates is the provide reductions in fume generation of 40 to 60
vaporization which occurs, as do variables such AWS document F1.2, Laboratory Method for percent in direct comparisons. Even though
as plate cleanliness, shielding gas composition, Measuring Fume Generation Rates and Total Select-Arc has products with reduced fume
and the melting rate of the filler metal. Fume Emission of Welding and Allied emissions, we still recommend that systems
The use of high melting rates, reactive gas Processes. This document outlines the equip- be utilized in the workplace which provide
mixtures and low melting point additives in ment and methodology for testing filler metals adequate ventilation during welding.
6
diffusible hydrogen discussion
In 1986, an AWS task group developed and lar in nature, while the T5 produced a quite Our mixing equipment blends dry ingredients
issued a specification for diffusible hydrogen globular transfer, with large droplets. Although with utmost precision and homogeneity, virtu-
determination, AWS A4.3-93, Standard Meth- the welder appeal of the T5 types was poor, ally eliminating any possibility of segregation
ods for Determination of the Diffusible Hydrogen the basic slag system yielded weld deposits of powders within the mix. Select-Arc’s tube
Content of Martensitic, Bainitic, and Ferritic extremely low in oxygen and various impuri- forming mills are designed for high speed
Steel Weld Metal Produced by Arc Welding. This ties, which produced superb CVN toughness forming and closure of the strip into a tube,
standard allowed for hydrogen determination properties. ensuring tight fit of the seam, which facilitates
by both mercury immersion and gas chro- The 1970’s brought major advancements in diameter reduction on the drawing machinery.
matography, and established a consistent and flux cored wire technology. Slag systems of T1 Tight seam formation is quite important, as it
reliable means of testing weld metal from filler electrodes were modified for higher basicity, prevents entry of lubricants or other hydrogen-
metal and process combinations. The AWS A5 improved weldability and enhanced mechani- bearing compounds into the core during
Committee on Filler Metals and Allied Materi- cal properties. A key breakthrough occurred drawing and sizing of the wire. The baking
als then established optional designators, to in 1972, when development of higher melting operation rids the surface of any residual draw-
be attached to electrode classifications, stating point T1 slags produced the first all position, ing compounds and renders the wire with
the maximum diffusible hydrogen levels of a flux cored electrodes. This capability allowed, just enough surface oxide to impart corrosion
filler metal or process. These designators are for the first time, the use of flux cored wires in resistance. This manufacturing technology
H2, H4, H8 and H16, representing diffusible applications such as shipbuilding, water tower doesn’t stand alone; our staff of development
hydrogen limits expressed in ml/100 g of construction, pressure vessel fabrication and engineers have the metallurgical education
deposited metal. It should be noted that general fabrication requiring welding in all and formulation experience to construct slag
1 ml/100 g is roughly equivalent to 1 ppm. positions. At this point, however, the me- and alloy systems to suit any customer’s needs.
Unfortunately, the definition of “low chanical properties of these products were This combination of expertise leads to the
hydrogen” electrodes or processes is still quite still not on a par with T5 or EXX18 electrodes. finest line of flux cored and metal cored
nebulous. Even the lowest diffusible hydrogen In the late 1970’s, a major development in electrodes in today’s welding industry.
levels can cause delayed cracking when higher slag technology and metallurgy resulted in a Select-Arc’s all position electrodes, such
strength steels, lack of preheat and poor weld- quantum leap with respect to CVN toughness as Select 720HP, 721, 727, and 737, are
ing procedures are employed in combination. values. This breakthrough was a combination of formulated with microalloying and more slag
Certain approval agencies have historically microalloying and increased slag basicity of the basicity not seen before in E71T-1 products.
considered anything meeting H16 to be low T1 electrodes. Suddenly low temperature CVN Not only are the mechanical properties in
hydrogen, while the U.S. Navy has mandated impact values rivaling those of low hydrogen the same realm as those of EXX18 electrodes,
a maximum of 5.0 ml/100 g for low hydrogen covered electrodes were achievable, along but the diffusible hydrogen levels are among
applications. In general, most fabricators will with the capability of welding in all positions. the lowest in this classification of flux cored
accept H8 for carbon and ordinary strength Congruently, low alloy electrodes were electrodes. These products combine supe-
steels; welding of higher strength and low alloy developed for welding chrome-moly, low rior welder appeal and performance with
steels normally calls for H4 at the upper strength temperature nickel-bearing and high strength, outstanding CVN toughness and low diffusible
levels and H8 at the lower strength levels. low alloy steels. Flux cored wire use in the hydrogen levels, making them leaders in the
Select-Arc employs state of the art manu- marketplace began to greatly expand and its industry.
facturing equipment and techniques which, market share started to grow dramatically. Select-Arc has an equally impressive line
coupled with formulation technology, enable An entirely new type of tubular wire entered of metal cored electrodes. Select 70C-6LS
our line of small diameter (1/16” and smaller) the marketplace in 1980, metal cored elec- produces a weld bead with superb bead
and all position electrodes to easily meet the H8 trodes. These products contained only metallic geometry and virtually no slag islands on
category. Certain products can be processed ingredients in the core and, hence, acted more the surface. Tie in and bead shape are excep-
to comply with the H4 requirements. All of like solid wires in performance characteris- tional; mechanical properties easily conform
our metal cored products conform to H4 on a tics, e.g. less fume emission, no slag residue to AWS A5.18. Our line of metal cored,
routine basis. Please consult with Select-Arc’s to clean and no spatter or smoke residue to ferritic, stainless steel electrodes is among the
technical specialists for specific information remove from the weld area. In addition, metal best performing and dominant in the market-
on the diffusible hydrogen capabilities of cored wires exhibited many advantages over place. As with our flux cored products, the
individual electrodes. solid wires, such as increased width of pen- Select-Arc metal cored line offers a complete
etration, the ability to bridge gaps and poor fit selection of low alloy electrodes for welding
Welding and up areas, less spatter with the “lean” blends of nearly every grade of low alloy or high strength
Product Metallurgy argon/carbon dioxide and faster travel speeds. steels.
These products gained popularity very quickly
The first flux cored wires were made with a and rapidly became a large portion of the The list of specialty products
rutile-based slag system. These slag systems
tubular electrodes sold in the industry. By the
we manufacture is endless.
were highly acidic and produced relatively
late 1980’s, metal cored wires were classified
high oxygen levels in the weld metal. Welding
within AWS standards and were available as
performance was good but CVN toughness
carbon and low alloy steel, stainless steel and It encompasses hardfacing, thermal spray,
was marginal.
hardfacing varieties. nickel based, cast iron and 300 series stainless
The next stage of development was the
electrodes. Send in a request through our sales
Today, Select-Arc offers
introduction of the “T5” electrode, which was
department and we will be happy to tailor a
a highly basic, lime-fluoride slag system. This a complete array of tubular product to your needs.
was an attempt to duplicate the EXX18 fluxing
products which reflect the latest,
system in a flux cored electrode. There were
clearly discernable differences between the T1 and the best, manufacturing

and T5 electrodes; the T1 products exhibited a
finer droplet transfer, spray to slightly globu- technology.
7
Select-Arc Metal Cored Electrodes
Select-Arc’s complete line of metal cored wires electrodes is nearly as good as with flux the capability of metal cored electrodes to
is the answer to a problem which has existed cored electrodes. Couple this with the extra weld joints with poor fit up or with gaps, and
for years - how to combine the efficiencies deoxidizers which can be added to the core experience minimal problems with burn
of solid (GMAW) electrodes with the high ingredients and metal cored electrodes of- through or arc outages. The same phenome-
productivity rates of flux cored (FCAW) fer a further advantage of welding over hot non, utilization of current density (attributable
electrodes. Metal cored wires offer all the rolled material or descaled carbon steels with to the tubular nature of the wire), accounts for
advantages of solid wire; low fume generation practically no subsurface porosity or defects all these technical advantages.
rates, high efficiencies and no slag to remove of any kind. Solid wire is quite susceptible to The biggest advantage of all, which metal
or clean-up. Because of their unique tubular subsurface defects, particularly on heavy plate cored offers over solid electrodes, is the most
design, metal cored wires offer additional sections. One attribute often overlooked is cost effective — productivity! For a given
benefits such as improved sidewall fusion and fillet size, solid wire exhibits a deep, narrow
reduction in “cold lap” which are common penetration nugget which not only increases
weld defects found in GMAW with solid wire. the risk of cold lap but uses more weld metal
Additional benefits include; the ability to than necessary to fill the joint. Metal cored
achieve pure spray transfer using 75%-80% wire, with a wider, shallower penetration
argon/balance carbon dioxide shielding gas pattern, uses less weld metal than solid wire
and faster travel speeds for a given fillet size. for the same size fillet. If deposition rates are
Select-Arc’s offering of metal cored wires equal, and metal cored wire is usually higher,
ranks at the top in quality and performance.
New technology in manufacturing equipment
provides the ultimate in consistency of fill,
diameter control and surface finish. These
electrodes provide a smooth spray transfer,
negligible spatter and a flat bead profile with
virtually no slag islands. Minimal spatter and
the absence of slag provide extremely high
deposition efficiencies, 95-98%, resulting in
high deposition rates and subsequently lower
welding costs.
The tubular construction of metal cored
electrodes is the cornerstone of reasons which
account for the many advantages this product
offers over solid, and in some instances, flux
cored electrodes. Even though the fill ingre-
dients are virtually all metallics, the core does
not carry very much of the current. Nearly all
the electrical current travels through the strip
or the “tube”. This creates a wider, slightly
shallower path of penetration than solid wire
which enhances fusion into the sidewalls and
eliminates a condition known as “cold lap”.
In fact, the side wall fusion with metal cored
the metal cored product will make more length
of fillet per unit time than the solid electrode.
Welding speeds up to 50% faster are achiev-
able with metal cored electrodes, depending
on the application. This certainly translates
into big savings in welding costs due to the
increased productivity.
Metal cored electrodes are equally advan-
tageous in the world of high strength, low
alloy steels or steels requiring good impact
toughness at low temperatures. Adding
alloys to the core is quite simple and makes
possible the manufacture of small quantities;
something not feasible with solid wires. Metal
cored, low alloy composite wires also offer
more consistency and homogeneity of product
than solid electrodes. Lastly, there is so much
flexibility when choosing low alloy, metal cored
electrodes; a complete line of standard alloy
types are available, and, in addition, special
analyses products can be easily formulated.
8
GAS-ShIELdEd TUbULAr
Flat & horizontal,
Flux Cored
EC
LA 70CrP 70Tr
Select Select
C
E A
r r
CLASSIFICATION: E70T-1C per AWS A5.20, CLASSIFICATIONS: E70T-1C, E70T-1M, b
Cb ASME SFA 5.20 E70T-9C, E70T-9M per AWS A5.20, ASME O
N
SFA 5.20
T APPrOVAL: ABS 2YSA (100% CO2) ST
O APPrOVALS: CWB E492T-9, 9M-H8 E
Select 70CRP is a flux cored, carbon
(CO/C25), ABS 2YSA (CO), 3/32" dia. – E
r 2 2
steel electrode designed for the welding AWS 1.8 (seismic) – approved CO/C25 L
N 2
of structural plate with surface
O Select 70TR is intended for the single
contaminants, such as rust and primer.
and multiple pass welding of carbon
S APPLICATIONS: Select 70CRP is an ideal and certain low alloy steels in the flat
d
T wire for welding automatic or semi-automatic and horizontal fillet positions. This LO
fillet welds on ship panels, barges, or any E70T-1 electrode has a unique slag W
EE pprlaetvee nthtaatti vhea sp briemene rc oora tneodn w-ciotha treuds tp late system which allows multiple weld AL
S that has rusted. beads to be stacked in a horizontal fillet L
E with a minimum of “roll” or convexity. O
y
dIAMETErS: 1/16", 3/32"
APPLICATIONS: The bead geometry of
L ShIELdING GAS: 100% CO2, 40-55 cfh Select 70TR is much flatter, with minimal
roll, or better tie-in, at the toe of the fillet.
WELdING POSITIONS:
Flat and Horizontal Also, it is much easier to “stack” weld beads S
T
with Select 70TR when building up large
A
horizontal fillets.The welding of structural I
N
carbon steels, where high deposition rates L
and superior penetration characteristics are E
S
ChArACTErISTICS: preferred, is well suited for Select 70TR. It S
• Welds over plates coated with rust is an ideal choice for welding steels such as S
or weldable primers with minimal A36, A285, A515 and A516. T
E
surface defects. E
dIAMETErS: .045", 1/16", 5/64", 3/32"
• Smooth arc with minimal spatter and L
easy slag removal. ShIELdING GASES: 100% CO, 75-80%
2
• Slightly convex bead profile. Ar/balance CO, 40-55 cfh
2
N
TyPICAL MEChANICAL PrOPErTIES: WELdING POSITIONS: I
C
CO Flat and Horizontal
2 k
Ultimate Tensile Strength (psi) 76,500 E
Yield Strength (psi) 65,900 L
Percent Elongation 29 A
L
CVN (ft•lb ƒ) @ 0˚F 50 L
ChArACTErISTICS: O
TyPICAL dEPOSIT COMPOSITION: • Superior bead geometry delivers flat profile y
Wt% C Mn P S Si Ni and minimizes “double beading”. S
CO .05 1.14 0.10 .006 .50 .37 • Extremely high welder appeal.
2
• Low spatter and easily removed slag.
• High deoxidation level facilitates welding h
A
over mill scale and rust.
r
d
TyPICAL MEChANICAL PrOPErTIES: S
75%Ar/ U
r
CO 25%CO
2 2 F
Ultimate Tensile A
Strength (psi) 88,700 94,100 C
I
Yield Strength (psi) 74,400 81,100 N
Percent Elongation 24 24 G
CVN (ft•lb ƒ) @ -20˚F 31 30
TyPICAL dEPOSIT COMPOSITION:
Wt% C Mn P S Si
CO .06 1.56 .006 .010 .58
2
www.select-arc.com 75Ar/25CO .06 1.68 .007 .009 .70
2
9
GAS-ShIELdEd TUbULAr
Flat & horizontal,
Flux Cored
71 71A 71P
Select Select Select
L
E
E
T CLASSIFICATIONS: E70T-1C, E70T-9C CLASSIFICATIONS: E70T-1C, E70T-9C CLASSIFICATIONS: E70T-1C, E70T-1M
S
per AWS A5.20, ASME SFA 5.20 per AWS A5.20, ASME SFA 5.20 per AWS A5.20, ASME SFA 5.20, MIL 70T-
N
O 1C per MIL-E-24403/1
b APPrOVALS: ABS E70T-1C, Select 71A is a carbon steel, flux cored
r CWB E492T-9-H8 (CO2) electrode designed for the single and mul- APPrOVALS: ABS 3YSA (92% Ar - 8%
A CO), MIL 70T-1C per MIL-E-24403/1
C Select 71 is a carbon steel, flux cored tiple pass welding of carbon and certain 2
electrode designed for the single and low alloy steels in the flat and horizontal Select 71P is a gas-shielded, flux cored
multiple pass welding of carbon and positions. It provides smooth performance electrode intended to weld over primers
certain low alloy steels in the flat and with superior bead shape and slag peeling used in the shipbuilding industry. This
horizontal passes. electrode is multiple pass, for use in
y APPLICATIONS: Select 71A is a general
O purpose electrode with extremely high the flat position and horizontal fillets.
L APPLICATIONS: The high level of deoxida- welder appeal. It has a stable arc, with low The preferred shielding gas is carbon
L tion in Select 71 facilitates welding over mill
A spatter, over a broad current range. This dioxide, but mixtures up to 92% argon -
scale, rust and other contaminants. This makes
W wire has excellent wetting characteristics, 8% carbon dioxide may be used.
Select 71 ideal for those applications involving
O resulting in superior bead shape and the slag
the welding of structural carbon steels, where
L is typically self peeling. Select 71A is an ideal APPLICATIONS: Select 71P is specially
high deposition rates and superior penetration
choice for welding plates such as ASTM A36, designed to weld over zinc-based and
characteristics are preferred. This electrode is
A285, A515 and A516 commonly found in organic primers in the shipbuilding industry.
utilized for welding steels such as A36, A285,
earthmoving equipment, mining machinery, The slag system and deoxidizers provide
A515 and A516.
L structural steel and railcar fabrication. excellent resistance to the pitting which
E dIAMETErS: .045", .052", 1/16", 5/64", occurs when welding over primers used
TE 3/32", 7/64", 1/8" dIAMETErS: 1/16", 5/64", 3/32", 7/64", 1/8" in shipbuilding, barge construction and
S offshore drilling platform fabrication. This
S ShIELdING GAS: 100% CO2, 40-55 cfh ShIELdING GAS: 100% CO2, 40-55 cfh electrode offers good welding performance,
ES WELdING POSITIONS: WELdING POSITIONS: along with ease of slag removal and low
L Flat and Horizontal spatter.
Flat and Horizontal
N
AI dIAMETErS: .045", .052", 1/16"
T
S ShIELdING GASES: 100% CO,
2
92% Ar/8% CO, 40-55 cfh
ChArACTErISTICS: 2
ChArACTErISTICS:
• High level of oxidation facilitates welding • High level of oxidation facilitates welding WELdING POSITIONS:
S
y over mill scale, rust and other contaminants. over mill scale, rust and other contaminants. Flat and Horizontal
O • Extremely smooth welding arc over a broad
• Smooth welding arc over a broad range of
L range of amperage and voltage.
L amperage and voltage.
A • Quite low spatter.
• Low spatter.

L • Slag removes very easily.
E
k TyPICAL MEChANICAL PrOPErTIES: TyPICAL MEChANICAL PrOPErTIES: ChArACTErISTICS:
C CO2 CO • Porosity-free welds possible on primer
NI Ultimate Tensile Strength (psi) 88,600 Ultimate Tensile Strength (psi) 88,0002 coated steels.
Yield Strength (psi) 73,000 • Smooth arc transfer with low spatter.
Yield Strength (psi) 74,000
Percent Elongation 24 • Good mechanical properties.
Percent Elongation 23
CVN (ft•lb ƒ) @ 0˚F 34 • Easy slag removal.
G CVN (ft•lb f) @ 0˚F 32
@ -20˚F 29
N @ -20˚F 21 TyPICAL MEChANICAL PrOPErTIES:
I
C TyPICAL dEPOSIT COMPOSITION: 92%Ar/
A Wt% C Mn P S Si TyPICAL dEPOSIT COMPOSITION: CO 8%CO
F Wt% C Mn P S Si 2 2
r CO .06 1.56 .006 .010 .58 Ultimate Tensile
U 2 CO2 .06 1.28 .008 .011 .54 Strength (psi) 86,700 89,100
S
d Yield Strength (psi) 73,400 76,300
r Percent Elongation 22 23
A CVN (ft•lb ƒ) @ 0˚F 53 52
h
TyPICAL dEPOSIT COMPOSITION:
Wt% C Mn P S Si
CO .04 1.40 .008 .007 .49
2
92Ar/8CO .04 1.58 .008 .007 .75
2
10