Select-Arc Premium Welding Products - Core Metal

100 Pages·2011·6.4 MB·English

FULL LINE CATALOG
Select-Arc Premium Welding Products
The Standard of Excellence in Tubular Welding Electrodes
SELECT
ARC
INC. ®
TABLE OF CONTENTS
INTRODUCTION
Technical Background and Manufacture .........4
Product Development ....................................5
Quality ...........................................................5
Productivity ..................................................5
Process Economics .........................................6
Fume Generation Rate Discussion ..................6
Diffusible Hydrogen Discussion .....................7
Welding and Product Metallurgy ....................7
Select-Arc Metal Cored Electrodes ..................8
CARBON STEEL ELECTRODES
GAS-SHIELDED TUBULAR
Thank you for your interest in Select-Arc, Inc. Flat and Horizontal, Flux Cored
Select 70TR ...............................................9
We are proud to offer the true standard of
Select Super 70 .........................................9
excellence in tubular welding electrodes, Select 71 ..................................................10
Select 71A ................................................10
utilizing the latest in manufacturing equipment Select 71P ...............................................10
and technology. Select 72 .................................................11
Select Super 72 .......................................11
Select 75 .................................................11
Select 97 .................................................12
Our commitment is to set the industry standard
All Position, Flux Cored
by providing the highest quality products,
Encore .....................................................12
the best service and most value-added to our Select 71 Supreme ...................................12
Select 710 ...............................................13
customers. To accomplish this, we have Select 711 ................................................13
employed a team of what we believe to be Select 712 ...............................................13
Select 717 ...............................................14
the most qualified people to design, manufacture and support our Select 720 ...............................................14
Select 720A .............................................14
superior quality products. In fact, the quality and performance of our
Select 720HP ..........................................15
products are a direct result of the skill and experience of our employees. Select 721 ...............................................15
Select 727 ...............................................15
Our unprecedented growth and success are attributed to customers’
Select 737 ................................................16
recognition of the service, response and quality that we provide. The Metal Cored
knowledge and experience of Select-Arc’s team will continue to ensure Select 70C-3 ............................................16
Endurance ...............................................16
the performance level of today’s products and guarantee the performance Select 70C-6 ............................................17
level of future products. Select 70C-6LS ........................................17
Select 70C-7 ............................................17
Select 70C-8 ............................................18
Select 70C-10 ..........................................18
Select-Arc offers a complete line of tubular welding electrodes, of excep-
Select 70C-T ............................................18
tional quality, to fulfill customer needs and requirements. Our rigorous
SUBMERGED ARC
engineering and manufacturing standards ensure maximum quality in
Select EH12K-S .......................................19
feedability, weldability and weld performance. You have my word on this. Select EM12K-S .......................................19
Select EM13K-S .......................................19
Select EM14K-S .......................................19
We believe that we offer the best available quality, service and value in
FLUX CORED SELF-SHIELDED
the industry. Try the Select line of tubular electrodes and experience for
Flat and Horizontal
yourself why Select-Arc is, and will continue to be, The Standard Of Select 73 ..................................................19
Select 73R ................................................20
Excellence In Tubular Welding Electrodes.
Select 74 ..................................................20
All Position
Select 701 ................................................20
Select 700GS ...........................................21
SOLID WIRE
Copper-Coated Wire
Select 70S-3 .............................................21
Select 70S-6 .............................................21
Copper-Free Wire
SELECT
Select 70S-3NC ........................................22
Select 70S-6NC ........................................22
ARC
INC.®
LOW ALLOY ELECTRODES CHROMIUM-MOLYBDENUM DUPLEX
BEARING
All Position, Flux Cored
NICKEL BEARING
Flat and Horizontal, Flux Cored SelectAlloy 2209-AP ................................64
Flat and Horizontal, Flux Cored Select 81-B2 .............................................37 SelectAlloy 2553-AP ................................64
Select 81-Ni1 ...........................................23 Select 85-B2 .............................................37
Metal Cored
Select 81-Ni2 ...........................................23 Select 85-B2L ...........................................38
Select 85-Ni3 ...........................................24 Select 91-B3 .............................................38 SelectAlloy 2209-C ..................................64
All Position, Flux Cored All Position, Flux Cored MARTENSITIC
Select 810-B2 ...........................................38
Select 737-Ni ...........................................24 Flat and Horizontal, Flux Cored
Select 810-B2L .........................................39
Select 810-Ni1 .........................................24 Select 910-B3 ...........................................39 Select 410 ................................................65
Select 820-Ni1 .........................................25 Select 910-B3L .........................................39 Select 410NiMo .......................................65
Select 810-Ni2 .........................................25 Select 810-B6 ...........................................40 All Position, Flux Cored
Select 820-Ni2 .........................................25 Select 810-B8 ...........................................40
Select 910-Ni2 .........................................26 Select 910-B9 ...........................................40 Select 410-AP ..........................................65
Select 937-Ni ...........................................26 Select 410NiMo-AP .................................66
Metal Cored
Metal Cored Select 80C-B2 ..........................................41 Metal Cored
Select 80C-Ni1 ........................................26 Select 90C-B3 ..........................................41 Select 410-C ............................................66
Select 80C-Ni1LS .....................................27 Select 90C-B9 ..........................................41 Select 410NiMo-C ...................................66
Select 80C-Ni2 ........................................27
WEATHERING STEEL FERRITIC
Submerged Arc
All Position, Flux Cored Metal Cored
Select Ni1S ..............................................27
Select 810-W ...........................................42 Select 409Cb ...........................................67
Select Ni2S ..............................................28
Select 409Ti .............................................67
Select Ni3S ..............................................28 Metal Cored
Select 439Ti .............................................67
Select 80C-W ...........................................42
NICKEL-MOLYBDENUM Select 18CrCb-C ......................................68
BEARING Low Alloy Properties Summary Tables....44-47 Select 430L-Cb ........................................68
Select 430NbL .........................................68
Flat and Horizontal, Flux Cored STAINLESS STEEL
Select 91-K2 ............................................28 ELECTRODES
NICKEL ALLOY ELECTRODES
Select 95-K2 ............................................29
Technology...................................................48
Select 100-K3 ..........................................29 Introduction .................................................70
Quality .........................................................48
Select 110-K3 ..........................................29 Productivity .................................................49 Metallurgy of Nickel and Nickel Alloys ........70
Select 115-K3 ..........................................30 Metallurgy ....................................................49 General Weldability Considerations .............70
Select-Arc Nickel Cored Electrodes ..............71
All Position, Flux Cored AUSTENITIC
Select 812-K2 ..........................................30 All Position, Flux Cored
Select 910-K2 ..........................................30 Flat and Horizontal, Flux Cored SelectAlloy 82-AP ....................................71
SelectAlloy 308L ......................................50
Select 920-K2 ..........................................31 SelectAlloy C276-AP ................................71
SelectAlloy 308L CRYO ...........................50
Select 101-K3C, K3M ..............................31 SelectAlloy 622-AP ..................................72
SelectAlloy 309L ......................................50
Select 111-K3C, K3M ..............................31 SelectAlloy 312 ........................................51 SelectAlloy 625-AP ..................................72
Select 101 SR ...........................................32 SelectAlloy 316L ......................................51 Metal Cored
Metal Cored SelectAlloy 316L CRYO ...........................51 SelectAlloy 625-C ....................................72
Select 90C-M2 .........................................32 SelectAlloy 317L ......................................52 SelectAlloy 2216-C ..................................73
SelectAlloy 347 ........................................52
Select 100C .............................................32
All Position, Flux Cored
Select 100C-K3 ........................................33 HARDSURFACING
SelectAlloy 16-8-2-AP ..............................52
Select 120C .............................................33 SelectAlloy 307-AP ..................................53 ELECTRODES
SelectAlloy 308H-AP ...............................53
NICKEL-CHROMIUM- Select-Arc Hardsurfacing Products .........74-75
SelectAlloy 308L-AP ................................53
MOLYBDENUM BEARING SelectAlloy 308L-AP CRYO ......................54 Build-Up and Joining Wires
Flat and Horizontal, Flux Cored SelectAlloy 309H-AP ...............................54 SelectWear BU .........................................76
Select 115-K4 ..........................................33 SelectAlloy 309L-AP ................................54 SelectWear MN ........................................76
Select 125-K4 ..........................................34 SelectAlloy 309LCb-AP ............................55 SelectWear GP .........................................76
SelectAlloy 309LMo-AP ...........................55
Select 4130LN .........................................34 SelectAlloy 312-AP ..................................55 Metal-to-Metal Wear
Metal Cored SelectAlloy 316H-AP ...............................56 SelectWear 42 ..........................................77
Select 110C-M2 .......................................34 SelectAlloy 316L-AP ................................56 SelectWear 52W ......................................77
Select 110C-K4 ........................................35 SelectAlloy 316L-AP CRYO ......................56 SelectWear 420 ........................................77
SelectAlloy 317L-AP ................................57 SelectWear 423 ........................................78
MOLYBDENUM-MANGANESE SelectAlloy 347-AP ..................................57
Metal-to-Earth Wear
BEARING Self-Shielded, Flux Cored
SelectWear 44 ..........................................78
SelectAlloy 307TO-3 ................................57
Flat and Horizontal, Flux Cored SelectAlloy 308LTO-3 ..............................58 SelectWear 50 ..........................................78
SelectWear 57GW ....................................79
Select 105-D2 ..........................................35 SelectAlloy 309LTO-3 ..............................58
SelectWear 58 ..........................................79
Select 91-D3 ............................................35 SelectAlloy 309TO-3 ................................58
SelectAlloy 316LTO-3 ..............................59 SelectWear 60HC .....................................79
Metal Cored SelectAlloy 347TO-3 ................................59 SelectWear 60PW ....................................80
Select 80C-D2 ..........................................36 SelectWear 63 ..........................................80
Metal Cored
SelectWear 65 ..........................................80
CARBON-MANGANESE BEARING SelectAlloy 16-8-2-C ................................59 SelectWear 600TIC ..................................81
SelectAlloy 307-C ....................................60
SelectWear Zucar .....................................81
Flat and Horizontal, Flux Cored SelectAlloy 307EU-C ...............................60
Select 80 ..................................................36 SelectAlloy 308L-C ..................................60
SelectAlloy 308LSi-C ...............................61 TECHNICAL INFORMATION
SelectAlloy 309L-C ..................................61
CARBON-MOLYBDENUM SelectAlloy 309LSi-C ...............................61 Electrode Comparability Charts .........82-86
BEARING SelectAlloy 310G-C .................................62 Hardsurfacing Electrode
Flat and Horizontal, Flux Cored SelectAlloy 312-C ....................................62 Comparability Chart .............................86
SelectAlloy 316L-C ..................................62 Welding Parameters/Deposition Rates 87-95
Select 81-A1 ............................................36
SelectAlloy 316LSi-C ...............................63 Current Approvals .............................96-97
All Position, Flux Cored SelectAlloy 317L-C ..................................63 Measurement Conversion Table ...............98
Select 810-A1 ..........................................37 SelectAlloy 347-C ....................................63 Select-Arc Electrode Packaging ................99
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
advances in manufacturing technology; these
N
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,
to quality is not limited to a ing gas, which generates heat (its dissociation is bridging gaps and poor fit up and controlled
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 newest all position electrodes,
strength steels, lack of preheat and poor weld- quantum leap with respect to CVN toughness such 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. Our newest, Select
our line of small diameter (1/16” and smaller) the marketplace in 1980, metal cored elec- 70C-6LS, produces a weld bead with superb
and all position electrodes to easily meet the H8 trodes. These products contained only metallic bead geometry and virtually no slag islands
category. Certain products can be processed ingredients in the core and, hence, acted more on the surface. Tie in and bead shape are
to comply with the H4 requirements. Most of like solid wires in performance characteris- exceptional; mechanical properties easily con-
our metal cored products conform to H4 on a tics, e.g. less fume emission, no slag residue form 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 70TR 70
Select Select Super
C
ER A
R
CLASSIFICATIONS: E70T-1C, E70T-1M, CLASSIFICATION: E70T-1C per AWS B
CB E70T-9C, E70T-9M per AWS A5.20, ASME A5.20, ASME SFA 5.20 O
N
SFA 5.20
Select Super 70 is designed for single S
T T
O APPROVALS: CWB E492T-9, 9M-H8 and multiple pass welding of deep E
(CO/C25) E
R 2 groove welds in the flat position, where L
N Select 70TR is intended for the single a minimal volume of slag coverage is
O and multiple pass welding of carbon desired. This electrode has a higher
and certain low alloy steels in the flat deposition efficiency than conventional
S
D and horizontal fillet positions. This E70T-1C electrodes, hence, horizontal
L
T E70T-1C electrode has a unique slag fillets will exhibit a convex bead profile. O
system which allows multiple weld W
EE beads to be stacked in a horizontal fillet APPLICATIONS: Select Super 70 is a good A
choice for deep groove weldments such as L
S with a minimum of “roll” or convexity. J-grooves, where slag removal between each L
E pass can be a problem. The high deposition O
APPLICATIONS: The bead geometry of efficiencies of this product make it ideal for Y
L Select 70TR is much flatter, with minimal welding construction machinery, earthmoving
roll, or better tie-in, at the toe of the fillet.
equipment and other applications involving
Also, it is much easier to “stack” weld beads
heavy plate welding in the flat position.
with Select 70TR when building up large S
T
horizontal fillets.The welding of structural DIAMETERS: 1/16", 5/64", 3/32" A
carbon steels, where high deposition rates I
and superior penetration characteristics are SHIELDING GAS: 100% CO2, 40-55 cfh NL
preferred, is well suited for Select 70TR. It WELDING POSITIONS: ES
is an ideal choice for welding steels such as Flat and Horizontal S
A36, A285, A515 and A516. S
T
DIAMETERS: .045", 1/16", 5/64", 3/32" E
E
L
SHIELDING GASES: 100% CO, 75-80%
2
Ar/balance CO, 40-55 cfh CHARACTERISTICS:
2
• High deposition efficiencies in the range
WELDING POSITIONS: of 88-92%. N
Flat and Horizontal • Thin slag removes easily and cleanly in a I
C
deep groove. K
• Smooth arc transfer with low spatter. E
L
TYPICAL MECHANICAL PROPERTIES: A
C• HSuApRerAioCrT bEeaRdI SgeToImCSet:r y delivers flat profile Ul timate Tensi le Strength (psi) 83,C0O002 LLO
and minimizes “double beading”. Yield Strength (psi) 72,000 Y
S
• Extremely high welder appeal. Percent Elongation 27
• Low spatter and easily removed slag. CVN (ft•lb ƒ) @ 0˚F 38
• High deoxidation level facilitates welding
over mill scale and rust. TYPICAL DEPOSIT COMPOSITION: H
Wt% C Mn P S Si A
R
TYPICAL MECHANICAL PROPERTIES:
CO .04 1.30 .010 .010 .55 D
75%Ar/ 2 S
CO 25%CO U
2 2 R
Ultimate Tensile
F
Strength (psi) 88,700 94,100 A
C
Yield Strength (psi) 74,400 81,100
I
Percent Elongation 24 24 N
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
75Ar/25CO .06 1.68 .007 .009 .70
2
www.select-arc.com
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
N 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-
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 (CO) electrode designed for the single and mul- APPROVALS: ABS 3YSA (CO and
2 2
A 92% Ar - 8% CO), MIL 70T-1C per
C Select 71 is a carbon steel, flux cored tiple pass welding of carbon and certain 2
MIL-E-24403/1
low alloy steels in the flat and horizontal
electrode designed for the single and
multiple pass welding of carbon and positions. It provides smooth performance Select 71P is a gas-shielded, flux cored
certain low alloy steels in the flat and with superior bead shape and slag peeling electrode intended to weld over primers
horizontal passes. used in the shipbuilding industry. This
Y APPLICATIONS: Select 71A is a general
electrode is multiple pass, for use in
O purpose electrode with extremely high
L APPLICATIONS: The high level of deoxida- welder appeal. It has a stable arc, with low the flat position and horizontal fillets.
L tion in Select 71 facilitates welding over mill
A spatter, over a broad current range. This The preferred shielding gas is carbon
W scale, rust and other contaminants. This makes wire has excellent wetting characteristics, dioxide, but mixtures up to 92% argon -
Select 71 ideal for those applications involving
O resulting in superior bead shape and the slag 8% carbon dioxide may be used.
the welding of structural carbon steels, where
L is typically self peeling. Select 71A is an ideal
high deposition rates and superior penetration
choice for welding plates such as ASTM A36, APPLICATIONS: Select 71P is specially
characteristics are preferred. This electrode is
A285, A515 and A516 commonly found in designed to weld over zinc-based and
utilized for welding steels such as A36, A285,
earthmoving equipment, mining machinery, organic primers in the shipbuilding industry.
A515 and A516.
L structural steel and railcar fabrication. The slag system and deoxidizers provide
E DIAMETERS: .045", .052", 1/16", 5/64", excellent resistance to the pitting which
TE 3/32", 7/64", 1/8" DIAMETERS: 1/16", 5/64", 3/32", 7/64", 1/8" occurs when welding over primers used
S S SHIELDING GAS: 100% CO2, 40-55 cfh SHIELDING GAS: 100% CO2, 40-55 cfh ionff sshhoiprbe udirldililningg, bpalartgfeo rcmon fsatbruricctaitoinon a.n Tdh is
S
E WELDING POSITIONS: WELDING POSITIONS: electrode offers good welding performance,
L Flat and Horizontal along with ease of slag removal and low
N Flat and Horizontal
spatter.
I
A
T DIAMETERS: .045", .052", 1/16"
S
CHARACTERISTICS: CHARACTERISTICS: 9S2H%IE ALrD/8I%N GC OGA, S4E0S-5: 51 0c0fh% CO2,
• High level of oxidation facilitates welding • High level of oxidation facilitates welding 2
YS over mill scale, rust and other contaminants. over mill scale, rust and other contaminants. WELDING POSITIONS:
O • Smooth welding arc over a broad range of • Extremely smooth welding arc over a broad Flat and Horizontal
L range of amperage and voltage.
L amperage and voltage.
A • Quite low spatter.
• Low spatter.
L • Slag removes very easily.
E
CK T Y PICAL ME CHANICAL PROPERTIECSO: TYPICAL MECHANICAL PROPERTIES: CHARACTERISTICS:
2 CO
NI Ultimate Tensile Strength (psi) 88,600 Ultimate Tensile Strength (psi) 88,0002 • Porosity-free welds possible on primer
Yield Strength (psi) 73,000 coated steels.
Yield Strength (psi) 74,000
Percent Elongation 24 • Smooth arc transfer with low spatter.
Percent Elongation 23
CVN (ft•lb ƒ) @ 0˚F 34 • Good mechanical properties.
G @ -20˚F 29 CVN (ft•lb f) @ 0˚F 32 • Easy slag removal.
N @ -20˚F 21
I
C TYPICAL DEPOSIT COMPOSITION: TYPICAL MECHANICAL PROPERTIES:
A Wt% C Mn P S Si TYPICAL DEPOSIT COMPOSITION: 92%Ar/
F Wt% C Mn P S Si
R CO .06 1.56 .006 .010 .58 CO 8%CO
U 2 CO .06 1.28 .008 .011 .54 Ultimate Tensile 2 2
S 2
D Strength (psi) 86,700 89,100
R Yield Strength (psi) 73,400 76,300
A Percent Elongation 22 23
H
CVN (ft•lb ƒ) @ 0˚F 53 52
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