Table Of Content

इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 280 (2006): Mild Steel Wire for General Engineering Purposes [MTD 4: Wrought Steel Products] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 280:2006 Indian Standard MILD STEEL WIRE FOR GENERAL ENGINEERING PURPOSES (Fourth Revision) ICS77.140.65 ,., ” 0 BIS 2006 BUREAU OF INDIAN ST AN DA RD-S MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MA”RG NEW DELHI 110002 March2006 PriceGroup 2 Wrought Steel Products Sectional Committee, MTD 4 FOREWORD ThisIndian Standard (Fourth Revision) wasadopted bytheBureauofIndian Standards, afterthedraft finalized bythe Wrought SteelProducts Sectional Committee hadbeen approved bythe Metallurgical Engineering Division Council. This standard was first published in 1951and revised in 1962, 1972and 1978. Inthisrevision, following changes have been made: a) All the three Amendments issued have been incorporated. b) Clause on reference of Indian Standard hasbeen modified. Forallthetestsspecified inthestandard (chemical/physical /others),themethod asspecified inrelevant 1S0 standard may alsobe followed asan alternate method. Forthepurpose ofdeciding whether aparticular requirement ofthisstandard iscomplied withthefinalvalue,observed orcalculated, expressing the result ofatestoranalysis, shallberounded off inaccordance with IS2:1960 ‘Rulesfor rounding offnumerical values (revised”’. Thenumber ofsignificantplaces retained inthe.rounded ofivalue shouldbe the same asthat ofthe specified value inthis standard. ,., IS 280:2006 Indian Standard MILD STEEL WIRE FOR GENERAL ENGINEERING PURPOSES (Fourth Revision) 1 SCOPE 6 CHEMICAL COMPOSITION This standard covers therequirements formild steelwire The chemical analysis of the material when carried out of sizes 0.125 mm to 12.5 mm diameter for general either by the method specified in the relevant parts of engineering purposes. IS 228 or any other established instrumental/chemical method shall be as given in 1S7887. In case of dispute, 2 REFERENCES theprocedure given inIS228 and itsrelevant parts shall The standards listed below contain provisions, which bethereferee method. However,wherethemethod isnot through reference inthistext constitute provisions ofthis given in IS 228 or its relevant parts, the referee method standard. Atthe-timeofpublication, theeditions indicated shall be as agreed to between the purchaser and the werevalid.Allstandardsaresubjecttorevisionandparties manufacturer. to agreements based on this standard are encouraged to investigate the possibility of applying the most recent 7 SIZES editions ofthestandards indicated below: 7.1 Mildsteelwireforgeneralengineering purposes shall IS No. TWe beofthe following diameters: 228 (AHparts) Methods forchemical analysisofsteels mm mm mm mm mm 1387:1993 General requirements forthesupplyof 0.125 0.315 0.80 2.60 5.00 metallurgical materials (second revision) 0.140 0.355 0.90 2.24 5.60 1608:2005 Metallic materials — Tensiletesting at 0.160 0.400 1.00 2.50 6.30 ambient temperature (third revision) 0.180 0.450 1.12 2.80 7.10 1755:1983 Method for wrapping test for metallic 0.200 0.500 1.25 3.15 8.00 wire @Wevision) 0.224 0.560 1.40 3.55 9.00 1956(Part 5): Glossary of terms relating to iron and 0.250 0.630 1.60 4.00 10.00 1975 steel: Part 5 B right steel bar and steel wire 0.280 0.710 1.80 4.50 11.2 12.5 4826:1979 Hot-dipped galvanized coatings on round steel wires #7rstrevision) 7.2 Sizes other than those mentioned above shall be 4905:1968 Methods forrandom sampling supplied subject to agreement between thepurchaser and 7887:1992 Mild steel wire rods for general the manufacturer. engineering purposes ~rst revision) 8 TOLERANCES 12753:1989 Electro galvanized coatings on round steelwire Tolerances permitted on the diameter ofwire shall be as given inTable 1. 3 TERMINOLOGY For the purpose of this standard, the definitions given in 9 MECHANICAL PROPERTIES IS 1956(Part 5) shall apply. 9.1 TensileTest 4~SUPPLY OF “MATERIAL The tensile strength of wire when tested in accordance General requirements relating tothe supply ofmild steel with IS 1608 shallbe within the limitsgiven inTable2. wire shallbe aslaid down inIS 1387. 5 MANUFACTURE 9.2 Wrapping Test The wire shall be drawn from the wire rods conforming Wire smaller than 5 mm diameter shall-besubjected to to IS7887. wrapping.test inaccordance with !S 1755. Thewireshall 1 IS 280:2006 Table 1 Tolerances on Diameter ofWire a) Annealed; (Chmse-8) b) Annealed, cleaned and limed; c) Bright drawn; All dimensionsinmillimetres. d) Dullgrey (dry drawn); SizeofWire Tolerance MaximumDifference e) Galvanized; BetweenTwo Readings f) Coppered; Taken onAnyTwo g) Tinned; and Diameters onthe Cross-Section h) Coated anddrawn(coatingmay-beoftin,copper (I) (2) (3) orzinc). All finishesotherthan galvanized: 11 COATINGTEST ‘UPto0.25 i 0.01 0.01 11.1 The galvanized coating of steel wire shall conform Over0.25 upto0.50 l0.015 0.015 to the requirements for any one of the types of coatings OVer0.50 upto1.00 +.0.02 0.02 giveninIS4826 asperagreement withthepurchaser.The over 1.00upto1.50 * 0.03 0.03 coating requirements of electro galvanized wires shall Over 1.50upto2.50 * 0.04 0.04 conform to the requirements for-any one of the types Over2.50upto5.00 * 0.05 0.05 coating given inM 12753 or as agreed to between the Over5.0 l 0.06 0,06 purchaser andthemanufacturer. Galvanized:All sizes +2.5 percentwith 2.5percentwith aminimumof aminimumof 11.2 The coating test for finishes other than galvanized, &0,025 0.025 copper coated or tinned shall be subject to agreement between thepurchaser andthemanufacturer. 12 SAMPLING Table2TensileProperties (C/azfse9.1) Unless otherwise agreed to, the method of drawing representative samples ofthematerial andthecriteria for Condition TensileStrength conformity shallbe asprescribed inAnnex A. / FinishesOtherThan Galvanized 13 FREEDOM FROM DEFECTS Galvanized MPa MPa All finished wires shall be well and cleanly drawntothe (1) (2) (3) dimensions specified. Thewireshallbesound,freeflom splits, surface flaws, rough jagged and imperfect edges Annealed 500Max 300-550 and other harmful surface defects. Softdrawn 550 Max . %hard 450-6 5 0 — 14 PACKING 1/2hard 600-800 — Each coil of wire shall be suitably bound and fastened Hard 700-950 550-900 compactly. If required by the purchaser, each coil shall beprotected by suitable wrapping. NOTES 1 1MPa = lN/mm2= IMN/m2 = 0.1020 kgf/mm2. 2 Restrictedrangesoftensilestrengthincaseofgalvanizedwiremay 15 MARKING beagreedtoatthetimeofenquiryandorder. 15.1 Each coil of wire shall be marked legibly with the withstandwithoutbreakingorsplittingbeingwrappec~ight finish,sizeofwire,lotnumber andtrade-mark orthename times round its own diameter and subsequently ofthe manufacturer. straightened. 15.2 BISCertification Marking 9.3 Bend Test Thematerial mayalsobemarked withtheStandardMark. Wire of 5 mm diameter and over shall be subjected to bendtest.‘Thewireshallwithstand beingbentthrough an 15.2.1 The use of standard mark is governed by the angleof90°round aformer ofdiameter equaltotwice its provisions of the Bureau oflndian Standards Act, 1986 owndiameter without breaking or splitting. and the Rules and Regulations made thereunder. The details of conditions under which the Iicence forthe use 10 -FINISH oftheStandard Markmaybe granted tomanufacturers or The wire shall have one of the following finishes as producers may be obtained from the Bureau of Indian specified bythepurchaser: Standards. 9 IS 280:2006 ANNEX A (Clause 12) SAMPLING AND CRITERIA FOR CONFORMITY . A-1 LOT A-3 PREPARATION OFSAMPLES ANDNUMBER OF TESTS A-1.l In any consignment, all the coils of wire of the samegradeanddiameter, manufactured under essentially A-3.1 Testsfor Physical Requirements similar conditions of manufacture, shall be grouped From the coils selectedfrom col 2 of Table 3, adequate togethertoconstitute alot. lengthoftestpieceshallbecutfromeachendandsubjected to physical tests, namely, size, surface condition, tensile, A-1.l.l Samples shallbetaken from each lotandtested bend, wrapping and coating tests. Atest piece failing to forccmformitytothe standard. meet any ofthe requirements shall be called adefective. If thenumber ofdefective found islessthanorequal to A-2 SAMPLING thepermissible number ofdefective specified inCOI3of Table3,thelotshallbe considered to haveconformed to A-2.1 Thenumber ofcoilstobetaken fromalotshallbe physical requirements. according toCOI2and4of Table 3.These coilsshallbe chosen at random (see IS 4905). Samples shall be cut A-3.2 Testsfor Chemical Requirements from each coil so chosen as per A-3.1 and A-3.2 for Unless otherwise agreed, the following procedure shall physical andchemical requirements. be followed for chemical requirements: Fromthosetestpieceswhichhaveconformedtophysical Table3 Scale of Sampling and Permissible Number requirements, further test pieces shall be selected at of Defective random according to COI4 of Table 3. These samples (Clauses A-2.1, A-3.1 and A-3.2) shall be tested for all the chemical requirements. If a test piece fails to meet the respective chemical No.ofCoils No. ofCoils Permissible No.ofCoils requirements, itshallbecalledadefective. Thelot.shall inaLot forPhydcal Defective forChemical be considered to have conformed to the chemical Requirements Requirements (1) (2) (3) (4) requirements, ifallthe individualtest pieces tested for chemical requirements pass thetest. upto25 2 0 1 26-50 3 0 1 A-4 CRITERIA FOR CONFORMITY 51-150 5 0 2 A lot shall be considered to have conformed to the 151-300 8 I 2 requirements ofthe specification, ifA-3.1 and A-3.2 are 301 andabove 13 1 2 satisfied. Bureau of Indian Standards BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote . harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matiers inthe country. Copyright BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed tothe Director (Publications), BIS. Review of Indian Standards’ Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed periodically; a standard along with amendments isreaffirmed when such review indicates that no changes are needed; if the review indicates that changes are needed, it istaken up for revision. Users of Indian Standards should ascertain that they are inpossession ofthe latest amendments oredition byreferring tothe latest issue of ‘BIS Catalogue’ and :St&dards-: Monthly Additions’. This Indian Standard has been developed from Doc :No. MTD 4 (4432). Amendments Issued Since Publication Amend No. Date of Issue Text Affected BUREAU OFINDIAN STANDARDS Headquarters : Manak Bhavan, 9Bahadur ShahZ a far Marg, New Delhi 110002 Telegrams :Manaksrmstha Telephones :23230131,23233375,2323 9402 (Common to allofiices) Regional Offices : Telephone Central : Manak Bhavan, 9Bahadur Shah Zafar Marg 2323.7617 NEW DELHI 110002 { 23233841 ‘Eastern : 1/14C.I.T. Scheme VII M, V.I.P.Road, Kankurgachi 23378499,23378561 KOLKATA 700054 { 23378626,23379120 Northern : SCO 335-336, Sector 34-A, CHANDIGARH 160022 2603843 {2609285 Southern : C.I.T. Campus, IVCross Road, CHENNAI 600113 22541216,22541442 { 225425 1“9,22542315 Western :Manakalaya, E9 MIDC, Marol, Andheri (East) 28329295,28327858 MUMBAI 400093 { 28327891,28327892 Branches : AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE. FARIDABAD. GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR. LUCKNOW. ‘NAGPUR. NALAGARH. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM. VISAKHAPATNAM. Pmted atRabhat Offset Press, New Delhi-2