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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 1875 (1992): Carbon steel billets, blooms, slabs and bars for forgings [MTD 16: Alloy Steels and Forgings] “!ा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” :'''2 ••1171 (Reallltmed1M) "'l(ffllf1fR~ '1",1$041 ~ ft;rQ: ~ n.~~{!, ~, CfiIa1it $OfCild ~ ~ ~ - fcrfWfisc; (qmf-rr~ ) Indian Standard CARBON STEEL BILLETS, BLOOMS, SLABSAND BARS FOR FORGINGS - SPECIFICATION ( Fifth Revision) Second ReprintAUGUST2000 UDC 669·14- 412 C> BIS 1992 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARO NEW DELHI 110002 January 1992 Price GrOll' 3 SteelForgingsSectionalCommiuee, MTD 18 FOREWORD This IndianStandard (Fifth Revision) was adopted by the Bureauof IndianStandards, after thedraftfinalized by theSteelForgings SectionalCommitteehadbeenapprovedby theMetallurgi cal EngineeriagDivisionCouncil. Thisstandard was first issued in 1961 and subsequently revised in 1966. 1970, 1971 and 1978. Based on theexperiencegained duringthese yearsin the use ofthi-s standard,it halbeen decided to further revisethisstandard. Class 1Steelisagain incorporated in thisrevision based on the need of users. Forthe benefit of the purchaser, an informativeannex ( see AnnexA )has beenincludedgivingparticularsto be specifiedwhileorderingfor these steels. This standard contains clauses 5.4(e), 5.4.1) 5.4.1, 11.1and Notein Table 2 which call for agreementbetweenthepurchaserand the supplier;clauses 5.1, 6.2 and 10.1 whichpermitthe pur chaserto use his option; and clause12givessupplementaryrequirements. For1he purposeofdecidingwhether a particular requirementof thisstandardis complied with, thefinal value,observedorcalculated, expressingthe result ofa testoranalysis, shall be rounded off in accordancewith IS 2: 1960 'Rulesfor rounding off numerical values (revised)'. The number ofsignificant placesretainedin the rounded off value should be the sameasthatofthe specifiedvalue in thisstandard. AMENDMENT NO.1 JANUARY 1993 TO IS 1875:1992 CARBON STEEL BILLETS, BLOOMS, SLABS AND BARS FOR FORGINGS SPECIFICATION (FifthRevision) (Page2,Table1,col6,againstclass lA)- Subsutute·0.04'forlO.03'. (MID18) Reproa:raphyUnit.HIS.NewDelhi,India AMENDMENT NO. 2 NOVEMBER 1994 TO IS 1875:1992 CARBONS'fEELBILLETS,BLOOMS, SLABSANDBARS FORFORGINGS-SPECIFICATION (FifthRevision) (Page 1,clause %.1 )- Substitute 'IS 1387: 1993 General requirements forthesupply ofmetallurgicalmaterials(secondrevision)'for'IS1387:1967 General requirementsforthesupplyofmetallurgicalmaterials(firstrevision)'. (Page 2,clause6.%.1, underthe heading 'Permissible Variation,Percent, Max')- Substitute'mm'for '81m2,. (MID18) RcproaraplaYUDic,BIS,NewDelhi.India IS 1875 :1992 Indian Standard CARBON STEEL BILLETS, BLOOMS, SLABS AND BARS FOR FORGINGS - SPECIFICATION ( Fifth Revision) 1 SCOPE 3 TERMINOLOGY 1.1 This standard covers the requirements for 3.1 For the purpose ofthisstandard. the defini annindebcalrasssfeosrofforcgairnbgosndsetesieglnbaitleledtsa,sblcoloamsss,1,sllaAbs, tions given in IS 1956 ( P,Ht 6 )shal) ipply. 2, 2A, 3, 3A,4, 5and 6(see Table I r, 4 SUPPLYOF MATERIAL 2 REFERENCES 4.1 General requirements relating to the supply 2.1 The following Indian Standards are neces of material shall be as laid down in saryadjunctsto this standard. IS 1387 :1967. ISNo.; Title 4.2 The steelscovered by this standard shall be 228 Methodsforchemicalanaly ordered and deliveredon the Iollowmg basis: sis of steels (revised) 1387 : ]967 General requirements for a) Chemical composition: and the supply of metallurgical b) Tensile propertiesand/or hardness. materials(first revision ) 1500 : 1983 Methodfor brinell hardness 5 MANUFACTURE test for metallic materials ( secondrevision) 5.1 Billets. blooms, slabs and bars for forgins 1599 : 1985 Method for bend test shall be manufacturedfrom killed steel made by (secondrevision) open-hearth, electric, basic oxygen, combina tion of these processes, or any other SUItable 1608 : 1972 Method for tensile testing method whichwill meet the requirements of the of steel products (first standard. The stock may be manufactured by revision) hot rolling or forging. 1762 Code for designation of ( Part 1) : 1974 steels: Part 1Based on letter 5.2 Sufficient discard shall be made from each symbols(firstrevision ) ingot to secure freedom from piplI1g and undue 1852 : 1985 Rolling and cutting tole segregation. ranees for hot rolled steel products((fourth revision) S.3 The material shall be made from ingot hav ingat least four times the cro...s-scctionalarea of 1956 Glossary of terms relating the products. (Part6) : 1976 to iron and stcel : Part 6 Forging (including drop 5.3.1 For blooms 300 X 300 rnrn and larger forgmg ) size or its equivalent cross sectional area, 3739 : 1987 Dimensional tolerances for though not meeting the requrrcment 0'- 5.3, carbon and alloy construe may aha be supplied with prior pcrnussron tional steel (first revision) from the purchaser. In case L1f reduction by 4075 : 1985 Method for macrostreak forging process prior perrnissron f~om the user flaw test for steel <first is not necessary if the reduction IS more than revision ) 2'5 : l. 4748 : 1988 Method for estimating ave 5.4 The conditioninz method should be so rage grainsize of metals chosen that it shan not have any injurious (first revision ) effects in the billet. bloom and bar. Material 9684 ; 1980 Technical conditions for required for forging may' be conditioned to the supply of hot rolled remove injurious surface defccts pvovrded that billets, blooms, slabs and the foltowmg limitations shall apply: bars for closed die forgings a) Conditioning shall be allowed only in the 10138 Macroscopic method for longitudinal direction. Conditioning in (Part3):1983 deterrninationofnon-rnetallic the transverse direction shall not be inclusioncontentin wrought allowed, except for surface inspectIon steel: Part 3Magnetic parti cle inspection method purposes. 11371 : 1985 Method for macroetch test b) The depth of conditioning shall not for wroughtsteel products exceed 1 mm for every 15 mm of the IS1875 :1992 dimension concerned subject to a maxi eitherby the methods specifiedin the relevant mum depth of20 mm. partsofIS 228 or any other established instru e) The width ofconditioning shallbe at least mental/chemical method, shall be as given in four times its greatest depth. Table 1. Incase ofany dispute, the procedure given in relevant parts of ]S 228 shall be the d) An exception ismade in the case ofslabs refereemethod. whose width is at leasttwice the thickness. The depth of conditioning in the case 6.2 Check ADalysis ofslabs shall not exceed 1mm for every 10 mm of the dimensions concerned The purchaser may specify check analysis on subject to a maximum depth of20 mrn. blooms, billets, slabs and bars. The number of e) While conditioning the material, the samples on which the analysis hasto be carried outshall be at the rate ofone sample per 100 dimensions ofthe product may go below the minimum dimensions permitted aew opfroodnuectssamopflseampeer sseeccttiioonn.subject to a minimum cording to the tolerancesspecified. When reduced amount of dressing than what 6.2.1 The permissibledeviation incheckanalysis is permitted by suchclauses(b ), ( c )and from the specified composition limits given in ( d ) is required, the extent of dressing Table 1shall be as given below: shall he mutually agreed to between the manufacturer and the purchaser. Constituent, Percent Permissible Variation, f) When required by the users for the Percent, Max material to be usedfor closed die forging, r-----..A------, the drcssnc may be allowed to suchan For Sections For Sec extent that'"its cross sectional area as tions defined by thedimensionaltolerances does 250 mrn" 250mm> to not go below the minimum ofthe tole orless 500mmt ranee limit. Carbon: 5.4.1 In special cases, particularly where it is Up to 0-25 ± 0-02 + 0-04 necessary on large material and where cond~ Over 0'25 up to and tioning is not injurious, greater depth ofcondi includingO'50 ± 0'03 ± 0'05 tioning may be permitted by specialagreement Over0'50 ± 0-04 ± 0'06 between the supplierandthe purchaser, Silicon ± 0'03 ± 0-04 ~.4.2 In other cases, conditioning ofmaterial Manganese ± 0'04 ± 0-07 for removing injuriousdefects shall be as agreed Phosphorus +0'005 +0'010 to between the purchaserand the manufacturer. Sulphur + 0'005 +0'010 6 CHEMICALCOMPOSITION 6.3 The following elementswherevernot speci 6.1 LadleAnalysis tied in Table I shall notbe added to thesteel, The ladle analysis of steel, when carried out except where agreed to, other than for the Table 1 ChemicalCo.pOSitIOD (Clauses 1.1,6.1,6.2-1,6.3 and 12_1.1) Class Desilnation Co.,tiluent,Percent [See IS1762 ~-----------------~-----------------~ (Part1):1974) Carbon Silicon Man8anese Sulphur Phosphorus Mox Maxi (I) (2) (3) (4) (S) (6) (7) 1 14C6 0°10-0-18 0'15-0'35 0-40-0-70 0-04 0-04 lA lSC8 0'10-0-20 0-IS-0'35 0'60-0-90 0·03 0'04 2 20C8 0-IS-0'25 0'15-0-35 0'60-0-90 0'04 0'04 2A 2SC8 0'20-0-30 0'15-0'35 0'60-0'90 0-04 0-04 3 30C8 0-25-0'35 0'15-0-35 0-60-0'90 0-04 0'04 3A 35C8 0-30-0-40 0-15-0-35 0'60-0'90 0'04 0-04 4 4SC8 0'40-0-50 0'15-0'35 0-60-0-90 0'04 0'04 S 5SC8 0-50-0-60 0'15-0'35 0-60-0-90 0'04 0'04 6 65C6 0-60-0'70 0-15-0'35 0"0-0'80 0-04 0'04 NOTES 1 When the steel is aluminium killed or killed ~"'ith both allminilm andsilicon, tberequirements of minimum silicon content shall not apply. Foraluminium killed steel thetotalaluminium content.hall bewithin 0'02toO'OS percent, :1Sulphurto tbeorder0(0-0'to 0'12 percent may be surplied I:ymutualagrrur.rnt belwecnthe supplier andthepurchaser. IS 1875 :1992 purpose of finishing the heat and shall not 8.1 Tolerances for rolled billets (square and exceed the followinglimits: R.C.S. )bloomsand slabsforgeneral engineer Constituent Percent ing forgingsshall be as givenbelow: Nickel 0'30 Cross-Sectional Permissible Chromium 0'30 Dimensions Variation Copper 0'25 mm mm Molybdenum 0'05 Less than 100 ± 1'5 Vanadium 0'05 + 100to 150 4'5 Boron 0'0003 - 2'0 Tin 0'05 + Over ISO 6'0 NOTES - 3'0 1 Trace elements(Cr+ Ni +Mo) whenadded 8.2.1 For forged blooms, billetsand slabs,the togethershallnotexceedO'SOpercent. tolerances shall be in accordance with :1Percentcopper+lOx (Percenttin) shallnot ]S 9684 : 1980. exceedO'SOpercent. 8.3 For special requirements, the dimensional 7 FREEDOMFROMDEFECTS tolerancesshall be ID accordance with Grade I ofIS 3739: I!l87. 7.1 Billets, blooms, slabsand bars shall be reasonably free from any external or internal 9 MECHANICALTEST cracks,flakes, laps,rough,jaggedand imperfect 9.1 Tensile Test edgesand otherinjurioussurface imperfections. The tensile tests shall be carriedout in accor Unless specified in the order, the suitable dance withIS 1608: 1972. The test pieces shall method ofpartingmay be used by the manu be machined lengthwisefrom each test sample facturer and after parting the material shall be selectedas prescribed in10. The tensile pro sufficiently straight. perties shallconform to therequirementsgiven 8 DIMENSIONAL TOLERANCES in Table2. Theproperties given in Table2are applicable to test piecetaken on rounds in the 8.1 Rolled steel bars for general engineering direction of the fibre, the axis of which cor forgings shall be trueto the prescribed dimen responds to Fig. 1. For rectangular sections sions within the tolerances specified in the ranges for equivalent section shall be as IS 1852 :1985. given in Fig. 2. CIRCULAR SECliON >10~25 > 28 RECTANGULAR SECTIONS Alldime nsionsInmillimetres. FlO. 1 LOCATIONOFTHBTBNSILBTSSTPIBCBS IN THB PaODUCTSTOBB DELlVBUD 3