IS 432-1 (1982): Mild Steel and Medium Tensile Steel Bars ...

1 Disclosure to Promote the Right To InformationWhereas 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. ! $ ' + - Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge 0 1 ' 5 Jawaharlal Nehru Step Out From the Old to the New 1 + , 1 + Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live !

2 > 0 B Bhart hari N ti atakam Knowledge is such a treasure which cannot be stolen Invent a New India Using Knowledge IS 432-1 (1982): Mild Steel and Medium Tensile Steel Barsand Hard-Drawn Steel Wire for Concrete Reinforcement, Part1: Mild Steel and Medium Tensile Steel Bars [CED 54:Concrete Reinforcement]IS :432(PartI ) - 1982 IndianStandardSPECIFICATION FORMILDSTEELANDMEDIUMTENSILESTEELBARSAND HARD-DRAWNSTEBLWIREFORCONCRETEREINFORCEM ENTPARTIMILDSTEELANDMEDIUMTENSILE STEELBARS( Third Revision )FifthReprintDECEMBER1992 UDC669-141 24-422+669-14 018'295-422:666-982 24(CJCopyright1982 BUREAUOFINDIANSTANDARDSMANAKBHAVAN,9 BAHADURSHAHZAFARMARGNEWDELHI110002Gr 3 June 1982 IS :432(PartI ) 1982 IndianStandardSPECIFICATIONFORMILD Steel ANDMEDIUMTENSILE.)

3 STEELBARS ANDHARD-DRAWNSTEEL WIREFORCONCRETEREINFORCEMENTPARTIMILDSTE ELANDMEDIUMTENSILESTEELBARS( ThirdRevision)JointSectionalCommitteefor ConcreteReinforcement,BSMDC8(Continuedon page2 )RepTeJentingCentralPublicWorksDepartmen t,NewDelhiChairmanSHRlG. S. RAOM embersSUl'EttINTENDINGENGINEER(CDO) (AlternatetoShri G. )Da]. ,JamshedpurSHRI A. N. MITRA (Alternate).SHRI ofIndia,CalcuttaSHRI S. ( India)Ltd, (Alternate)CHIEFENGINEER( D&R)IrrigationDepartment,GovernmentofPun jab;ChandigarhSHRI (India)Ltd,NewDelhiNationalMetallurgical Laboratory(CSIR),JamshedpurSaRIN. C. JAINStupConsultantsLtd, M. C. TANDON(Alternate)SHRI M. P. JASUJAR esearch&DevelopmentCentreforIron& Steel ( SteelAuthorityofIndiaLtd),RanchiEngineer -in-Chief'sBranch,ArmyHeadquarters,NewDe lhiMAJR,CHANDRASEKHARAN(Alternate)DIRECT OR( CD )(Alternate) ,STANDARDSR esearch,Designs&StandardsOrganization,( B&S )-1 LucknowASSISTANTDIRECTon,STANDARDS( B&S )-11 (Alternate) ,BombaySHRI S.

4 G. JOSHI (Alternate)SHRI 'TE@Copyright1982 BUREAUOFINDIANSTANDARDST hispublicationisprotectedundertheIndianC flpyllghtAct~XIVof1957)udreproductioninw holeor inpartbyanymeansexceptwithwrittenpermiss ionofthepublishershall bedeemedto be aninfringpmentofcopyrightunderthe said Act PublicWorksDepartment,LudmowTheConcreteA ssociationofIndia,BombayIS :432(PartI) -1982(ContinuedfrompageI )MembersRepresentingSURI ,BombaySHRIP. (Alternate) , (Alternate)SaarM. , (Alternate)SHRI ,BombaySRRI (Alternate) E. (Alternate)DR ,CalcuttaDR (Alternate).SURI A. ,MinistryofShippingandTransportDRV. (CSIR),RoorkeeSHRI (Alternate)SURI S. (P)Ltd,CalcuttaSHRISALILRoy(Alternate)SU RI PANTHAKYH industanConstructionCoLtd,BombaySHRIP.

5 (Alternate)DR G. ! ,BombaySH,RIA. (Alternate) ,CalcuttaSURI , (Alternate)SHRI , ,MadrasSHRI C. (Alternate)SHRI ,NewDelhiSHRIAsn,KUMAR(Alternate)SURI ,DirectorGeneral,BIS(&-ojfi&ioMnnlur)Dir ector( Civ Engg )SeCTdtlrySHRiM. ( CivEngg)BIS2 AMENDMENTNO. 1 DECEMBER2004 TOIS 432 (PART1):1982 SPECIFICATIONFORMILD Steel AND Medium Tensile Steel BARSANDHARD-DRAWNSTEEL WIRE FOR CONCRETEREINFORCEMENTPART 1 MILD Steel AND Medium Tensile Steel BARS(ThirdRevision)( Page4, )-Insert the following new para at the end oftheclause:Thefollowing test methods given in this those given in ISO Standards:Sl )ii)Mechanicaltestingof1608metals-Tensil e testingMethod for bend test1599689210065 NOTE -For assessing the conformity of the reinforcement to the requirements laiddowninthis standard, this standard also permits the use of test methods covered by theaboveISO Standards.

6 (CED54)Reprography Unit, BIS, New Delhi. India IS : 432 (PartI ) - 1982 IndianStandardSPECIFICATIONFORMILDSTEELA NDMEDIUMTENSILESTEELBARSANDHARD-DRAWNSTE EL WIREFORCONCRETEREINFORCEMENTPARTIMILD STEELANDMEDIUMTENSiLESTEEL BARS( ThirdRevision) W (PartI ) (ThirdRevision)wasadoptedbytheIndianStan dardsInstitutionon 31 March1S-82, firstpublishedin 1953andsubsequentlyrevisedin ,revisionhasbeentakenupwitha viewtomodifyingtheearlierprovisionsin ,someoftheprovisionshavebeenrevisedbased onthelatestIndianStandards,suchasIS:226- 1975 *,IS:961-l975t,IS:l599-l974t,IS:l608 -l972 ,IS:1732-197111,IS:1762(Part1)-1974~andI S :1977- 1975 **. 'mediumtensilesteel insteadof'hightensilesteel'(seeIS:96l-l9 75t)in ,theterm'hightensilesteel'is, as ageneral*Specificationforstructuralsteel (standardquality)(fifthrevision).

7 TSpecificationforstructuralsteel (hightensile)(secondrevision).:j:Methodf orbendtest forsteelproductsotherthansheet,strip,wir eandlube(firstrevision). Methodfortensiletestingofsteelproducts(f irstrevision).IIDimensions forroundandsquaresteelbarsforstructurala ndgeneralengineeringpurposes(firstrevisi on).'~Codefordesignationofsteel:PartI Based onlettersymbols(first revision). *Specificationforstructuralsteel(ordinar yquality)( ).3 IS : 432 (PartI ) 1982practice,usedtomeansteelhavingtensil estrengthsin astillhigherrange,say 1 use instructureslocatedinearthquakezonessubj ectedto severedamageandforstructuressubjectedtod ynamicloading(otherthanwindloading),such asrailwayandhighwaybridges(seeIS:1893-19 75* ). \\"eldingofreinforcementbancoveredin ,dueweightagehasbeengiventointernational coordinationamongthestandardsandpractice sprevailingindifferentcountriesinadditio ntorelatingit ,thefinalvalue,observedorcalculated,expr essingtheresultofa testoranalysis,shallberoundedoffinaccord -ancewithIS : 2-1960.

8 ' (PartI )coverstherequirementsofmildsteelandmedi umtensilesteelplainbarsinroundandsquares ectionsfor use , 'coils'oranumberoflengthsproperlyboundto gether, coil."Criteriaforearthquakeresistantdesi gnofstructures(thirdrevision).tSpecifi~a tionforstructuralsteel (ordinaryquality)(secondrel'ision). (rlllislfl).4 IS : 432 (PartI ) coils orbundles,presentedforexaminationandtest (thatis,loadperunitcross-sectionalarea)a twhichelongationfirstoccursin the ,theyieldstress isthestressundertheprescribedtestingcond itionsatwhichthe:observedincreaseinthega ugelengthis 1/200ofthegaugelengthwhentherateatwhicht heloadappliedisnotmorethan5N/mm" :a)Mildsteelbars,andb) :a)Mildsteelbars,GradeI;andb)MiLlsteelba rs, ,GracieI shallbemanufacturedandhavethechemicalcom positioninaccordancewiththerequirementso fSteelDesignationFe 41O-SofJS: 226- 1975 *.

9 ,GradeIIshallbemanu-facturedandhavethech emicalcompositioninaccordancewiththerequ irementsofSteelDesignationFe 410-0ofIS: 1977-1975t. Specificationforstructuralsteel(standard quality)(fifthrevision).tSpecificationfo rstructuralsteel(ordinaryquality)(second revision).5 5, 6, 8, 10, 12, 16, 20, 22, 25, , 36, 40,45and50mmbe inaccordancewithIS:1732-IS :432(PartI ) :961- 1975 * wellandcleanlyrolledto free fromcracks,surfaceflaws,laminationsandro ugh,jaggedandimperfectedgesandallotherha rmfulderec~.. stress, asgiveninTableI; specified thisstandard,therequirementsofIS:226-1S7 5 All test piecesofbarsshallbeselectedbythepurchase rorhisauthorizedrepresentative,either:a) fromthecuttingofbars;or*Specificationfor structuralsteel( hightensile) (secondrevision).

10 TDimensionsforroundandsquaresteel bars forstructuralandgeneralengineeringpurpos es( ).tSpecificationforrollingandcuttingtole rancesforhot-rolledsteelproducts(secotut revision).' Specificationforstructuralsteel(standard quality)(fifthTension).6 IS : 432 (PartI ) 1982 TABLE1 MECHANICALPROPERTIESOFBARS(Claus, ) (f1(ALSIZEOFBARULTIKATETENSILESTRE88,Min YIELDSTRES!)MinELONGATION-PERCENT, ,IForbarsup toandincluding4102502320mmForbarsover20m m,up mm,upto37021525andincluding50 ,diumTensileSteelForbarsup toandincluding5403502016mmForbarsover16 mm,up to54034020andincluding32 mmForbarsover32 mm,up to51033020andIncluding50 mm-Elongationon agaugelength5 65 VSowhereSo ) if he so desires, fromanybaror the coil,afterit has beencuttotherequiredor specifiedlengthandthe test piecetakenfromanypartof , the test piece shall bedetachedfrom thebarorthe coil,exceptin Before test piecesareselected,themanufacturerorsuppl iershallfurnishthepurchaseror hisauthorizedrepresentativewithcopiesoft he millrecordsgivingthenumberofbarsineachca stwithsizesaswell as IS : 432 (PartI ) ,yieldstressantielonga-tionofbarsshallbe determinedinaccordancewiththerequirement sofIS.