chemical composition and mechanical properties of steel-indian standard

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1、ChemicalCompositionAndMechanicalPropertiesofSteel(IndianStandard)IS:10748-SpecificationOfHotRollingSteelStripsForWeldedTubes&PipeCHEMICALCOMPOSITIONGradeC%MaxMn%Max.S%Max.P%Max.I0.100.500.050.05II0.120.600.050.05III0.161.200.050.05IV0.201.300.050.05V0.251.300.050.05MECHANICALPROPERTIESGradeUTS

2、(Min.)MpaYS(Min.)MpaEI.%(Min.)5.65 Sqrt(So)I29017030II33021028III41024025IV43027520V49031015 IS:6240HR-SteelPlate,SheetandCoilforLPCHEMICALCOMPOSITIONConstituentPercentCarbon,Max.0.16Manganese,Min0.30Silicon,Max.0.25Sulphur,Max.0.030Phosphorous,Max.0.030Aluminium,Min0.02MECHANICALPROPERTIESPro

3、pertyGrade*TensileStrengthMpa(kgf/mm²)350to450(36to46)YieldStrength.Mpa(Kg/mm²)Min240(25)Elongation,Minpercentonguagelength5.65OSo25BendtECv(for2.80-3.15mmthickness)min13.5*Bothlongitudinalandtransversedirections. TOLERANCEASPERIS:513ToleranceonThicknessofSheets Toleranceonthethicknessfordiffe

4、rentwidthNominalThicknessUpto1250mmAbove1250Upto1600Above1600 Upto0.25+/-  0.03--Above0.25-0.40+/-  0.04--Above0.40-0.60+/-  0.05+/- 0.06-Above0.60-0.80+/-  0.06+/- 0.07+/- 0.08Above0.80-1.00+/-  0.08+/- 0.09+/- 0.10Above1.00-1.25+/-  0.09+/- 0.10+/- 0.12Above1.25-1.60+/-  0.11+/- 0.12+/- 0.14

5、Above1.60-2.00+/-  0.12+/- 0.14+/- 0.16 ToleranceonWidthOfSheetsWidthofSheetsToleranceUpto1250mm+7-0Above1250mm+10-0 ToleranceonLengthofSheetsLengthToleranceUpto2000mm+15-0Above2000mm+0.75%ofthelength-0 ChamferToleranceForCoilsandCutLengthFormToleranceCoil 20mminany5000mmlengthCutLength0.4%Xle

6、ngth StandardFlatnessToleranceforcutlengthsThicknessToleranceonspecifiedwidthUpto1200Above1200-Upto1500Above1500Upto0.63151822Above0.63-1.25121519Above1.25101217 SpecialFlatnessToleranceforCutlengthsRollerLevelledandStretcherLevelledThickness                         ToleranceonspecifiedwidthUp

7、to1200Above1200Upto1500Above1500Upto0.63678Above0.63-1.25567Above1.25456           IS:2062-SpecificationofSteelforGeneralStructuralPurposesCHEMICALCOMPOSITIONGradeC%Max.Mn%Max.S%Max.P%Max.Si%Max.C.E.%Max.A0.231.500.0500.0500.400.42B0.22