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TheEngineeringSocietyForAdvancingMobilityLandSeaAirandSpace?INTERNATIONAL
IHI
SAETechnicalStandardsBoardRulesprovidethat:κThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.
SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.
QUESTIONSREGARDINGTHISDOCUMENT:(412)772-8512FAX:(412)776-0243
TOPLACEADOCUMENTORDER;(412)776-4970FAX:(412)776-0790
PrintedinU.S.A.
Copyright1995SocietyofAutomotiveEngineers,Inc.Allrightsreserved.
SAEJ1268RevisedMAY95
SAEJ1268RevisedMAY95
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PAGE
4
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ChemicalCompositionLimits—Topermitsteelproducersthenecessarylatitudetomeetthestandardhardenabilitylimits,thechemicalcompositionlimitsofthesesteelshavebeenbroadenedsomewhatfromthoselimitsapplicabletothesamegradeswhenspecifiedbychemicalcompositiononly(SAEJ403andJ404).Thesebroaderlimitspermitadjustmentsinmanufacturingrangesofcompositiontocompensateforindividualplantmeltingprocedureswhichmightotherwiseinfluencethelevelsandwidthsofthebands.Themodificationshavenotbeengreatenoughtoinfluencethegeneralcharacteristicsoftheoriginalcompositionsoftheseriesunderconsideration.
Thechemicalcompositionlimitsforelectricfurnace,openhearth,andBOFsteelsareoutlinedinTables1and2ofthisdocumentandaresubjecttothepermissiblevariationsforproductanalysisoutlinedinTables1and3ofSAEJ409.
TABLE1—CARBONANDCARBONBORONHSTEEL(ladlechemicalcomposition,weight%,forelementsshown;seeFigures3to16forrespectiveH-bands)
UNSNo.
SAE
SteelNo. C Mn Si P,max⑴ S,max⑴
H10380
H10450
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