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1、ASTMA554-88a/ASMESA554WELDEDSTAINLESSSTEELMECHANICALTUBING(ASTMA554-88a/ASMESA554/ASTMA554-88a/ASME-SA554)ASTMA554-88a/ASMESA554WELDEDSTAINLESSSTEELMECHANICALTUBING(ASTMA554-88a/ASMESA554/ASTMA554-88a/ASME-SA554)焊接不锈钢管机械1.Scope1.1Thisspecificationcoversweldedstainlesssteeltubingformechanica
2、lapplicationswhereappearance,mechanicalproperties,orcorrosionresistanceisneeded.ThegradescoveredarelistedinTalbe1.1.2Thisspecificationcoversas-weldedorcold-reducedmechanicaltubinginsizesto16in.(406.4mm)outsidediameter,inclusive(forroundtubing)andinwallthicknesses0.020in.(0.51mm)andover.1.3T
3、ubesshallbefurnishedinoneofthefollowingshapesasspecifiedbythepurchaser:round,square,rectangular,orspecial.1.4Supplementaryrequirementsofanoptionalnatureareprovidedandwhendesiredshallbesostatedintheorder.1.5Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Chemicalcomposition1。范围1
4、.1本规范包括焊接不锈钢管的机械应用场合露面，力学性能，耐腐蚀性或是必要的。涵盖的职系中列出Talbe1。1.2本规范涉及的焊接或冷减少机械油管尺寸16英寸（406.4毫米）外径，包容性（圆形管）和管壁厚度0.020in（0.51毫米）及以上。1.3管须提交下列其中一个形状所指明的买主：圆形，正方形，长方形或特殊。1.4补充要求的任择性质提供了理想时，须在该命令。值1.5英寸指出磅的单位被视为标准。化学成分Chemicalcomposition(%)CSiMnPSNiCrMoOthersMT301E,AT0.15Max1.00Max2.00Max0.040Max0.030Ma
5、x6.0~8.016.0~18.0--MT302E,AT0.15Max1.00Max2.00Max0.040Max0.030Max8.0~10.017.0~19.0--MT304E,AT0.08Max1.00Max2.00Max0.040Max0.030Max8.0~11.018.0~20.0--MT304LE,AT0.035Max1.00Max2.00Max0.040Max0.030Max8.0~13.018.0~20.0--MT305E,AT0.12Max1.00Max2.00Max0.040Max0.030Max10.0~13.017.0~19.0--MT309SE,A
6、T0.08Max1.00Max2.00Max0.040Max0.030Max--12.0~15.022.0~24.0MT309SCbE,AT0.08Max1.00Max2.00Max0.040Max0.030Max12.0~15.022.0~24.0-Nb+Ta:10¡¿C~1.00MT310SE,AT0.08Max1.00Max2.00Max0.040Max0.030Max19.0~22.024.0~26.02.0~3.0-MT316E,AT0.08Max1.00Max2.00Max0.040Max0.030Max11.0~14.016.0~18.02.0~3.0-MT31
7、6LE,AT0.035Max1.00Max2.00Max0.040Max0.030Max10.0~15.016.0~18.02.0~3.0-MT317E,AT0.08Max1.00Max2.00Max0.040Max0.030Max11.0~14.018.0~20.0--MT321E,AT0.08Max1.00Max2.00Max0.040Max0.030Max9.0~13.017.0~20.0-Ti:5¡¿C~0.60MT330E,AT0.15Max1.00Max2.00Max0.040Max0.03
