优质碳素结构钢D6-21.0314USt41.0336XC6USt131.0301C10Ck101.1121XC10C151.0401C12Ck151.1141XC15C22E1.1151C22ECk22XC18C25E1.1158C25ECk25XC25C30E1.1178C30ECk30XC32C35E1.1181C35ECk35XC38***0E1.1186***ECk40X***2***5E1.1191***5ECk45X***8C50E1.121C50ECk53C55E1.1203C55ECk55XC55C60E1.1221C60ECk60XC60Ck671.1231XC6515Mn31.046712M521Mn41.046920M530Mn41.114632M536Mn41.056132M540Mn41.115740M545M560Mn31.0642C25E4C30E4C35E4***0E4***5E4C50E4C55E4C60E4SL,***SWRH42BSWRH47BSWRH52BS58CSWRH62B126513501370143515721660167416651678177014301434167216741678040A04050A04040A10045M10040A15080M15C22E070M20C25E070M26C30E080M30C35E080M36***0E080M40***0E080M46C50E080M50C55E070M55C60E070M60060A67080A15080A20080A25080A30080A35080A40080A47080A52080A62G61500G51150G51200G41420G31400G33106G86200G43400FeE235PB240SR23520MnSiBSt420SA706M20MnSiVRB400WA615M20MnTiA706MFeTE400RB400WA615M25MnSiFeE400RB400SD390FeTE400RB400W)