合金结构钢：SMn420 　　 　　●特性及适用范围：具有中等强度，冷变形时塑性高，低温性能好，与相应含碳量的碳钢相比，其淬透性较高。一般用作较小截面的零件，与20Cr钢相当，可作渗碳小齿轮、小轴、钢套、活塞销、柴油机套筒、汽车转向滚轮轴、汽门顶杆等；也可作调质钢用，如冷镦螺栓或较大截面的调质零件。。 本公司供应各国钢材; 合金结构钢：12Mn,18Nb,10MnSiCu,12MnV,14MnNb,16Mn,15MnV,15MnTi,16MnNb,20Mn2 30Mn2,35Mn2,40Mn2,45Mn2,50Mn2,20MnV,27SiMn,35SiMn,42SiMn,40B,45B,50B,40MnB,45MnB,20Mn2B,20MnMoB,15MnVB,20MnVB,40MnVB,20MnTiB, 20SiMnVB,15Cr,15CrA,20Cr,30Cr,35Cr,40Cr,45Cr,50Cr,38CrSi, 12CrMo,15CrMo,20CrMo,30CrMo,30CrMoA,35CrMo,42CrMo,12CrMoV, 35CrMoV,12Cr1MoV,38CrMoAl,20CrV,40CrV,50CrVA, 15CrMo,20CrMn,40CrMn,20CrMnSi,25CrMnSi 美国：1320, 1330 ,1325, 1340, 1345, 14B35, 14B50, 5115 ,5120, 5130, 5135, 5140, 5145, 5150, 4119, 4118, 4135 4140 ,6140, 6150, 5115, 5120, 4119, 4142, 3140, 3415, 3310, 3435 ,2515 ,3316, 8620 ,4340,E3310,E3316,4347 德国：20Mn6 ,30Mn5, 36Mn5 ,46Mn7, 50Mn7, 15MnV5, 20MnV6 ,42MnV7 ,37MnSi5, 46MnSi4, 15Cr3, 20Cr4 28Cr4, 34Cr4 ,41Cr4, 13CrMo4.4 ，15CrMo5，20CrMo5，25CrMo4，34CrMo4 ，42CrMo4， 24CrMoV5.5 21CrVMoW12,41CrAlMo7, 21CrV4, 51CrV4, 50CrV4, 16MnCr5, 20MnCr5, 42CrMo4, 30MnCrTi4, 40NiCr6 14NiCr10 ,14NiCr14 ,31NiCr14, 14NiCr18, 21NiCrMo2, 36CrNiMo4, 1.1169 ,1.1165, 1.1167, 1.0912 ,1.0913 1.5213, 1.5217, 1.5223 ,1.5122 ,1.5121, 1.7015, 1.7027, 1.7030, 1.7035, 1.7335, 1.7262, 1.7264, 1.7218 ,1.7220 1.7225, 1.7733, 1.8509, 1.7510, 1.8159, 1.7131, 1.7225, 1.8401 ,1.5711, 1.5732 ,1.5752, 1.5755, 1.5860, 日本：SMn420,SMn433,SMn438,SMn443,SCr415,SCr420,SCr430,SCr435,SCr440,SCr450,SCM415,SCM420,SCM435,SCM440,SCM430,SACM645,SMnC420,SMnC443,SNC236,SNC415,SNC815,SNC631,SNC836,SNCM220,SNCM439,SNCM447