SNCM439合金結構鋼簡介： ●化學成份： 　　碳 C ：0.36～0.43 　　硅 Si：0.15～0.35 　　錳 Mn：0.60～0.90 　　硫 S ：允許殘余含量≤0.025 　　磷 P ：允許殘余含量≤0.025 　　鉻 Cr：0.60～1.00 　　鎳 Ni：1.60～2.00 　　銅 Cu：允許殘余含量≤0.025 　　鉬 Mo：0.15～0.30 　　●力學性能： 　　抗拉強度 σb (MPa)：≥980 　　屈服強度 σs (MPa)：≥835 　　伸長率 δ5 (%)：≥12 超勝模具鋼材經營部供應 合金結構鋼：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 美國：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 德國：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