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美國AISI A3120合金結構鋼的化學成分：
C碳：0.17-0.22
Si硅:0.20-0.35
Mn錳: 0.6-0.8
P磷: ≤0.025
S硫: ≤0.025
Cr鉻: 0.55-0.75
Ni鎳:1.10-1.40
合金結構鋼：國產12Mn,18Nb,10MnSiCu,12MnV,14MnNb,16Mn,15MnV,15MnTi,16MnNb,20Mn2
30Mn2,35Mn2,40Mn2,45Mn2,50Mn2,20MnV,27SiMn,,20MnVB,40MnVB,20MnTiB,20SiMnVB,15Cr,15CrA,20Cr,30Cr,35Cr,40Cr,45Cr,
50Cr,38CrSi,40CrMn,20CrMnSi,25CrMnSi,Q345,Q295,Q390,Q420
美國：1320, 1330 ,1325, 1340, 1345,,5120, 5130, 5135, 5140, 5145, 5150, 4119, 4118, 4135 4140 ,6140, 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 ，15CrMo5，20CrMo5，25CrMo4，51CrV4,
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,以上材料僅供參考，如有需要，歡迎來電咨詢！
