常见的日本合金钢牌号
SMn420,SMn433,SMn438,SMn443,SCr415,SCr420 ,SCr430 ,SCr440 ,SCr445 ,SCM415 ,SCM418 ,SCM420 ,SCM421 ,SCM425,SCM430,SCM432,SCM435,SCM440,SCM445,SCM822,SNC236,SNC415,SNC631,SNC815,SNC836,SNCM220,SNCM415,SNCM420,SNCM431,SNCM439,SNCM447,SNCM616,SNCM625,SNCM630,SNCM815,SACM645