SNCM240 SNCM240(JIS)化学成分及用途： SNCM220主要成份%: CSMnP<0.035 S<0.040 CrMMN 性能:此为低碳镍钼铝合金钢，热处理需渗碳表面坚硬，内部强韧。 用途:强力齿轮、车轴、汽机车等重要零件 SNCM415 SNCM420 SNCM431 SNCM439 SNCM447 SNCM616 SNCM625 SNCM630 SNCM815 SCM415 SCM418 SCM420 SCM421 SCM430 SCM432 SCM435 SCM440 SCM445 SCM822 SMn420 SMn433 SMn438 SMn443 SMnC420 SMnC443 SACM645 淬透性结构钢 SCr415H SCr420H SCr430H SCr435H SCr440H SNC415H SNC631H SNC815H SNCM220H SNCM420H SCM415H SCM418H SCM420H SCM435H SCM440H SCM445H SCM822H SMn420H SMn433H SMn438H SMn443H SMnC420H SMnC443H SCr415H SCr420H SCr430H SCr435H SCr440H SNC415H SNC631H SNC815H SNCM220H SCM420H SCM435H SCM440H SCM445H SCM822H SMn420H SMn433H SMn438H SMn443H SMn420H SMn443H 易切削结构钢 SUM11 SUM12 SUM21 SUM22 SUM22L SUM23 SUM23L SUM24L SUM25 SUM31 SUM31L SUM32 SUM41 SUM42 SUM43 此信息由富宝公司提供