SCr420H SCr420H交货状态：以轧制或锻制状态交货。根据需方要求也可以热处理（正火、退火或高温回火）状态交货。交货状态应在合同中注明。 化学成份： 碳 C ：0.17～0.23 硅 Si：0.15～0.35 锰 Mn：0.55～0.90 硫 S ：允许残余含量0.030 磷 P ：允许残余含量0.030 铬 Cr：0.85～1.25 铜 Cu：允许残余含量0.30 SCr420H力学性能： SCrSCr435 SCr440 SCr445 SNC236 SNC415 SNC631 SNC815 SNC836 SNCM220 SNCM240 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 此信息由恒鑫钢材提供