碳素结构钢S09CKS10CS12CS15CS17CS20CS20CKS22CS25CS28CS30CS33SS35CS38CS40CS43CS45CS48CS50CS53CS55CS58C合金结构钢***n420***n433***n438***n443***n***43SCr415SCr420SCr430SCr440SCr445SCM415SCM418SCM420SCM421SCM425SCM430SCM432SCM435SCM440SCM445SCM822SNC236SN***15SNC631SNC815SNC836SNCM220SNCM415SNCM420SNCM431SNCM439SNCM447SNCM616SNCM625SNCM630SNCM815SACM645保证淬透性结构钢***n420H***n433H***n438H***n443H***n***20H***n***43HSCr415HSCr420HSCr430HSCr435HSCr440HSCM415HSCM418HSCM420HSCM425HSCM435HSCM440HSCM445HSCM822HSN***15HSNC631HSNC631HSNC815HSNCM220HSNCM420H易切削钢SUN21SUM22SUM22LSUM23SUM23LSUM24LSUM25SUM31SUM32SUM41SUM42SUM43冷镦钢SWRCH6RSWRCH8RSWRCH10RSWRCH12RSWRCH15RSWRCH17RSWRCH6ASWRCH8ASWRCH10ASWRCH12ASWRCH15ASWRCH16ASWRCH18ASWRCH19ASWRCH20ASWRCH22ASWRCH25ASWRCH10KSWRCH12KSWRCH15KSWRCH16KSWRCH17KSWRCH18KSWRCH20KSWRCH22KSWRCH24KSWRCH25KSWRCH27K)