高速钢冲针
日本JIS标准机械结构用钢牌号:S10CS12CS15CS17CS20CS22CS25CS28CS30CS33CS35CS38CS40CS43CS45CS48CS50CS53CS58CS09CKS15CKS20CK日本JIS标准淬透性结构用钢牌号:***n420H***n433H***n438H***n4443HSCr415HSCr420HSCr435HSCr440HSCM415HSCM418HSCM420HSCM435HSCM440HSCM822HSN***15HSNC631HSNC220HSN***20H日本JIS标准易切削钢牌号:SUM11SUN12SUM21SUM22SUM22LSUM23SUM23LSUM24LSUM25SUM31SUM31LSUM41SUM42SUM43…………日本JIS标准合金钢牌号:SNB5SNB7SNB16SNB21-1-5日本JIS标准轴承钢牌号:SUP3SUP6SUP7SUP9SUP9AAUP10AUP11AAUP12AUP13SUJ1SUJ2SUJ3SUJ4SUJ5)