NKHA390PZA AHS400 KBAH400 MSN-H400 ASSAPH440 JAH440W ARSAPH440 SHGA440 SGAPH440 SAPH440M RAHA440 NKHA440PZA AHS440 KBAH440 MSN-H440 ASSANH590 ARSAPH590 ASSAPH440B SHGA440SF ASSAPH490B SHGA490SF ASP1(SGCD1) JAC270C ARCC SCGA270C SGACC SP789 SPC1M RAD1 钢材用途：用在需要很好的耐磨性以及适当的韧性（抵抗冲击）通常使用在切削较厚较硬料
特点
1.优良的耐磨性和可抛光性
2.优良的耐磨性、机械加工性
3.淬硬时具有优良的稳定性