1.0373 1.4106 1.8875SANH490 JSH490R APFH490 SPH490 APFH490 NKHA490 SHA490 KBHF490 NSH490D SANH540 JSH540R APFH540 SPH540 APFH540 SP251-540 RHA540D NKHA540 SHA540 KBHF540 NSH540D SANH590 JSH590R APFH590 SPH590 APFH590 SP252-540有良好的韧度和强度，一定的耐磨性，淬透性较好。各种中小型热锻模、热挤压模。