1.0395 1.4122 1.8907SPC440HY APFC440 APFC440 NKCA440 APFC440 KBCF440 NCAH440 SANC490 APFC490 APFC490 SPFC490 APFC490 NKCA490 APFC490 KBCF490 SANC540 APFC540 APFC540 SPFC540 APFC540 NKCA540 APFC540 SANC590 JSC590R APFC590 SPC590 热处理硬度，切削性和耐磨性，适用于精密冲剪冲压模，难加工的冷锻、深抽和挫牙用模及高速冲剪冲头，不锈钢板冲头。