HPM75无磁模具钢 日立HPM75化学成分 CSiMnCrMoWVAlPS 0.65~0.75≤0.8014.5~16.02.0~2.50.5~0.80.5~0.81.5~2.02.7~3.3≤0.04≤0.03 磁导率 状态磁导率μ/mH·m-1 1150℃固溶 1180℃固溶 1150℃固溶,700℃2h时效 1180℃固溶,650℃20h时效 1180℃固溶,700℃2h时效 1180℃固溶,650℃20h时效,变形8.5% 1180℃固溶,650℃20h时效,变形14.5% 1180℃固溶,650℃20h时效,变形24.2% 1180℃固溶,650℃20h时效,变形42.2%1.2602×10-3 1.2603×10-3 1.2639×10-3 1.2607×10-3 1.2602×10-3 1.2608×10-3 1.2608×10-3 1.2617×10-3 1.2704×10-3
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