HQ-39模具钢，H...

H21模具钢，H21...

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DH21模具钢，DH...

DH31-S模具钢，...

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H13模具钢，H13...

5CrNiMo模具钢...

8402模具钢，84...

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635模具钢，635...

6Cr4W3Mo2V...

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