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A2 tool steel是什么材料_百度知道

A2 tool steel是什么材料日本牌号:SKD12,A2是美国牌号,是一款冷冲模具钢主要成份%: C:0.95-1.05 Si:0.10-0.50 Mn:0.40-1.00 P<0.030 S<0.030 Cr:4.75-5.50 Mo:0 ...

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