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ASTM D7

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％) V(%)
2.15～2.50 0.10～0.60 0.10～0.60 ≤0.030 ≤0.030 11.5～13.5 0.70～1.20 3.80～4.40

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