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ASTM O7

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％) V(%) W(%)
1.10～1.30 0.10～0.60 0.20～1.00 ≤0.030 ≤0.030 0.35～0.85 ≤0.30 0.15～0.40 1.00～2.00

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