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ASTM H21

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(％) Si(％) Mn(％) P(％) S(％) Cr(％) V(%) W(%)
0.26～0.36 0.15～0.50 0.15～0.40 ≤0.030 ≤0.030 3.00～3.75 0.30～0.60 8.50～10.0

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