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ASTM P4

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％)
≤0.12 0.10～0.40 0.20～0.60 ≤0.030 ≤0.030 4.00～5.25 0.40～1.00

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