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ГОСТ у9A-3

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
0.85-0.94 0.17-0.33 0.17-0.28 ≤0.025 ≤0.018 0.20-0.40 0.25 0.25

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