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GBT A20404

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(％) Si(％) Mn(％) P(％) S(％) Cr(％) B(%) Al(%)
0.38-0.45 Max 0.30 0.60-0.90 0.035 0.035 0.90-1.20 — —

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