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GBT U40208

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(％) Si(％) Mn(％) P(％) S(％) Cr(％) B(%) Al(%)
0.18-0.23 Max 0.10 0.30-0.60 0.035 0.035 — — 0.02

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