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Q255 A

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Cu(%)
0.18~0.28 ≤0.30 0.40~0.70 0.045 0.050 ≤0.30 ≤0.30 ≤0.30