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GBT A70284

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(%) Si(%) Mn(%) P(%) S(%) Cr(%) B(%) Al(%)
0.25-0.32 Max 0.40 0.60-0.90 0.035 0.035 0.0005-0.0035 0.02