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GBT K273

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) W(%) N(%) B(%) Nb(%) Al(%)
0.75-0.90 0.30-1.00 4.50-6.00 Max 0.04 Max 0.02 18.0-21.0 4.50-5.50 0.80-1.20 0.80-1.20 0.10-0.20 Max 0.005 0.65-0.85 Max 0.05