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BT1

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(%) Si(%) Mn(%) Cr(%) Ni(%) Mo(%) V(%) W(%) Co(%) Other(%)
0.70-0.80 ≤0.40 ≤0.40 3.75-4.50 ≤0.40 ≤0.70 1.00-1.25 17.5-18.5 ≤1.00 Cu≤0.20,Sn≤0.05