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BT21

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(%) Si(%) Mn(%) Cr(%) Ni(%) Mo(%) V(%) W(%) Co(%) Other(%)
0.60-0.70 ≤0.40 ≤0.40 3.50-4.25 ≤0.40 ≤0.70 0.40-0.60 13.5-14.5 ≤1.00 Cu≤0.20,Sn≤0.05