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BT2①

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(％) Si(％) Mn(％) Cr(％) V(%) W(%) Co(%)
0.75-0.85 ≤0.40 ≤0.40 3.75-4.50 1.75-2.05 17.5-18.5 ≤0.60

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