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JIS SKT4

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Mo(%) V(%)
0.50-0.60 0.10-0.40 0.60-0.90 Max 0.030 Max 0.020 0.80-1.20 0.35-0.55 0.05-0.15