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JIS SKS4

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(%) Si(%) Mn(%) P(%) S(%) Cr(%) W(%)
0.45-0.55 Max 0.35 Max 0.50 Max 0.030 Max 0.030 0.50-1.00 0.50-1.00