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AISI Grade21

Chemical composition(mass fraction)(wt.%)

Chemical composition(mass fraction)(wt.%)
C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) B(%) Other(%)
0.20-0.30 Max 1.00 Max 1.00 Max 0.040 Max 0.040 25.0-29.0 1.75-3.75 5.0-6.0 Max 0.007 Fe Max 3.00