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ASTM M43

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 1.15  1.25
Si 0.15  0.65
Mn 0.20  0.40
P   0.030
S   0.030
Cr 3.50  4.25
Mo 7.50  8.50
V 1.50  1.75
W 2.25  3.00
Co 7.75  8.75