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ASTM O7

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 1.10  1.30
Si 0.10  0.60
Mn 0.20  1.00
P   0.030
S   0.030
Cr 0.35  0.85
Mo   0.30
V 0.15  0.40
W 1.00  2.00
Ni+Cu   0.75