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ASTM P4

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.12
Si 0.10  0.40
Mn 0.20  0.60
P   0.030
S   0.030
Cr 4.00  5.25
Mo 0.40  1.00
V  
W  
Ni+Cu   0.75