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SAE M15

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 1.50  1.60
Si 0.20  0.40
Mn 0.10  0.40
Cr 4.00  4.75
Mo 3.00  3.50
V 4.75  5.25
W 6.25  6.75
Co 4.75  5.25