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SAE T9

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 1.22  1.28
Si 0.10  0.40
Mn 0.10  0.40
Cr 3.75  4.25
Mo   0.75
V 3.75  4.25
W 18.00  18.50