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SAE B 275 GR20B

Chemical composition(mass fraction)(wt.%)

Elements Min.（≥） Max.（≤） Similar Remarks
C   0.12
Si   0.30
Mn   0.80
Cr   19.00
Ni   14.00
Mo  
Co  
W  
Al  
Cu  
Ti  
Fe   remaining
Nb   1.60

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