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ASTM 4820

2020-04-14 21:37:14
     
Steel Grade : ASTM 4820
Tpye : Special quality ball and roller bearing steel①(ASTMA535—1992)
     
CHEMICAL COMPOSITION    
C(%) : 0.18~0.23
Si(%) : 0.15~0.35
Mn(%) : 0.50~0.70
P(%)≤ : 0.015
S(%)≤ : 0.015
Cr(%) :
Mo(%) : 0.20~0.30
Ni(%) : 3.25~3.75
Other(%) :
     
     
Remark:    
①, The steel grade is AISI/SAE series, the content have been adjusted for P, S and  individual Si.
②, It should have the following elements in steel if not specified: Cr≤0.20%,Mo≤0.10%,Ni≤0.25%,Cu≤0.35%.
③, The whole aluminum and oxygen content should be the following:Alt≤0.050%,O2≤0.0015%.
     
     


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