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ASTM A878

2020-04-08 09:14:22
     
Specification and Steel Grade : ASTM A878
Type : Alloy Steel
     
Main Chemical Compositions|(%) : C0.60~0.75,Cr0.35~0.60,V0.10~0.25
     
Strength of Extension|σb/MPa : 1410~2000
Elasticity Modulus|E/GPa :
Torsional Property|σb Min(%) :
Rigidity Modulus|G/GPa :
Hardness|HRC :
Working Temperature|/℃ :
Features and Use : Improve the CrV steel, used in high temperature working spring and valve spring
     
Remark:    
①, For helical compression  spring or tension spring, the distorting stress should be 75% of σb minimum.
②, It is the United States federal specification.
     
     


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