ASTM A878
2020-04-10 18:38:11| 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. | ||
