ASTM A231
2020-04-08 09:14:22| Specification and Steel Grade | : | ASTM A231 |
| Type | : | Alloy Steel |
| Main Chemical Compositions|(%) | : | C0.48～0.53，Cr0.80～1.10，V≥0.15 |
| Strength of Extension|σb/MPa | : | 1310～2070 |
| Elasticity Modulus|E/GPa | : | 210 |
| Torsional Property|σb Min(%) | : | 45 |
| Rigidity Modulus|G/GPa | : | 80 |
| Hardness|HRC | : | 41～55 |
| Working Temperature|/℃ | : | 220 |
| Features and Use | : | CrV steel for spring by impact load and high temperature work.ASTMA232 used as 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. | ||
