J429 Chemical Requirements
| Grade | Material | Carbon, % | Phosphorus, % | Sulfur, % | Grade Marking |
|---|---|---|---|---|---|
| 1 | Low or Medium Carbon Steel | 0.55 max | 0.030 max | 0.050 max | None |
| 2 | Low or Medium Carbon Steel | 0.15 - 0.55 | 0.030 max | 0.050 max | None |
| 5 | Medium Carbon Steel | 0.28 - 0.55 | 0.030 max | 0.050 max |  |
| 8 | Medium Carbon Alloy Steel | 0.28 - 0.55 | 0.030 max | 0.050 max |  |