A572 Chemical Requirements
| Grade | Maximum Diameter, inches | Carbon, max% | Manganese, max% | Phosphorus, max% | Sulfur, max% | Silicon, max% |
|---|---|---|---|---|---|---|
| 42 | 6 | 0.21 | 1.35 | 0.04 | 0.05 | 0.40 |
| 50 | 4 | 0.23 | 1.35 | 0.04 | 0.05 | 0.40 |
| 55 | 2 | 0.25 | 1.35 | 0.04 | 0.05 | 0.40 |
| 60 | 1-1/4 | 0.26 | 1.35 | 0.04 | 0.05 | 0.40 |
| 65 | ½ to 1-1/4 | 0.23 | 1.65 | 0.04 | 0.05 | 0.40 |
| 65 | Below ½ | 0.26 | 1.35 | 0.04 | 0.05 | 0.40 |
| This abridged table shows only the chemical requirements for bars. The complete table including shapes and plates can be found in the ASTM standard at www.astm.org | ||||||