| ASTM No. | Fe max | O max | N max | C max | H max | Pd | Al | V | Mo | Ni | Elong’n | Rp 0.2 | Rm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| wt% | wt% | wt% | wt% | wt% | wt% | wt% | wt% | wt% | wt% | % | MPa | MPa | |
| Grade 1 | 0.2 | 0.18 | 0.03 | 0.1 | 0.015 | 24 | 170—310 | 240 | |||||
| Grade 2 | 0.3 | 0.25 | 0.03 | 0.1 | 0.015 | 20 | 275—450 | 345—480 | |||||
| Grade 3 | 0.25 | 0.3 | 0.05 | 0.1 | 0.015 | 18 | 360—480 | 480—700 | |||||
| Grade 4 | 0.5 | 0.4 | 0.05 | 0.1 | 0.015 | 15 | 500—530 | 600—680 | |||||
| Grade 5 | 0.4 | 0.2 | 0.05 | 0.1 | 0.015 | 5.5- 6.7 |
10 | 800—1100 | 890—1400 | ||||
| Grade 6 | 0.1 | 16 | 780—820 | 820—860 | |||||||||
| Grade 7 | 0.3 | 0.25 | 0.03 | 0.1 | 0.015 | 0,12- 0,25 |
20 | 275—450** | 345 | ||||
| Grade 9 | 0.25 | 0.15 | 0.02 | 0.05 | 0.015 | 2,5- 3,05 |
15 | 550 | 650 | ||||
| Grade 11 | 0.2 | 0.18 | 0.03 | 0.1 | 0.015 | 0.12- 0.25 |
24 | 170-310** | 240 | ||||
| Grade 12 | 0.3 | 0.25 | 0.03 | 0.1 | 0.015 | 0.3 | 0.8 | 25 | 414—460 | 499—600 | |||
| Grade 13 | 0.5 | ||||||||||||
| Grade 14 | 0.5 | ||||||||||||
| Grade 15 | 0.5 | ||||||||||||
| Grade 16 | 0.04- 0.08 |
27 | 345 | 485 | |||||||||
| Grade 17 | 0.18 | 0.04- 0.08 |
35 | 206 | 345 | ||||||||
| Grade 18 | 0.04- 0.08 |
3 | 2.5 | 4 | |||||||||
| Grade 19 | 3 | 8 | 4 | ||||||||||
| Grade 20 | 0.04- 0.08 |
3 | 8 | 4 | |||||||||
| Grade 21 | 3 | 15 | 15—8 | 880—1250 | 915—1350 |