Element | Thickness | Composition (%) | Note |
Carbon (max) | 12.5 mm and under | 0.27 | A, B, C |
over 12.5 to 50 mm | 0.28 | A, B, C | |
over 50 to 100 mm | 0.3 | A, B, C | |
over 100 mm | 0.31 | A, B, C | |
Manganese | 0.85 – 1.20 | A, C | |
0.79 – 1.30 | B, C | ||
Phosphorus (max) | 0.025 | A, B | |
Sulphur (max) | 0.025 | A, B | |
Silicon | 0.15 – 0.40 | A | |
0.13 – 0.45 | B |
Mechanical Property | Value |
Tensile Strength, MPa (ksi) | 485 – 620 (70 – 90) |
Yield Strength, min MPa (ksi) | 260 (38) |
Elongation min, % 200 mm (8 in) | 17 |
Elongation min, % 50 mm (2 in) | 21 |