Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Molybdenum | Copper | Nickel | Vanadium | Boron | Columbium |
---|---|---|---|---|---|---|---|---|---|---|---|
0.08–0.18 | 0.25–0.66 | 0.025 | 0.010 | 0.15 | 2.63–3.37 | 0.85–1.15 | 0.28 | 0.28 | 0.18–0.33 | 0.015–0.070 | 0.010–0.075 |
Class |
Tensile strength,min: ksi [MPa] |
Yield strength,min: ksi [MPa] |
Elongation in 2 in. [50 mm] min, %A,B |
---|---|---|---|
Class 4 | 85–110 [585–760] | 55 [380] | 20 |
Class 4a | 85–110 [585–760] | 60 [415] | 18 |