Grade | C | Mn | Cr | Mo | Si | P | S | Ni | Cu | V | H max. ppm |
Min. | 0.280 | 0.400 | 0.800 | 0.150 | 0.150 | - | - | - | - | - | - |
Max. | 0.330 | 0.600 | 1.100 | 0.250 | 0.350 | 0.025 | 0.025 | 0.350 | 0.350 | 0.300 | 2.000 |
Normalizing temperature | Time | Austenizing temperature | Time | Tempering temperature | Time |
Min. 1620ºF (899ºC) | Min. 60 minutes | 1575 - 1625ºF (857 - 885ºC) | Min. 60 minutes | Min. 1238ºF (670ºC) | Min. 60 minutes |
Yield strength minimum (0.2%) | Tensile strength minimum | Elongation in 2" (minimum) | Reduction Area (minimum) |
75 ksi (517MPa) | 95 ksi (655 MPa) | 18% | 35% |