| 1.6511 | 40XH2MA |
It is normally heat treated by quenching in oil and tempering to the desired hardness. Depending on the precise carbon content, as-quenched hardness ranges from 54 to 59 HRC.
Composition:
| %C | %Si | %Mn | %P | %S | Cr | Mo | Ni | other |
| 0.37-0.44 | 0.17-0.37 | 0.5-0.8 | Max0.025 | Max0.025 | 0.6-0.9 | 0.15-0.25 | 1.25-1.65 | Cu;max0.3 |
Hot working:
Forging temperature range: 1230-850℃
Note: Heat to 1230 ℃. Do not forge below 850.
Heat treatment:
| Soft annealing ℃ | Normalizing ℃ | Hardening temperature ℃ |
| 590-660 | 845-900 | 830-855 |
Main application:
Structural components for heavy demands
Shape of product:
Round, flat, step shape, ring, disc, shaft, other shape depend on customer needs