| L80 |
It is a C-Mn steel. This steel is generally used for the manufacture of pipelines
Composition:
| %C | ≤%Si | ≤%Mn | ≤%P | ≤%S | %Cr | ≤%Mo |
| 0,3-0.35 | 0.2-0.3 | 0.95-1.35 | 0.03 | 0.015 | 0.3-0.5 | 0.06-0.01 |
Hot working:
Forging temperature range: 1260-850℃
Note: Heat to 1260 ℃. Do not forge below 850.
Heat treatment:
| Soft annealing ℃ | HB 30-soft annealed | Normalizing ℃ | Hardening temperature for quenching in Water ℃ | Hardening temperature for quenching in Oil ℃ | Tempering temperature ℃ |
| 650-700 | – | 850-880 | 820-850 | 830-860 | 550-660 |
Main application:
Arbors and discs of large cross section, pipe line
Shape of product:
Round, flat, step shape, ring, disc, shaft, other shape depend on customer needs
