Alloy & Machinery Steel
Applications
- Permanently stressed machine
- Engine & vehicle partswhen high strength & toughness are required.
- Balls, rollers & rings for roller bearings, diameter 30 mm.
HEAT TREATMENT
| AISI/ASTM | Annealing (°C) | Quenching (°C) | Tempering (°C) | Annealed (HB, max) | Quenched & Tempered (HRC) | EN |
|---|---|---|---|---|---|---|
| 4340 | 650-700 | 830-850 | 540-680 | 220 | 48 | EN24 |
| 1045 | 660-700 | 830-860 | 530-670 | 190 | 38 | EN43B |