Eileamaidean cumanta thairis air a h-uile 440 steels:
- 16-18% cromium
- 1% Manganese
- 1% sileaconach
- 0.75% Molybdenum
- 0.04% Phosphorus
- 0.03% sulbhur
- Cuid sa cheud de charbon
440A stàilinn
- 0.6-0.75% Carbon
440B stàilinn
- 0.75-0.95% Carbon
440C stàilinn
- 0.95-1.20% Carbon
Ùine puist: Samhain-25-2020