CLARM HB7 Through hardening steels
Spécifications
- EU
40NiCrMoV15
Typical composition
- C
0,4
- Ni
3,7
- Cr
1,6
- Mo
0,9
- V
0,3
- Mn
0,1
Applications
• Large caliber gun barrels and accessories (breech rings, breech blocks, muzzle brakes, etc…).
• Pressure vessels.
• Mechanical parts in the range of YS 1250 to 1400 N/mm2.
Mechanical properties
• High mechanical characteristics.
• Good impact strength at low temperature.
• High level of hardenability.
• Good characteristics at high temperatures.
• Good temper resistance.
Mechanical features
| Heat treatment | UTS (N/mm²) | A (%) |
|---|---|---|
| T + Rv 560°C | 1480 | 13 |
| T + Rv 585°C | 1350 | 14 |
- Solution treated : H
Annealed : R - Thermo-mechanical treatment : TM
Quenched and tempered : T+RV - Sub-zero treatment : F
Solution treated and aged : T+RV