CLARM HB3 Through hardening steels
Spécifications
- EU
33NiCrMoV15
Typical composition
- C
0,33
- Ni
3,5
- Cr
1,4
- Mo
0,5
- V
0,2
- Mn
0,2
Applications
• Large caliber gun barrels and accessories (breech rings, breech blocks, muzzle brakes, etc…).
• Pressure vessels.
• Mechanical parts in the range of YS 1200 to 1300 N/mm2.
Mechanical properties
• High mechanical characteristics.
• Good impact strength at low temperature.
• High level of hardenability in water and oil.
• Good characteristics at high temperatures.
• Good temper resistance.
Mechanical features
| Heat treatment | UTS (N/mm²) | A (%) |
|---|---|---|
| T + Rv 615°C | 1325 | 14 |
| T + Rv 560°C | 1420 | 11 |
- Solution treated : H
Annealed : R - Thermo-mechanical treatment : TM
Quenched and tempered : T+RV - Sub-zero treatment : F
Solution treated and aged : T+RV