2.4819/Alloy 276
VALBRUNA GRADE
AVC276
STEEL TYPE
Corrosion Resistant Alloys
Profile shapes
- Round EN 10060 / EN 10278
- Flat EN 10058 / EN 10278
- Square EN 10059 / EN 10278
- Hexagonal EN 10278
- Angle EN 10056
- Bar steel, bright steel, wire, wire rod, billets, ingots, semi-finished products
Description of material
AVC276 is a low-Carbon Nickel alloy with Tungsten and a very high Molybdenum content. It offers a very high resistance to pitting and crevice corrosion in the presence of Chlorides together with a very good resistance to general corrosion and to stress corrosion cracking (SCC).
Applications
AVC276 is widely used in many chemical process in the presence of moderate oxidizing and reducing media. Therefore, is suitable for the fabrication of many products such as flanges, valves, bolting, pump shafts, offshore plant, heat exchangers, storage tanks, paper and pulping bleach equipment, oil & gas production, oil field applications in sour environments, rural applications, many products used in chemical processes, sterilizing solutions, and parts working in corrosive environments where type 316 grades and AN4 do not provide a sufficient corrosion resistance. In particular, this grade, offering a very good resistance in sea water, is widely used in naval applications.
Designations
| Commercial name | Alloy C276 |
| International Designation | NiMo16Cr15W |
| W.N. | 2.4819 |
| UNS | N10276 |
Chemical composition
| Chemical element | C | Mn | Si | S | P | Cr | Mo | Fe | Co | W | V |
| Minimum value % | - | - | - | - | - | 14,5% | 15% | 4% | - | 3% | - |
| Maximum value % | 0,01% | 1% | 0,08% | 0,03% | 0,04% | 16,5% | 17% | 7% | 2,5% | 4,5% | 0,35% |
Mechanical properties
| Condition | Subtype | Rm [N/mm²] | Rm [Ksi] | Rp0,2% [N/mm²] | Rp0,2% [Ksi] | E4d [%] | HBW |
| Solution Annealed | A | 690 min | 100 min | 283 min | 41 min | 40 min | 325 max |