2.4856 | NiCr22Mo9Nb | Alloy 625 | UNS N06625 | BS NA21 | GL3
2.4856 | NiCr22Mo9Nb | Alloy 625 | UNS N06625 | BS NA21 | GL3
This nickel alloy is available from stock.
Please send enquiries to:
- Lothar Wendt
- phone: +49 (2133) 2706-28
- email: [email protected]
VALBRUNA GRADE
GL3
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
2.4856 / GL3 is a Nickel – Chromium – Molybdenum – Niobium alloy austenitic stainless steel whose structural strengthening is obtained by the effect of the addition of Mo and Nb and it can be defined as a multi-role alloy.
Applications
The structure and composition of GL3 offers an excellent resistance to several corrosive aggressive media in cryogenic up to high temperature environments. GL3 is suitable for the fabrication of many products such as flanges, valves, bolting, pump shafts, chains, fittings, food/beverages industry equipment, turbines, storage tanks, parts working in corrosive environments such as chemical processing, handling acid, subsea and deep-water offshore oil production systems and several marine applications. In addition, this alloy is used in several aircraft applications and nuclear components and where creep and thermal fatigue resistance are required in both in oxidizing and reducing high temperature environments.
Designations
| Commercial name | Alloy 625 |
| International Designation | NiCr22Mo9Nb |
| W.N. | 2.4856 |
| UNS | N06625 |
| BS | NA21 |
Chemical composition
| Chemical element | C | Mn | Si | S | P | Ni | Cr | Fe | Mo | Cu | Ti | Al | Co | Ta+Nb | Ta | Nb |
| Minimum value % | - | - | - | - | - | 58% | 20% | - | 8% | - | - | - | - | 3,15% | - | 3,15% |
| Maximum value % | 0,1% | 0,5% | 0,5% | 0,015% | 0,015% | - | 23% | 5% | 10% | 0,5% | 0,4% | 0,4% | 1% | 4,15% | 0,5% | 4,15% |
Mechanical properties
| Condition | Subtype | Rm [N/mm²] | Rm [Ksi] | Rp0,2% [N/mm²] | Rp0,2 % [Ksi] | E4d [%] | HBW |
| Grade 1 - Ø < 102 - Annealed | A | 830 min | 120 min | 414 min | 60 min | 30 min | 325 max |
| Grade 1 - 102 < Ø < 254 - Annealed | A | 760 min | 110 min | 345 min | 50 min | 25 min | 325 max |
| Grade 2 - Solution Annealed | A | 690 min | 100 min | 276 min | 40 min | 30 min | 325 max |