Steel card
1.4539/904L
VALBRUNA GRADE
AN4
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
AN4 is multi-rule super austenitic steel with Nickel-Chromium, Molybdenum and Copper with high resistance to several, different, kinds of corrosion.
Applications
The structure and composition of AN4 offers an excellent resistance to several corrosive aggressive media. AN4 is suitable for the fabrication of many products such as flanges, valves, bolting, pump shafts, chains, fittings, food /beverages industry equipment, parts working in corrosive environments such as pulp and paper chemical processing, handling acid, pharmaceutical and medical devices, oil production systems, petrochemical industries and several marine and seawater applications.
Designations
| Commercial name | Alloy 904L |
| International Designation | X1NiCrMoCu25-20-5 |
| W.N. | 1.4539 |
| UNS | N08904 |
Chemical composition
| Chemical element | C | Mn | Si | S | P | Ni | Cr | Fe | Mo | Cu | N |
| Minimum value % | - | - | - | - | - | 24% | 19% | 49% | 4% | 1,2% | - |
| Maximum value % | 0,02% | 2% | 0,7% | 0,01% | 0,03% | 26% | 21% | - | 5% | 2% | 0,1% |
Mechanische Eigenschaften
| Condition | Subtype | Rm [N/mm²] | Rm [Ksi] | Rp0,2% [N/mm²] | Rp0,2% [Ksi] | E4D [%] | HBW |
| Solution Annealed | A | 490 min | 71 min | 220 min | 32 min | 35 min | 230 max |