Steel card
1.4410/F53
VALBRUNA GRADE
V257M
STEEL TYPE
Superduplex Stainless Steel
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
V257M is a super duplex stainless steel with high alloying contents and is one of the best grades in the family of duplex stainless steels. Balance between the Chromium/ Molybdenum and Nickel/Nitrogen favours the forming of more Austenite than Ferrite in the structure. This improves the cryogenic toughness and pitting/crevice resistance corrosion with little or no influence on stress corrosion cracking resistance.
Applications
Petro-chemical and oil & gas industries, heat exchangers, water treatment systems, desalination and seawater devices, propeller shafts, off shore plant and all applications where both high corrosion resistance and high mechanical properties are indispensable conditions.
Designations
| AISI | F53 |
| W.N. | 1.4410 |
| UNS | S32750 |
| EN | X2CrNiMoN25-7-4 |
Chemical composition
| Chemical element | C | Mn | Si | S | P | Ni | Cr | Mo | Cu | N |
| Minimum value % | - | - | - | - | - | 6% | 24% | 3% | - | 0,24% |
| Maximum value % | 0,03% | 1,2% | 0,8% | 0,02% | 0,035% | 8% | 26% | 5% | 0,5% | 0,32% |
Mechanical properties
| Condition | Subtype | Rm [N/mm²] | Rm [Ksi] | Rp0,2% [N/mm²] | Rp0,2% [Ksi] | HBW | E4d [%] |
| Solution Annealed | A | 800 - 930 | 116 - 135 | 550 min. | 80 min. | 290 max. | 15 min. |