Steel card
1.4501/F55
VALBRUNA GRADE
V257MWU
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
V257MWU is a super- duplex stainless steel with a very high pitting resistance equivalent PRE and is highly alloyed with Chromium, Nitrogen, Tungsten and Molybdenum. This grade is resistant to localized corrosion in aggressive environments, such as Chloride containing solutions, and is extensively used in seawater applications.
Applications
Off shore systems, petro-chemical and oil & gas industries, heat exchangers, water treatment systems, pressure vessels, 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 | F55 |
| W.N. | 1.4501 |
| UNS | S32760 |
| EN | X2CrNiMoCuWN25-7-4 |
Chemical composition
| Chemical element | C % | Mn % | Si % | S % | P % | Ni % | Cr % | Mo % | Cu % | N % | W % |
| Minimum value % | - | - | - | - | - | 6 % | 24 % | 3 % | 0,5 % | 0,2 % | 0,5 % |
| Maximum value % | 0,03% | 1% | 1% | 0,015% | 0,035% | 8% | 26% | 4% | 1% | 0,3% | 1% |
Mechanische Eigenschaften
| Condition | Subtype | Rm [N/mm²] | Rm [Ksi] | Rp0,2% [N/mm²] | Rp0,2% [Ksi] | E4D [%] | HBW |
| Solution Annealed | A | 750-895 | 109-130 | 550 min | 80 min | 25 min | 290 max |