1.4547/254SMO
VALBRUNA GRADE
V2018MN
STEEL TYPE
Austenitic 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
V2018MN is a low-carbon austenitic stainless steel with higher Molybdenum and Nickel contents than type 316 series steels. It offers a very high resistance to pitting and crevice corrosion together with a good resistance to general corrosion and stress corrosion cracking. In addition, its low Carbon content avoids intergranular corrosion after welding processes or in situations of slow heating/ cooling.
Applications
V2018MN 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, rural applications, many products used in chemical processes, sterilizing solutions, and parts working in corrosive environments where type 316 grades 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
| AISI | F44 |
| W.N. | 1.4547 |
| UNS | S31254 |
| EN | X1CrNiMoCuN20-18-7 |
Chemical composition
| Chemical element | C | Mn | Si | S | P | Ni | Cr | Mo | N | Cu |
| Minimum value % | - | - | - | - | - | 17,5% | 19,5% | 6% | 0,18% | 0,5% |
| Maximum value % | 0,02% | 1% | 0,7% | 0,01% | 0,03% | 18,5% | 20,5% | 6,5% | 0,22% | 1% |
Mechanical properties
| Condition | Subtype | Rm [N/mm²] | Rm [Ksi] | Rp0,2% [N/mm²] | Rp0,2% [Ksi] | E4D [%] | HBW |
| Solution Annealed | A | 655 - 850 | 95 - 123 | 305 min | 44 min | 35 min | 260 max |