254 SMO Stockist, 254 SMO UNS S31254 Products
254 SMO WERKSTOFF NR. 1.4547 Manufacturer, 254 SMO Composition
254 SMO Composition
254 SMO Composition
| Element | Content (%) |
|---|---|
| Iron, Fe | 55.69 |
| Chromium, Cr | 20 |
| Nickel, Ni | 18 |
| Molybdenum, Mo | 6.1 |
| Nitrogen, N | 0.20 |
| Carbon, C | 0.010 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 680 MPa | 98600 psi |
| Yield strength | 300 MPa | 43500 psi |
| Modulus of elasticity | 195 GPa | 28300 ksi |
| Shear modulus | 75 GPa | 10900 ksi |
| Poisson’s ratio | 0.30 | 0.30 |
| Elongation at break | 50 % | 50 % |
| Hardness, Brinell | 210 | 210 |
254 SMO Melting Point
|
Melting point |
1320-1390 ℃ |
|
Density |
8.0 g/cm3 |
254 SMO Equivalent
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | SIS | GOST |
| SMO 254 | S31254 | 1.4547 | Z1 CNDU 20.18.06Az | X1CrNiMoCuN20-18-7 | – | 2378 | – |
Steel Alloy’s 254 SMO is an advanced austenitic stainless steel engineered for demanding environments such as seawater and chloride-rich media. Known as UNS S31254, this steel boasts exceptional qualities: superior resistance to pitting and crevice corrosion, a PRE (Pitting Resistance Equivalent) of ≥42.5, high impact toughness, and robust resistance to general corrosion and chloride stress corrosion cracking. It offers greater strength compared to traditional austenitic stainless steel and is highly weldable. In many applications, 254 SMO™ proves to be a cost-effective alternative to high nickel and titanium alloys.
For operations involving 254 SMO material, including forging and upsetting, temperatures ranging from 982°C to 1149°C (1800°F to 2100°F) are ideal. Exceeding this range may lead to scaling and reduce material workability. Post-process annealing is avoided to maintain the steel’s maximum corrosion-resistant properties.