SMO 254 / UNS N31254 / SMO WNR 1.4547
SMO 254 or UNS N31254 is a combination of nickel-molyoaenum-chromium with slight addition of tungsten making it exceptionally corrosion resistant in different atmospheres. It possess great workability giving high strength. Owing to its higher resistence ability to pitting and crevice erosion it is a recommended use in Chemical industry & food processing equipment, Trucks & trailer body manufacturing purposes.
Standard availability in product form ranges from sheet, plate, wire, tube, forging stock, round and pipe. SMO 254 contains low carbon content which helps reduce carbide precipitation while welding and enhances the corrosion resistance in the soldered structures. Has advanced strength than the conservative austenitic stainless steel.
SMO 254 GRADE MANUFACTURER, UNS N31254 SUPPLIERS, SMO 254 OS-LOK TUBE FITTINGS, SMO WNR 1.4547 EXPORTERS IN INDIA – LIMITING CHEMICAL COMPOSITION %
| Element | Percentage |
| C | ≤0.020 |
| Si | 0.080 |
| Mn | 1.00 |
| P | 0.030 |
| S | 0.010 |
| Ni | 18.00 |
| Cr | 20.00 |
| Mo | 6.1 |
| Cu | 0.7 |
| N | 0.20 |
MECHANICAL PROPERTIES :
| UNS S31254 | Sheet and strip | |
| 0.2% proof stress [MPa |
≥310 | |
| Tensile strength [MPa] |
≥690 | |
| Elongation [%] |
≥35 | |
| Hardness | [Hv] | – |
| [HB] | ≤223 | |
SMO 254 PHYSICAL PROPERTIES :
| Density [g/cm3] | 8.02 | |
| Specific heat [J/kg . K] 20°C | 464 | |
| Electrical resistivity [μΩ . cm] | 88.2 | |
| Thermal conductivity [W/m . K] | 12.3 | |
| Average coefficient of thermal expansion [10-6 /°C] |
20~200°C | 15.6 |
| 20~300°C | 16.1 | |
| 20~400°C | 16.8 | |
| Young’s modulus [MPa] | 16.7 × 10^4 | |
| Magnetism | None | |
| Melting range [°C] | 1360~1405 | |
SPECIFICATIONS AND DESIGNATIONS
| STANDARD | WERKSTOFF NR. | UNS |
| SMO 254 | 1.4547 | N31254 |
AVAILABLE TYPES OF SMO 254 / UNS N31254 GRADES PRODUCTS
SMO 254 PIPES & TUBES
SMO 254 FLANGES
SMO 254 PIPE FITTINGS
SMO 254 FORGED FITTINGS
SMO 254 FASTENERS
SMO 254 TUBE FITTINGS
SMO 254 ROUND BARS
