A182 F44 254 SMO® W. 1.4547
Superustenitic stainless steel A182 F44 254 SMO® W 1.4547 is excellent for submarine marine and other aggressive environments containing chlorides. A182 F44 – 254 SMO® W 1.4547 steel is a 6% molybdenum-nitrogen alloyed austenitic stainless steel with very high resistance to both uniform and localized corrosion. This product was specially developed for offshore oil and gas platforms and the pulp and paper industry, and for the following applications: resistance to chlorinated seawater components, sewage gas cleaning, marine exhaust gas cleaning, bleaching equipment in the pulp and paper industry, flanges and valves, and fasteners. Corrosion resistance of A182 F44 – 254 SMO® is optimal in the solubilized state and with high values of the corrosion resistance index (Pitting Resistance Equivalent Number – PREN = %Cr + 33-%Mo + 16-%N); PREN>425.
CHEMICAL COMPOSITION A182 F44 254 SMO® W 1.4547
| Element | Min | Max |
|---|---|---|
| C | 0.02 | |
| S | 0.01 | |
| P | 0.03 | |
| Yes | 0.7 | |
| Mn | 1.0 | |
| Cr | 19.5 | 20.5 |
| Ni | 17.5 | 18.5 |
| Mo | 6.0 | 7.0 |
| Cu | 0.5 | 1.0 |
| N | 0.18 | 0.25 |
MECHANICAL CHARACTERISTICS A182 F44 254 SMO® W 1.4547
| Material | League | Rm Min (MPa) | Rp 0.2 Min (MPa) | A% min | Hardness max |
|---|---|---|---|---|---|
| A182 F44 254 SMO® | 1.4547 | 650 | 300 | 35 | 270 |
PHYSICAL CHARACTERISTICS A182 F44 254 SMO® W 1.4547
- Bulk density: at 20°C 7.8 g/cm³
- Modulus of elasticity: at 20°C 195,000 N/mm²
- Thermal conductivity: W/m.K. (20°C) – 14
- Specific heat: J/g.K. (20°C) – 500
- Coefficients of linear expansion: 20° – 200°C – 16.0, 20° – 400°C – 17.0
- Electrical resistivity: Ω mm²/m 20°C – 0.85
CORRESPONDENCE AND SPECIFICATIONS A182 F44 254 SMO® W 1.4547
- W.: 1.4547
- UNS: UNS S31254
- AISI: F44 A182
- BRAND: 254 SMO®