254 SMO (UNS S31254)
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Features
- Thanks to its low carbon content 254SMO alloy minimizes the danger of carbide precipitation
- This alloy can pass the STRAUSS TEST even after undergoing 1 hour of sensitization within a temperature range of 600℃-1000℃. It avoids intergranular corrosion during welding processes.
- 254SMO demonstrates strong corrosion resistance in pure sulfuric acid
- Under slightly higher temperatures 254SMO can maintain high crevice corrosion resistance properties
- Mechanical strength higher than other austenitic stainless steels
Chemical Analysis
| C | Cr | Ni | Mo | Si | Mn | P | S | Cu | N | |
| 254 SMO | ≤0.02 | 19.5-20.5 | 17.5-18.5 | 6-6.5 | ≤0.8 | ≤1 | ≤0. 03 | ≤0.01 | ≤0.5-1 | 0.18-0.22 |
Physical Properties
| Density | 8.24G/CM3 |
| Melting Range | 1320°C-1390℃ |
The Min. Mechanical Properties under Room Temperature
| Alloy Form | Tensile Strength | Yield Strength | Elongation | Brinell Hardness |
| RM N/MM2 | RP0.2 N/MM2 | A5% | HB | |
| Sheet and Coil | ≥690 | ≥310 | ≥35 | ≤223 |
| Sheet and Coil | ≥655 | ≥310 | ≥35 | ≤223 |
- Applications
- Petroleum, petrochemical devices, such as corrugated pipe
- Paper pulp, bleaching equipment
- Flue-gas desulfurization equipment in power plants
- Sea water treatment, such as desalination equipment
- Heat exchangers, especially for working environments with chlorine ions present
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