654 SMO Super Austenitic Stainless Steel
Introduction
Overview of 654 SMO Super Austenitic Stainless Steel
654SMO® stainless steel is a super austenitic stainless steel which contains 23% nickel, 25% chromium and 7% molybdenum.
Its corrosion resistance is equivalent to that of the best nickel-base alloys. 654SMO® is a registered trademark of Outokumpu OYJ.
The nitrogen content of 654SMO® stainless steel is twice as high as 254SMO® grade, and its strength is higher than 904L stainless steel and 254SMO® super austenitic stainless steel.
654SMO® super austenitic stainless steel has very good local corrosion resistance.
It has good pitting corrosion resistance and good stress corrosion resistance under the conditions of sea water, aeration, crevices, and low-speed erosion.
Futures of 654 SMO Super Austenitic Stainless Steel
Good local corrosion resistance, good pitting resistance and good stress corrosion resistance under seawater, aeration, gap and low speed scouring conditions.
It can be used as a good substitute to nickel-based alloys and titanium alloys.
When it comes to high-temperature resistance or corrosion resistance, it is also superior to 904L and 254SMO stainless steel materials.
654 SMO Super Austenitic Stainless Steel Applications
- Oil refining, chemical equipment
- Thermal power generation flue gas desulfurization device, wastewater treatment
- Nuclear power generation, comprehensive utilization of coal, power generation energy field
- Structures in the marine environment, seawater heat exchange industry
- Paper manufacturing industry, various bleaching devices
- Offshore platforms, heat exchangers, underwater equipment
- Chemical processing industry, pipeline industry
- High-strength, corrosion-resistant mechanical equipment and components
654 SMO Super Austenitic Stainless Steel Tags
- Grade 654 SMO
- Type 654 SMO
- Inox 654 SMO
- AISI 654 SMO
- 1.4652
- UNS S32654
Quality Products
Technical Data
| 654 SMO Stainless Steel Standards Comparison Table | ||||||||
| STS | USA | UNS | CHINA | EURONORM | RUSSIA | SWEDISH | JAPANESE | |
| GRADE | AISI/ASTM | NO | GB | NO | NAME | GOST | SS | JIS |
| 654 SMO | 654 SMO | S32654 | – | 1.4652 | – | – | – | – |
| Grade | Standard | C | Si | Mn | P | S | Cr | Ni | Mo |
| 654 SMO/UNS S32654 | ASTM | ≤0.02 | ≤0.05 | ≤4.00 | ≤0.030 | ≤0.005 | 23.00-25.00 | 21.00-23.00 | 7-8 |
| Properties | Metric | Imperial |
| Tensile Strength | 680 MPa | 98600 psi |
| Yield Strength | 300 MPa | 43500 psi |
| Modulus of Elasticity | 195 GPa | 28300 ksi |
| Elongation at break | 50% | 50% |
| Hardness (Brinell) | 210 | 210 |
Related Resources
Difference Between 254SMO and 654SMO Stainless Steel Strips
254SMO stainless steel strip and 654SMO stainless steel strip are super austenitic stainless steels. Both of them have their features. But which one should you choose? While both are excellent options, you may prefer one over the other. To select the right option, learn more about what makes each steel unique. Let’s keep reading.
