Austenitic Stainless Steel 654SMO
654SMO is a highly alloyed super austenitic stainless steel comprised of 23% nickel, 25% chromium, and 7% molybdenum. With its austenitic structure, it proves suitable for diverse temperature ranges. Offering corrosion resistance on par with top nickel-based alloys, it boasts excellent local corrosion resistance, pitting resistance, and stress corrosion resistance in challenging environments like seawater, aeration, gaps, and low-speed scouring conditions. It serves as an excellent alternative to both nickel-based and titanium alloys.
Austenitic stainless steel 654SMO / UNS S32654 / W.Nr. 1.4652
Applications of stainless steel 654SMO:
- Refining, chemical equipment.
- Flue gas desulfurization device for thermal power generation, wastewater treatment.
- Atomic power generation, comprehensive utilization of coal, and ocean wave power generation.
- Marine structures in the sea environment, seawater desalination, marine aquaculture, seawater heat exchange.
- Salt production, soy sauce brewing food field.
- Paper industry, high concentration chloride ion environment of various bleaching devices.
- Oil and gas industry equipment.
- Offshore platforms, heat exchangers, underwater equipment, firefighting equipment.
- Chemical processing industry, utensils, and pipeline industry.
- Desalted plants, high-pressure RO plants, and submarine pipelines.
- High-strength, corrosion-resistant mechanical equipment and components.
Normal product forms:
- Round, Square, Hexagon, Flat Bars & Wires
- Seamless / Welded Pipes & Tubes
- Hot & Cold Rolled Plates & Sheets
- Forged Bars
- Forged Flanges
- Butt-Weld Pipe Fittings
- Socket-Weld/Forged Pipe Fittings
- Machined Components
Specifications/Standard: ASTM UNS S32654, EN 1.4652
Chemical Composition:
- Chromium (Cr): 24-25% max
- Nickel (Ni): 21-23% max
- Molybdenum (Mo): 7.0-8.0%
- Copper (Cu): 0.3-0.6%
- Carbon (C): 0.02% max
- Silicon (Si): 0.50% max
- Manganese (Mn): 4.00% max
- Phosphorus (P): 0.03% max
- Sulfur (S): 0.005% max
- Nitrogen (N): 0.55% max
Physical Constants and Thermal Properties
- Density: 7.88 g/cm³
- Melting Range: 2525-2630 ℉
- Thermal Conductivity (W/m-K): 19.0
Mechanical Property:
- Tensile Strength: 621 MPa
- Elastic Modulus: 200 GPa
