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654 SMO (Super Austenitic Stainless Steel) plate is a high-performance alloy renowned for its exceptional corrosion resistance and mechanical properties. Here’s a detailed introduction:
Chemical Composition
654 SMO contains a unique blend of elements:
High chromium (24–26%) and molybdenum (7–8%) for superior resistance to pitting and crevice corrosion.
Nickel (23–25%) to enhance ductility and stability.
Copper (0.5–1.0%) and nitrogen (0.4–0.5%) to improve strength and resistance to chloride-induced stress corrosion cracking (SCC).
Low carbon content (<0.02%) to prevent sensitization.
Key Properties
Corrosion Resistance:
Highly resistant to harsh environments, including seawater, chlorides, and acids (e.g., sulfuric and phosphoric acids).
Offers a Critical Pitting Temperature (CPT) exceeding 60°C, far higher than standard stainless steels like 316L.
Mechanical Strength:
Yield strength ≥ 430 MPa and tensile strength ≥ 700 MPa, making it suitable for high-pressure applications.
Excellent ductility and impact resistance even at low temperatures.
Heat Resistance:
Maintains stability in temperatures up to 300°C, with minimal carbide precipitation.
Manufacturing and Fabrication
Produced via vacuum induction melting (VIM) and electroslag remelting (ESR) for purity.
Machinable with proper tools and lubrication, though its high strength may require increased cutting forces.
Weldable using techniques like TIG or MIG, with matching filler metals (e.g., ERNiCrMo-3) to maintain corrosion resistance.
Applications
Marine Engineering: Offshore platforms, seawater pipelines, and desalination equipment.
Chemical/Petrochemical Industry: Reactors, heat exchangers, and vessels handling corrosive media.
Pharmaceuticals and Food Processing: Equipment requiring high hygiene and corrosion resistance.
Oil and Gas: Subsea components and high-chloride environments.
Standards and Specifications
Complies with ASTM A240, EN 10088-2, and ASME SA-240.
Common designations: UNS S32654, 1.4652.
Advantages Over Other Alloys
Outperforms 904L and 254 SMO in extreme chloride conditions.
Reduces maintenance and replacement costs in aggressive environments.
Suitable for applications where weight and strength are critical (e.g., lightweight structures).
654 SMO plate is a premium material chosen for projects demanding unparalleled corrosion resistance and durability in the most challenging environments. Its unique composition makes it a staple in industries where failure due to corrosion is not an option.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...
