SUS321 steel, an austenitic stainless steel under the JIS G4304/4312 standard, exhibits excellent intergranular corrosion resistance and high-temperature strength due to the addition of titanium (Ti). It finds widespread applications across various industrial sectors. Below are its primary uses:
Petrochemical Industry
Applications: Used in the manufacturing of pipelines, valves, reactors, heat exchangers, storage tanks, and other equipment.
Reasons: SUS321 steel performs exceptionally well in high-temperature and corrosive media, offering resistance to erosion by various organic and inorganic acids, particularly demonstrating good corrosion resistance in oxidative environments.
Aerospace Sector
Applications: Employed in the production of aircraft components, engine exhaust pipes, combustion chambers, and other high-temperature parts.
Reasons: SUS321 steel boasts excellent high-temperature strength and creep resistance, enabling long-term stable operation under high-temperature conditions and meeting the stringent material performance requirements of the aerospace industry.
Energy Industry
Applications: Utilized in the manufacturing of burners, boiler components, heat exchangers, and other equipment in high-temperature environments such as coal-fired power plants and nuclear power stations.
Reasons: SUS321 steel maintains good stability and corrosion resistance at high temperatures, withstanding the erosion of high-temperature steam and corrosive media.
Chemical Equipment Manufacturing
Applications: Used in the fabrication of reaction vessels, columns, pipelines, pump bodies, and other equipment.
Reasons: SUS321 steel can resist the erosion of various corrosive chemical media, particularly excelling under high-temperature and high-pressure conditions.
Food Processing Industry
Applications: Employed in the manufacturing of food processing equipment, such as storage tanks, pipelines, and conveyor belts.
Reasons: SUS321 steel complies with food safety standards, does not release harmful substances, and is easy to clean and sterilize.
Marine Engineering
Applications: Used in the manufacturing of offshore platforms, ship components, seawater desalination equipment, etc.
Reasons: SUS321 steel possesses good seawater corrosion resistance, enabling long-term use in marine environments.
Automotive Manufacturing
Applications: Utilized in the production of automotive exhaust systems, turbochargers, and other high-temperature components.
Reasons: SUS321 steel exhibits good mechanical properties and corrosion resistance at high temperatures, withstanding the high-temperature gases and corrosive media emitted by engines.
Heat Treatment and Welding Fields
Applications: Suitable for parts requiring high-temperature heat treatment or welding, such as heat treatment furnace components, welded structural parts, etc.
Reasons: SUS321 steel maintains good stability at high temperatures and is less prone to intergranular corrosion after welding, making it suitable for welding applications in high-temperature environments.
