What is Stainless Steel 347 Washer?

Stainless Steel 347 Washers are columbium-stabilized austenitic stainless steel components designed to resist intergranular corrosion even after prolonged exposure to high temperatures. They offer excellent heat resistance, making them suitable for environments up to 870°C. Stainless Steel 347 is preferred over 304/321 in applications involving continuous heat exposure, welding, and corrosive atmospheres.

Applications of Stainless Steel 347 Washer

• High-Temperature Equipment – Used in furnaces, boilers, and thermal processing units.
• Chemical Processing Systems – Resistant to strong acids, chemicals, and oxidizing conditions.
• Petrochemical and Refinery Equipment – Handles hot hydrocarbons, exhaust, and corrosive gases.
• Power Generation – Used in turbine casings, heat exchangers, and high-pressure systems.
• Automotive Exhaust Applications – Ideal for high-temperature exhaust and emission components.
• Welded Assemblies – Excellent for structures subject to heat and pressure after welding.

Common Uses of Stainless Steel 347 Washer

• Used in high-temperature bolted connections to distribute load and prevent loosening.
• Provides corrosion and oxidation resistance in elevated heat environments.
• Ensures assembly stability in machinery exposed to temperature cycling.
• Common in aerospace, power plants, and industrial furnace systems.
• Used in maintenance and repair operations requiring high thermal durability.
• Ideal for boilers, heaters, processing tubes, and exhaust ducts.