405 is a ferritic stainless steel with aluminum addition for improved weldability compared to other ferritic grades. It offers moderate corrosion resistance and is used in specialized heat-resisting applications.
Key Properties
Weldability: Aluminum addition improves weldability over standard ferritic grades.
Corrosion: Moderate resistance to mild atmospheres and fresh water.
Heat Resistance: Good oxidation resistance at elevated temperatures.
Non-Hardenable: Cannot be hardened by heat treatment.
Common Applications
Heat Exchangers: Low-pressure heat transfer equipment supports.
Automotive: Non-critical exhaust components and brackets.
Chemical: Mild acid handling equipment and storage tank internals.
Architecture: Non-structural decorative applications and indoor trim.