409 is a titanium-stabilized ferritic stainless steel offering good corrosion resistance and excellent formability at a lower cost than austenitic grades. It is widely used in automotive exhaust systems and agricultural equipment.
Key Properties
Ferritic Structure: Magnetic with good resistance to stress corrosion cracking.
Stabilization: Titanium addition improves weldability and high-temperature performance.
Cost Efficiency: Lower nickel content makes it more economical than 304/316.
Formability: Good ductility for bending and fabrication.
Common Applications
Automotive: Exhaust manifolds, catalytic converter shells, and mufflers.
Agriculture: Grain handling equipment and fertilizer spreaders.
Construction: Non-structural decorative trim and indoor applications.
Appliances: Washing machine drums and dishwasher interiors.