400 series stainless steel pipe tubes : Grade 409L Stainless Steel Pipe Tubes Production Feature

Grade 409L (UNS S40900, EN 1.4512) is a kind of stabile version of 409, composed with proper chromium, low composition of carbon and nitrogen and adjunction of titanium, all composition appropriate make Grade 409L products have some properties, corrosion resistance, weldability and formability. Due to the lower chromium, Grade 409L was another low cost option for corrosion resistant stainless steel.

Grade 409L has a good combination of heat resistance and corrosion resistance, can be ideal for non- or lightly corrosive environments or applications. It has excellent oxidation resistance in high temperatures and good welding performance, which can be used for automotive exhaust pipes or oil equipment.

PROPERTIES

Grade 409L may be considered for a wide variety of applications where one or more of the following properties are important:

Corrosion resistance
Resistance to oxidation
Excellent resistance to high temperature, exhaust gas and atmospheric corrosion
Heat Treatment
Suitable for welding
Good flexibility and excellent formability
Low costs

CHEMICAL COMPOSITION AND PHYSICAL PROPERTIES FOR 409L

APPLICATION

Grade 409L has excellent oxidation resistance in high temperatures, and composed by extra-low carbon Ferritic structure, so it has excellent in workability compared with conventional similar grades. Due to this properties, the typical applications for Grade 409L include:

Automotive exhaust systems (manifolds, exhaust pipes, converters, front and tail pipes, converters, mufflers and other components)
Heat exchangers
Catalytic converter systems
Culverts
Home heating systems
Automotive thermostats
Fuel filters
Farm equipment components
Electrical transformer cases