Automotive 409 Stainless Steel Tubing

SUS 409L Chemical Properties

The main components of SUS 409L include elements such as chromium, iron, titanium and carbon. Among them, the addition of chromium gives it superior oxidation and corrosion resistance, iron provides basic structural support, and titanium improves mechanical properties at high temperatures. The lower carbon content helps improve the weldability of stainless steel.

409L Chemical composition (%)

	C			P	S			N

	===	===	===	===	===	10.50	===	===	6(C+N)	===	===
	0.030	1.00	1.00	0.40	0.020	11.70	0.50	0.030	0.5	0.17	===

 

SUS 409L mechanical properties

SUS 409L has superior mechanical properties, including high strength, high yield strength and excellent cold workability. Its tight structure makes it stable in high temperature and high pressure environments. This makes SUS 409L suitable for manufacturing structural parts that require high strength and heat resistance, such as components in automobile exhaust systems.