Ferritic Stainless Steel 409 plate alloy stabilised using titanium. Stainless Steel 409 plate alloy was designed for use in automotive exhaust systems where higher temperature corrosion resistance than mild steel/galvanised is required. Stainless Steel 409 plate alloy may develop a light patina in use but withstands general environmental corrosion well. Stainless Steel 409 plate alloy is also used in electrical kiosks and distribution boxes.
ASTM A240 Stainless Steel 409 Chemical Composition
| Grade | C | Ni | Si | S | Mn | P | Cr | Ti | |
| SS 409 | min. | – | – | – | – | – | – | 10.5 | 6x C |
| max. | 0.08 | 0.5 | 1.00 | 0.045 | 1.00 | 0.045 | 11.75 | 0.75 |
Features of AISI/SS 409L Sheet
Corrosion resistance
Excellent resistance to the exhaust gas, high temperature, and atmospheric corrosion
Good formability and excellent flexibility
Low cost
Durability
These sheets can easily withstand in high and elevated temperature without getting damaged. However, to prove its quality and durability there are various tests done as per the industrial norms and regulations.
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