SUS409L Stainless Steel Sheet - 2B/2D Finish
SUS409L is a cost-effective ferritic stainless steel widely recognized as the "muffler grade" due to its predominant use in automotive exhaust systems. This grade offers excellent value while meeting demanding automotive requirements.
Chemical Composition
| Grade |
C |
Cr |
Ni |
Ti |
| 409 |
0.03 |
10.5~11.7 |
0.50 |
8(C+N) min. 0.15~0.50 |
Key Characteristics
- Basic corrosion and oxidation resistance
- Optimized composition for superior formability
- Weldable in thin sections (fully ferritic structure)
- Cost-effective with stable pricing due to low alloy content
Automotive Applications
Automotive exhaust systems operate under extreme conditions including high temperatures at the manifold, sulphuric acid condensate, and de-icing salt exposure. Despite these harsh environments, the 11% chromium 409 grade has proven reliable for decades. The material's exceptional formability allows for bending, expanding, and pressing into complex shapes required for exhaust components.
Additional Applications
- Heat exchangers
- Gas boilers
- Fuel filters
Product Images