409L is equivalent to
Corrosion Resistance of 409L Stainless Steel
Similar to 409 but with improved resistance to corrosion in some environments.
Heat Resistance of 409L Stainless Steel
Good oxidation resistance up to 675°C.
Machinability of 409L Stainless Steel
Good weldability with all common methods. Post-weld annealing is recommended.
Welding of 409L Stainless Steel
Good weldability with all common methods. Post-weld annealing is recommended
Hot Working of 409L Stainless Steel
Heat to 1500°F – 1900°F (816°C – 1038°C). Do not work below 1500°F.
Cold Working of 409L Stainless Steel
Cold working is possible but less formable than 304.
Annealing of 409L Stainless Steel
Anneal at 815°C – 845°C followed by air cooling.
Hardening of 409L Stainless Steel
Cannot be hardened by heat treatment but can be solution-treated or annealed to optimize its properties.
Physical Properties of 409L Stainless Steel | ||
Property | Value | Unit |
Density | 0.279 | lb/in³ |
Modulus of Elasticity | 32.0 x 106 | psi |
Coefficient of Thermal Expansion (68-212°F) | 6.5 x 10-6 | /°F |
Thermal Conductivity | 13.2 | Btu/ft·hr·°F |
Specific Heat | 0.11 | Btu/lb·°F |
Electrical Resistivity | 24.8 | Microohm-in |
409L Stainless Steel Mechanical Property | ||||
Property | Yield Strength, min. (ksi) | Tensile Strength, min. (ksi) | Elongation, min. (%) | Hardness, max. (Rb) |
409L | 25 | 55 | 20 | 88 |
Grade | C (Max) | Cr (Max) | Ni (Max) | Mn (Max) | Si (Max) | P (Max) | S (Max) | P (Max) | Nb (Max) | N (Max) |
409L | 0.03 | 10.5-11.7 | 0.5 | 1 | 1 | 0.045 | 0.02 | 0.04 | 8 x (C+N) min / 0.15-0.50 | 0.03 |
409L stainless steel demonstrates exceptional performance in automotive exhaust systems, effectively resisting high temperatures and corrosive environments, ensuring the longevity and safety of the exhaust system.
The low-carbon formulation of 409L stainless steel enhances its weldability, making the welding process easier to control and reducing the likelihood of welding defects. This is particularly important in automotive manufacturing.
Compared to some high-end stainless steel grades, 409L stainless steel is more cost-effective, providing better value for manufacturers and consumers alike.
Type | Width (mm) | Weight (MT) | Thickness (mm) | ||||
409L Coil | 1000, 1219, 1240, 1500 or Customized | 3-10 | 0.15-3.0 |
Type | Width (mm) | Length (mm) | Thickness (mm) | |||||||||
409L Sheets | 1000, 1219, 1240, 1500 or Customized | 2000, 2438, 2500, 3000, 3048 | 0.3-3.0 |
The basic finish options for 201, 304, 304L, 316, 316L, and 430, etc. stainless steel coils and sheets include 2B, BA, No. 1, and No. 4 finishes. Please get in touch with our professional sales team for details on other grades and finishes.
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