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Grade comparison of 409L/S40903 stainless steel: international ISO X2CrTi12; European EN X2CrTi12/1.4512; Japan JIS SUH409L.
The 409L has high temperature resistance, high efficiency engine and exhaust system, and reduced exhaust system thickness to reduce exhaust emissions.
409L is a new environmentally friendly product with low cost, good flexibility, high yield and easy replacement.
409L stainless steel has excellent corrosion resistance, is suitable for extending the life of the car and the weight of the car, and as an environmentally friendly material that can be recycled and reused, major automobile manufacturers such as GM, Ford, Volkswagen, and DaimlerChrysler use stainless steel for exhaust systems 100%.
Chemical composition of 409L/S40903 stainless steel (mass fraction, %)
| Grade | C | Si | Mn | P≤ | S≤ | Cr | Mo | Ni | Other |
| 409L | ≤0.03 | ≤1.00 | ≤1.00 | 0.04 | 0.03 | 10.5-11.7 | ≤0.6 | Ti=6×C%~0.75 |
Mechanical Properties
| Grade | YS(Mpa) ≥ | TS (Mpa) ≥ | El (%) ≥ | Hardness(HV) ≤ |
| 409L | 175 | 360 | 20 | 150 |
Characteristics of 409L/S40903 stainless steel
409L/S40903 steel is ultra-low carbon ferritic stainless steel with good oxidation resistance and good welding performance.
