409L stainless steel is a ferritic, weldable grade of stainless steel grade, 409L stainless steel has excellent corrosion resistance, high-temperature resistance, can realize high-efficiency engine and exhaust system, and reduce the thickness of the exhaust system, can reduce the emission of exhaust gas. Low cost, flexible, high rate of formation, easy to replace.
Grade 409L (EN 1.4512) is composed of 10.5 – 12.5% chromium, a low composition of carbon and nitrogen, and an adjunction of titanium, these compositions make grade 409L stainless steel have good corrosion resistance, weldability and formability. Due to the lower chromium, Grade 409L was another low-cost option for corrosion-resistant stainless steel.
409L Stainless Steel Composition
| Grade | Standard | 409L Chemical Composition | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | Cr | Ni | P | S | Mo | Others | ||
| ≤ % | ≤ % | % | % | % | ≤ % | ≤ % | ≤ % | % | ||
| 409L | ASTM A240 | 0.03 | 1.0 | 2.0 | 10.5 – 12.5 | 0.6 | 0.04 | 0.015 | – | Ti≤ 0.65 |
| 1.4512 | EN 10088-2 | 0.03 | 1.0 | 1.0 | 10.5 – 11.5 | 0.6 | 0.04 | 0.03 | – | Ti≤ 0.65 |
409L Stainless Steel Mechanical Properties
| Grade | Standard | 409L Mechanical Properties | ||||
|---|---|---|---|---|---|---|
| Tensile Strength | Yield Strength 0.2% | Elongation >% | Hardness | |||
| (MPa) ≥ | (MPa) ≥ | HRB ≤ | HB ≤ | |||
| 409L | ASTM A240 | 380 | 210 | 25 | – | 175 |
| 1.4512 | EN 10088-2 | 360 | 175 | 25 | – | – |
409L Stainless Steel Equivalent
- JIS SUS409L
- UNS S40900
- EN X2CrTi12
- BS 409S
- DIN 1.4512
409L Stainless Steel Properties
- High Temperature Resistance: 409L stainless steel excels in high-temperature environments and can withstand temperatures ranging from -20°C to 650°C.
- Corrosion Resistance: With excellent corrosion resistance, it is particularly suitable for use in automotive exhaust systems to cope with high-temperature, high-speed combustion exhaust gases.
- Environmental protection: 409L stainless steel is a recyclable and environmentally friendly material, which helps to reduce waste and lower environmental pollution.
- Mechanical Properties: 409L stainless steel has appropriate mechanical properties, including tensile strength, ductility, and hardness, making it ideal for use in the manufacture of exhaust systems.
Applications
Stainless steel 409L is one of the most widely used chromium-nickel stainless steels, with good corrosion resistance, heat resistance, low-temperature strength and mechanical properties. It is resistant to corrosion in the atmosphere, and in the case of industrial atmospheres or heavily polluted areas, requires prompt cleaning to avoid corrosion. Suitable for food processing, storage and transportation. Good processability and weldability. Plate heat exchangers, bellows, household goods, building materials, chemical and food industries.
