409 Stainless Steel Plate Manufacturer & Supplier
409 is a titanium-stabilised 11% chromium ferritic — the automotive exhaust grade. It resists oxidation and exhaust-gas corrosion at a fraction of the cost of austenitic stainless, and it is magnetic and far cheaper to form.
UNS: S40900 | Category: Ferritic Stainless Steel
Size Range
Outer Diameter: Thickness 1.5 - 6 mm · Width 1000-3000 mm · Length 2000-12000 mm
Wall Thickness: 1.5 - 6 mm
Chemical Composition (%)
| C | Si | Mn | P | S | Cr | Ti |
|---|---|---|---|---|---|---|
| 0.030 max | 1.00 max | 1.00 max | 0.040 max | 0.020 max | 10.50-11.70 | 6 x C min, 0.50 max |
Mechanical Properties
- Yield Strength Rp0.2
- 205 MPa min
- Tensile Strength Rm
- 380 MPa min
- Elongation A5
- 20% min
- Hardness
- 88 HRB max
- Max Service Temperature
- 705 °C intermittent
Applicable Standards
- ASTM A240 / ASME SA240
- ASTM A480
- EN 10088-2
- JIS G4304 / G4305
- EN 10204 3.1 certification
Applications
- Automotive exhaust systems
- Silencers & catalytic converter shells
- Agricultural equipment panels
- Heat exchanger shells (mild duty)
- Transformer tank panels
Industries Served
- Automotive
- Agriculture
- Power & Energy
Equivalent Grades
- EN
- 1.4512 / X2CrTi12
- JIS
- SUH 409
- UNS
- S40900