Stainless Steel 409
Stainless Steel 409
Cost-effective ferritic stainless steel for automotive exhaust systems, catalytic-converter shells, agricultural equipment and elevated-temperature components.
Representative Properties
- Typical tensile strength: 380 MPa
- Typical yield strength: 170 MPa
- Typical density: 7.80 g/cm³
- Typical hardness: 179 HB
- Standard: ASTM A240
Values are representative for the named grade and condition. Final design and procurement must use certified supplier data and the applicable standard.
Material properties
| Material name | Stainless Steel 409 |
|---|---|
| Type | Stainless Steel |
| Standard code | ASTM A240 |
| Tensile strength (MPa) | 380 |
| Yield strength (MPa) | 170 |
| Fatigue strength (MPa) | 145 |
| Elongation (%) | 20 |
| Hardness (Brinell) | 179 |
| Density (g/cm³) | 7.8 |
| Electrical resistivity (µΩ·in) | 23.6 |
| Thermal conductivity (W/m·K) | 24.9 |
| Melting range (°C) | 1450–1510 |
| Weldability | Good |
| Formability | Good |
| Shear modulus | 77 |
| Industry code | ss_409 |