Stainless Steel 321
Stainless Steel 321
Titanium-stabilized stainless steel for aircraft exhausts, expansion joints, furnace components and welded equipment exposed to elevated temperatures.
Representative Properties
- Typical tensile strength: 515 MPa
- Typical yield strength: 205 MPa
- Typical density: 8.00 g/cm³
- Typical hardness: 187 HB
- Standard: ASTM A240 / ASTM A276
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 321 |
|---|---|
| Type | Stainless Steel |
| Standard code | ASTM A240 / ASTM A276 |
| Tensile strength (MPa) | 515 |
| Yield strength (MPa) | 205 |
| Fatigue strength (MPa) | 205 |
| Elongation (%) | 40 |
| Hardness (Brinell) | 187 |
| Density (g/cm³) | 8 |
| Electrical resistivity (µΩ·in) | 72 |
| Thermal conductivity (W/m·K) | 16.1 |
| Melting range (°C) | 1400–1425 |
| Weldability | Excellent |
| Formability | Good |
| Shear modulus | 77 |
| Industry code | ss_321 |