SAE 303 Stainless Steel (Cold drawn) vs SAE 304 Stainless Steel (Annealed and cold drawn)
Property comparison of SAE 303 Stainless Steel (Cold drawn) and SAE 304 Stainless Steel (Annealed and cold drawn), both stainless steel.
| Property | SAE 303 Stainless Steel (Cold drawn) | SAE 304 Stainless Steel (Annealed and cold drawn) | Difference |
|---|---|---|---|
| Yield strength | 415 MPa | 415 MPa | 0% |
| Tensile strength | 690 MPa | 690 MPa | 0% |
| Elongation | 40 % | 45 % | +13% |
| Elastic modulus | 193,000 MPa | 193,000 MPa | 0% |
| Shear modulus | 74,231 MPa | 74,231 MPa | 0% |
| Poisson ratio | 0.3 | 0.3 | 0% |
| Density | 7,850 kg/m³ | 7,850 kg/m³ | 0% |
| Brinell hardness | 228 HB | 212 HB | -7% |
| Thermal conductivity | 15.1 W/m·K | 15.1 W/m·K | 0% |
| Specific heat | 460 J/kg·K | 460 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.000016 1/K | 0.000016 1/K | 0% |
| Melting point | 1,400 °C | 1,400 °C | 0% |
Difference is SAE 304 Stainless Steel (Annealed and cold drawn) relative to SAE 303 Stainless Steel (Cold drawn). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- 303
- standard
- SAE
- heat treatment
- Cold drawn
- grade
- 304
- standard
- SAE
- heat treatment
- Annealed and cold drawn
About 300-series stainless steels
Austenitic stainless steels gain corrosion resistance from chromium and nickel and are non-magnetic in the annealed condition. 304 covers most general-purpose work; 316 adds molybdenum for chloride and seawater service. They cannot be hardened by heat treatment and rely on cold work for higher strength.
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