SAE 303 Stainless Steel (Cold drawn) vs SAE 304 Stainless Steel (Cold-drawn high tensile)
Property comparison of SAE 303 Stainless Steel (Cold drawn) and SAE 304 Stainless Steel (Cold-drawn high tensile), both stainless steel.
| Property | SAE 303 Stainless Steel (Cold drawn) | SAE 304 Stainless Steel (Cold-drawn high tensile) | Difference |
|---|---|---|---|
| Yield strength | 415 MPa | 655 MPa | +58% |
| Tensile strength | 690 MPa | 860 MPa | +25% |
| Elongation | 40 % | 25 % | -38% |
| 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 | 275 HB | +21% |
| 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 (Cold-drawn high tensile) 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
- Cold-drawn high tensile
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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