SAE 330 Stainless Steel (Annealed bar) vs SAE 440C Stainless Steel (Hardened and tempered at 315 °C)
Property comparison of SAE 330 Stainless Steel (Annealed bar) and SAE 440C Stainless Steel (Hardened and tempered at 315 °C), both stainless steel.
| Property | SAE 330 Stainless Steel (Annealed bar) | SAE 440C Stainless Steel (Hardened and tempered at 315 °C) | Difference |
|---|---|---|---|
| Yield strength | 290 MPa | 1,900 MPa | +555% |
| Tensile strength | 585 MPa | 1,970 MPa | +237% |
| Elongation | 45 % | 2 % | -96% |
| 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 | 147 HB | 580 HB | +295% |
| Thermal conductivity | 15.1 W/m·K | 24.7 W/m·K | +64% |
| Specific heat | 500 J/kg·K | 460 J/kg·K | -8% |
| Coefficient of thermal expansion | 0.000016 1/K | 0.00001 1/K | -36% |
| Melting point | 1,400 °C | 1,450 °C | +4% |
Difference is SAE 440C Stainless Steel (Hardened and tempered at 315 °C) relative to SAE 330 Stainless Steel (Annealed bar). 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
- 330
- standard
- SAE
- heat treatment
- Annealed bar
- grade
- 440C
- standard
- SAE
- heat treatment
- Hardened and tempered at 315 °C
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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