2017 vs 2025
Property comparison of 2017 and 2025, both aluminum alloy.
| Property | 2017 | 2025 | Difference |
|---|---|---|---|
| Yield strength | 69 MPa | 255 MPa | +270% |
| Tensile strength | 179 MPa | 400 MPa | +123% |
| Elongation | 22 % | 19 % | -14% |
| Elastic modulus | 73,000 MPa | 73,000 MPa | 0% |
| Shear modulus | 26,000 MPa | 26,000 MPa | 0% |
| Poisson ratio | 0.33 | 0.33 | 0% |
| Density | 2,700 kg/m³ | 2,700 kg/m³ | 0% |
| Brinell hardness | 45 HB | 110 HB | +144% |
| Thermal conductivity | 151 W/m·K | 151 W/m·K | 0% |
| Specific heat | 875 J/kg·K | 880 J/kg·K | +1% |
| Coefficient of thermal expansion | 0.000023 1/K | 0.000023 1/K | 0% |
| Melting point | 510 °C | 510 °C | 0% |
Difference is 2025 relative to 2017. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- standard
- ANSI
- heat treatment
- Wrought
- standard
- ANSI
- heat treatment
- Wrought
About 2xxx aluminum alloys
2xxx aluminum alloys are alloyed with copper. They reach the highest strengths in the wrought aluminum family but corrode faster than 5xxx or 6xxx and are difficult to weld. 2024 is the aerospace standard for skin and structure; 2014 is used for forgings.
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