7049 vs 7075
Property comparison of 7049 and 7075, both aluminum alloy.
| Property | 7049 | 7075 | Difference |
|---|---|---|---|
| Yield strength | 448 MPa | 103 MPa | -77% |
| Tensile strength | 517 MPa | 228 MPa | -56% |
| Elongation | 12 % | 17 % | +42% |
| 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 | 135 HB | 60 HB | -56% |
| Thermal conductivity | 130 W/m·K | 130 W/m·K | 0% |
| Specific heat | 860 J/kg·K | 860 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.000024 1/K | 0.000024 1/K | 0% |
| Melting point | 477 °C | 477 °C | 0% |
Difference is 7075 relative to 7049. 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 7xxx aluminum alloys
7xxx aluminum alloys are alloyed with zinc and reach the highest strengths in the wrought family. Weldability is poor and corrosion resistance trails 5xxx and 6xxx. 7075 is the aerospace standard for highly loaded structure; 7050 trades a small amount of strength for better fracture toughness.
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