Materials / Compare
Aluminum 2024-T351 vs. Aluminum 7075-T6
Compare Aluminum 2024-T351 vs. Aluminum 7075-T6 strength, stiffness, weight and thermal properties.
| Try it on a partA bracket to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | 324MPasourcetypical, 0.2% offset, .500 in dia specimen | 503MPasourcetypical, 0.2% offset, .500 in dia specimen1.55x stronger |
| Ultimate tensile strength | 469MPasourcetypical | 572MPasourcetypical22% stronger |
| Elongation at break | 19%sourcetypical, in 4D1.73x more ductile | 11%sourcetypical, in 4D |
| Young's modulus (stiffness) | 73.1GPasourcetypical | 71GPasourcetypical |
| Density | 2,770kg/m³sourcenominal | 2,800kg/m³sourcenominal |
| Strength to weight | 117kN·m/kg | 180kN·m/kg1.54x higher |
| Stiffness to weight | 26.4MN·m/kg4% higher | 25.4MN·m/kg |
| Poisson's ratio | 0.33sourcetypical (handbook physical constant), all tempers | 0.33sourcetypical (handbook physical constant) |
| Shear modulus | 27.5GPa3% stiffer in shear | 26.7GPa |
| Bulk modulus | 71.7GPa | 69.6GPa |
| Speed of sound | 5,137m/s | 5,036m/s |
| Thermal | ||
| Thermal conductivity | 120W/m·Ksourcetypical, 20 °C | 130W/m·Ksourcetypical, 20 °C, T651 |
| Thermal expansion | 22.9µm/m·Ksourcetypical, mean 20-100 °C | 23.4µm/m·Ksourcetypical, mean 20-100 °C |
| 100 mm part over a 50 °C swing | 115µm growth2% less | 117µm growth |
| Specific heat | 875J/kg·Ksourcetypical, at 100 °C | 960J/kg·Ksourcetypical, at 100 °C |
| Heats up and cools (diffusivity) | 49.5mm²/s2% faster | 48.4mm²/s |
| Thermal shock resistance | 15,561W/m | 26,370W/m1.69x more resistant |
| Melting point | 502–638°Csourcemelting range | 532–635°Csourcemelting range |
| Values for | 2024-T4/T351, Kaiser Aluminum sheet, coil & plate typical datasheet; Poisson from MIL-HDBK-5J | 7075-T6/T651, Kaiser Aluminum rod & bar (mechanical) and sheet/coil/plate (physical) typical datasheets; Poisson from MIL-HDBK-5J |
Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
Questions
Is Aluminum 2024-T351 stronger than Aluminum 7075-T6?
Aluminum 7075-T6 is stronger: its yield strength is 503 MPa against 324 MPa for Aluminum 2024-T351 (1.55x).
Which is lighter, Aluminum 2024-T351 or Aluminum 7075-T6?
Aluminum 2024-T351 is lighter: 2,770 kg/m³ against 2,800 kg/m³ for Aluminum 7075-T6.
Which is stiffer, Aluminum 2024-T351 or Aluminum 7075-T6?
Aluminum 2024-T351 is stiffer: Young's modulus 73.1 GPa against 71 GPa for Aluminum 7075-T6, so the same part in Aluminum 2024-T351 deflects less under the same load.
Which is lighter for the same job, Aluminum 2024-T351 or Aluminum 7075-T6?
For the same stiffness or strength: Aluminum 2024-T351 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate; Aluminum 7075-T6 is lighter for a strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Aluminum 2024-T351 | Aluminum 7075-T6 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 4% heavier |
| Stiff beam (bending) | lighter | 3% heavier |
| Stiff panel or plate | lighter | 2% heavier |
| Strong rod or tie | 1.54x heavier | lighter |
| Strong beam | 33% heavier | lighter |
| Strong panel or plate | 23% heavier | lighter |
For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).
Which is more ductile, Aluminum 2024-T351 or Aluminum 7075-T6?
Aluminum 2024-T351 stretches further before it breaks: 19% elongation at break against 11% for Aluminum 7075-T6.
Which conducts heat better, Aluminum 2024-T351 or Aluminum 7075-T6?
Aluminum 7075-T6 conducts heat better: 130 W/m·K against 120 W/m·K for Aluminum 2024-T351.
Which expands less with temperature?
Aluminum 2024-T351 expands less: 22.9 µm/m·K against 23.4 µm/m·K for Aluminum 7075-T6.