Materials / Compare
Aluminum 7075-T6 vs. Copper C110
Compare Aluminum 7075-T6 vs. Copper C110 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 | 503MPasourcetypical, 0.2% offset, .500 in dia specimen | 69MPasourcetypical, 0.5% extension under load |
| Ultimate tensile strength | 572MPasourcetypical2.59x stronger | 221MPasourcetypical |
| Elongation at break | 11%sourcetypical, in 4D | 55%sourcetypical, 1 in. rod |
| Young's modulus (stiffness) | 71GPasourcetypical | 117GPasourcetypical1.65x stiffer |
| Density | 2,800kg/m³sourcenominal3.18x lighter | 8,913kg/m³sourcenominal |
| Strength to weight | 180kN·m/kg23.2x higher | 7.74kN·m/kg |
| Stiffness to weight | 25.4MN·m/kg1.93x higher | 13.1MN·m/kg |
| Poisson's ratio | 0.33sourcetypical (handbook physical constant) | 0.34sourcereference value at room temperature (Wieland-K32 = Cu-ETP = C11000, rolled products) |
| Shear modulus | 26.7GPa | 43.7GPa1.64x stiffer in shear |
| Bulk modulus | 69.6GPa | 122GPa |
| Speed of sound | 5,036m/s | 3,626m/s |
| Thermal | ||
| Thermal conductivity | 130W/m·Ksourcetypical, 20 °C, T651 | 391W/m·Ksourcetypical, 20 °C |
| Thermal expansion | 23.4µm/m·Ksourcetypical, mean 20-100 °C | 16.9µm/m·Ksourcetypical, mean 20-100 °C38% less |
| 100 mm part over a 50 °C swing | 117µm growth | 84.5µm growth38% less |
| Specific heat | 960J/kg·Ksourcetypical, at 100 °C | 385J/kg·Ksourcetypical, 20 °C |
| Heats up and cools (diffusivity) | 48.4mm²/s | 114mm²/s2.36x faster |
| Thermal shock resistance | 26,370W/m2.93x more resistant | 8,992W/m |
| Melting point | 532–635°Csourcemelting range | 1,065–1,083°Csourcesolidus-liquidus |
| Values for | 7075-T6/T651, Kaiser Aluminum rod & bar (mechanical) and sheet/coil/plate (physical) typical datasheets; Poisson from MIL-HDBK-5J | C11000 ETP copper, annealed to 0.050 mm grain size (OS050), 1 in. rod, copper.org typical values |
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 7075-T6 stronger than Copper C110?
Aluminum 7075-T6 is stronger: its yield strength is 503 MPa against 69 MPa for Copper C110 (7.29x).
Which is lighter, Aluminum 7075-T6 or Copper C110?
Aluminum 7075-T6 is lighter: 2,800 kg/m³ against 8,913 kg/m³ for Copper C110.
Which is stiffer, Aluminum 7075-T6 or Copper C110?
Copper C110 is stiffer: Young's modulus 117 GPa against 71 GPa for Aluminum 7075-T6, so the same part in Copper C110 deflects less under the same load.
Which is lighter for the same job, Aluminum 7075-T6 or Copper C110?
For the same stiffness or strength: Aluminum 7075-T6 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Aluminum 7075-T6 | Copper C110 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 1.93x heavier |
| Stiff beam (bending) | lighter | 2.48x heavier |
| Stiff panel or plate | lighter | 2.69x heavier |
| Strong rod or tie | lighter | 23.2x heavier |
| Strong beam | lighter | 12x heavier |
| Strong panel or plate | lighter | 8.59x heavier |
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 conducts heat better, Aluminum 7075-T6 or Copper C110?
Copper C110 conducts heat better: 391 W/m·K against 130 W/m·K for Aluminum 7075-T6.
Which expands less with temperature?
Copper C110 expands less: 16.9 µm/m·K against 23.4 µm/m·K for Aluminum 7075-T6.