Materials / Compare
Aluminum 7050-T7451 vs. Copper C110
Compare Aluminum 7050-T7451 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 | 469MPasourcetypical, longitudinal, 0.2% offset | 69MPasourcetypical, 0.5% extension under load |
| Ultimate tensile strength | 524MPasourcetypical, longitudinal | 221MPasourcetypical |
| Elongation at break | 11%sourcetypical, longitudinal | 55%sourcetypical, 1 in. rod |
| Young's modulus (stiffness) | 70.3GPasourcetypical | 117GPasourcetypical1.67x stiffer |
| Density | 2,830kg/m³sourcenominal3.15x lighter | 8,913kg/m³sourcenominal |
| Strength to weight | 166kN·m/kg21.4x higher | 7.74kN·m/kg |
| Stiffness to weight | 24.8MN·m/kg1.89x 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 | 26.4GPa | 43.7GPa1.65x stiffer in shear |
| Bulk modulus | 68.9GPa | 122GPa |
| Speed of sound | 4,984m/s | 3,626m/s |
| Thermal | ||
| Thermal conductivity | 157W/m·Ksourcetypical, 20 °C | 391W/m·Ksourcetypical, 20 °C2.49x more heat through a fin |
| Thermal expansion | 23.5µm/m·Ksourcetypical, mean 20-100 °C | 16.9µm/m·Ksourcetypical, mean 20-100 °C39% less |
| 100 mm part over a 50 °C swing | 118µm growth | 84.5µm growth39% less |
| Specific heat | 860J/kg·Ksourcetypical, at 100 °C | 385J/kg·Ksourcetypical, 20 °C |
| Heats up and cools (diffusivity) | 64.5mm²/s | 114mm²/s1.77x faster |
| Thermal shock resistance | 29,862W/m3.32x more resistant | 8,992W/m |
| Melting point | 524–635°Csourcemelting range | 1,065–1,083°Csourcesolidus-liquidus |
| Values for | 7050-T7451 plate, Kaiser Aluminum sheet, coil & plate typical datasheet (longitudinal); 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 7050-T7451 stronger than Copper C110?
Aluminum 7050-T7451 is stronger: its yield strength is 469 MPa against 69 MPa for Copper C110 (6.8x).
Which is lighter, Aluminum 7050-T7451 or Copper C110?
Aluminum 7050-T7451 is lighter: 2,830 kg/m³ against 8,913 kg/m³ for Copper C110.
Which is stiffer, Aluminum 7050-T7451 or Copper C110?
Copper C110 is stiffer: Young's modulus 117 GPa against 70.3 GPa for Aluminum 7050-T7451, so the same part in Copper C110 deflects less under the same load.
Which is lighter for the same job, Aluminum 7050-T7451 or Copper C110?
For the same stiffness or strength: Aluminum 7050-T7451 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 7050-T7451 | Copper C110 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 1.89x heavier |
| Stiff beam (bending) | lighter | 2.44x heavier |
| Stiff panel or plate | lighter | 2.66x heavier |
| Strong rod or tie | lighter | 21.4x heavier |
| Strong beam | lighter | 11.3x heavier |
| Strong panel or plate | lighter | 8.21x 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 7050-T7451 or Copper C110?
Copper C110 conducts heat better: 391 W/m·K against 157 W/m·K for Aluminum 7050-T7451.
Which expands less with temperature?
Copper C110 expands less: 16.9 µm/m·K against 23.5 µm/m·K for Aluminum 7050-T7451.