A380 aluminium high-pressure die-casting alloy, typical properties; Rheocast Company (aluminium die caster, Germantown WI) A380 alloy data page.
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 A380 stronger than Copper C110?
Aluminum A380 is stronger: its yield strength is 160 MPa against 69 MPa for Copper C110 (2.32x).
Which is lighter, Aluminum A380 or Copper C110?
Aluminum A380 is lighter: 2,713 kg/m³ against 8,913 kg/m³ for Copper C110.
Which is stiffer, Aluminum A380 or Copper C110?
Copper C110 is stiffer: Young's modulus 117 GPa against 71 GPa for Aluminum A380, so the same part in Copper C110 deflects less under the same load.
Which is lighter for the same job, Aluminum A380 or Copper C110?
For the same stiffness or strength: Aluminum A380 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 A380
Copper C110
Stiff rod or tie (tension)
lighter
1.99x heavier
Stiff beam (bending)
lighter
2.56x heavier
Stiff panel or plate
lighter
2.78x heavier
Strong rod or tie
lighter
7.62x heavier
Strong beam
lighter
5.76x heavier
Strong panel or plate
lighter
5x 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 A380 or Copper C110?
Copper C110 conducts heat better: 391 W/m·K against 96.2 W/m·K for Aluminum A380.
Which expands less with temperature?
Copper C110 expands less: 16.9 µm/m·K against 21.8 µm/m·K for Aluminum A380.