Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
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Sources4 documents: Kaiser Aluminum, Copper Development Association, Wieland, Hydro
Aluminum 1100-O
1100-O (annealed) commercially pure aluminium, Kaiser Aluminum Tube & Pipe Alloy 1100 Technical Data (Rev. 05/06), typical properties; specific heat from Hydro EN AW-1050A (99.5% Al) extruded-products datasheet (10/2018).
Copper C110
C11000 ETP copper, annealed to 0.050 mm grain size (OS050), 1 in. rod, copper.org typical values
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Alloy 1100 Tube & Pipe Technical Data, Rev. 05/06Kaiser Aluminumarchived copyAluminum 1100-O · Yield strength: typical, O, 0.0625 in specimenAluminum 1100-O · Ultimate tensile strength: typical, OAluminum 1100-O · Elongation at break: typical, O, in 4DAluminum 1100-O · Young's modulus (stiffness): typicalAluminum 1100-O · Density: nominal, 20 °CAluminum 1100-O · Thermal conductivity: typical, O, 20 °CAluminum 1100-O · Thermal expansion: typical, mean 20-100 °CAluminum 1100-O · Melting point: melting range
Wieland-K32 (Cu-ETP, C11000) Data SheetWielandarchived copyCopper C110 · Poisson's ratio: reference value at room temperature (Wieland-K32 = Cu-ETP = C11000, rolled products)
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Technical Datasheet, Extruded Products: Alloy EN AW-1050AHydroAluminum 1100-O · Specific heat: base material: commercially pure aluminium EN AW-1050A (Hydro), 20 °C
Each number points to the document that states it, with the exact basis. Values without a number are computed from the sourced ones. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
Questions
Mechanical
Is Aluminum 1100-O stronger than Copper C110?
Copper C110 is stronger: its yield strength is 69 MPa against 35 MPa for Aluminum 1100-O (1.97x).
Which is lighter, Aluminum 1100-O or Copper C110?
Aluminum 1100-O is lighter: 2,710 kg/m³ against 8,913 kg/m³ for Copper C110.
Which is stiffer, Aluminum 1100-O or Copper C110?
Copper C110 is stiffer: Young's modulus 117 GPa against 69 GPa for Aluminum 1100-O, so the same part in Copper C110 deflects less under the same load.
Which is lighter for the same job, Aluminum 1100-O or Copper C110?
For the same stiffness or strength: Aluminum 1100-O 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 1100-O
Copper C110
Stiff rod or tie (tension)
lighter
1.94x heavier
Stiff beam (bending)
lighter
2.52x heavier
Stiff panel or plate
lighter
2.76x heavier
Strong rod or tie
lighter
1.67x heavier
Strong beam
lighter
2.09x heavier
Strong panel or plate
lighter
2.34x 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 is more ductile, Aluminum 1100-O or Copper C110?
Copper C110 stretches further before it breaks: 55% elongation at break against 35% for Aluminum 1100-O.
Thermal
Which conducts heat better, Aluminum 1100-O or Copper C110?
Copper C110 conducts heat better: 391 W/m·K against 222 W/m·K for Aluminum 1100-O.
Which expands less with temperature?
Copper C110 expands less: 16.9 µm/m·K against 23.6 µm/m·K for Aluminum 1100-O.