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, Rheocast Company, North American Die Casting Association, 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).
Aluminum A380
A380 aluminium high-pressure die-casting alloy, typical properties; Rheocast Company (aluminium die caster, Germantown WI) A380 alloy data page.
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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
Product Design for Die Casting, Table 4.1: Die Casting Alloys Material Properties ComparisonNorth American Die Casting Associationarchived copyAluminum A380 · Poisson's ratio: typical, as-cast, separately die cast specimens
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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 Aluminum A380?
Aluminum A380 is stronger: its yield strength is 160 MPa against 35 MPa for Aluminum 1100-O (4.57x).
Which is lighter, Aluminum 1100-O or Aluminum A380?
Aluminum 1100-O is lighter: 2,710 kg/m³ against 2,713 kg/m³ for Aluminum A380.
Which is stiffer, Aluminum 1100-O or Aluminum A380?
Aluminum A380 is stiffer: Young's modulus 71 GPa against 69 GPa for Aluminum 1100-O, so the same part in Aluminum A380 deflects less under the same load.
Which is lighter for the same job, Aluminum 1100-O or Aluminum A380?
For the same stiffness or strength: Aluminum A380 is lighter for a stiff rod or tie (tension), stiff beam (bending), strong rod or tie, strong beam, strong panel or plate.
Part that must be
Aluminum 1100-O
Aluminum A380
Stiff rod or tie (tension)
3% heavier
lighter
Stiff beam (bending)
1% heavier
lighter
Stiff panel or plate
about equal
about equal
Strong rod or tie
4.57x heavier
lighter
Strong beam
2.75x heavier
lighter
Strong panel or plate
2.14x 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 1100-O or Aluminum A380?
Aluminum 1100-O stretches further before it breaks: 35% elongation at break against 3.5% for Aluminum A380.
Thermal
Which conducts heat better, Aluminum 1100-O or Aluminum A380?
Aluminum 1100-O conducts heat better: 222 W/m·K against 96.2 W/m·K for Aluminum A380.
Which expands less with temperature?
Aluminum A380 expands less: 21.8 µm/m·K against 23.6 µm/m·K for Aluminum 1100-O.