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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Sources3 documents: Kaiser Aluminum, Rheocast Company, North American Die Casting Association
Aluminum 3003-O
3003-O (annealed) aluminium-manganese alloy, the heat-exchanger tube and brazing alloy, Kaiser Aluminum Tube & Pipe Alloy 3003 Technical Data (Rev. 05/06), typical properties; specific heat from the NIST cryogenic 3003-F fit at 293 K.
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 3003 Tube & Pipe Technical Data, Rev. 05/06Kaiser Aluminumarchived copyAluminum 3003-O · Yield strength: typical, O, 0.0625 in specimenAluminum 3003-O · Ultimate tensile strength: typical, OAluminum 3003-O · Elongation at break: typical, O, in 4DAluminum 3003-O · Young's modulus (stiffness): typicalAluminum 3003-O · Density: nominal, 20 °CAluminum 3003-O · Thermal conductivity: typical, O, 20 °CAluminum 3003-O · Thermal expansion: typical, mean 20-100 °CAluminum 3003-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
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 3003-O stronger than Aluminum A380?
Aluminum A380 is stronger: its yield strength is 160 MPa against 40 MPa for Aluminum 3003-O (4x).
Which is lighter, Aluminum 3003-O or Aluminum A380?
Aluminum A380 is lighter: 2,713 kg/m³ against 2,730 kg/m³ for Aluminum 3003-O.
Which is stiffer, Aluminum 3003-O or Aluminum A380?
Aluminum A380 is stiffer: Young's modulus 71 GPa against 69 GPa for Aluminum 3003-O, so the same part in Aluminum A380 deflects less under the same load.
Which is lighter for the same job, Aluminum 3003-O or Aluminum A380?
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 3003-O
Aluminum A380
Stiff rod or tie (tension)
4% heavier
lighter
Stiff beam (bending)
2% heavier
lighter
Stiff panel or plate
2% heavier
lighter
Strong rod or tie
4.03x heavier
lighter
Strong beam
2.54x heavier
lighter
Strong panel or plate
2.01x 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 3003-O or Aluminum A380?
Aluminum 3003-O stretches further before it breaks: 30% elongation at break against 3.5% for Aluminum A380.
Thermal
Which conducts heat better, Aluminum 3003-O or Aluminum A380?
Aluminum 3003-O conducts heat better: 193 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 23.2 µm/m·K for Aluminum 3003-O.