2024-T4/T351, Kaiser Aluminum sheet, coil & plate typical datasheet; Poisson from MIL-HDBK-5J
A380 aluminium high-pressure die-casting alloy, typical properties; Rheocast Company (aluminium die caster, Germantown WI) A380 alloy data page.
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 2024-T351 stronger than Aluminum A380?
Aluminum 2024-T351 is stronger: its yield strength is 324 MPa against 160 MPa for Aluminum A380 (2.02x).
Which is lighter, Aluminum 2024-T351 or Aluminum A380?
Aluminum A380 is lighter: 2,713 kg/m³ against 2,770 kg/m³ for Aluminum 2024-T351.
Which is stiffer, Aluminum 2024-T351 or Aluminum A380?
Aluminum 2024-T351 is stiffer: Young's modulus 73.1 GPa against 71 GPa for Aluminum A380, so the same part in Aluminum 2024-T351 deflects less under the same load.
Which is lighter for the same job, Aluminum 2024-T351 or Aluminum A380?
For the same stiffness or strength: Aluminum 2024-T351 is lighter for a strong rod or tie, strong beam, strong panel or plate; Aluminum A380 is lighter for a stiff panel or plate.
Part that must be
Aluminum 2024-T351
Aluminum A380
Stiff rod or tie (tension)
about equal
about equal
Stiff beam (bending)
about equal
about equal
Stiff panel or plate
1% heavier
lighter
Strong rod or tie
lighter
1.98x heavier
Strong beam
lighter
1.57x heavier
Strong panel or plate
lighter
39% 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 2024-T351 or Aluminum A380?
Aluminum 2024-T351 conducts heat better: 120 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 22.9 µm/m·K for Aluminum 2024-T351.