A380 aluminium high-pressure die-casting alloy, typical properties; Rheocast Company (aluminium die caster, Germantown WI) A380 alloy data page.
Ultimaker TPU 95A, 3D-printed specimens, XY (flat); Ultimaker S5 Pro, engineering intent profile, 0.15 mm layer height, AA 0.4 print core, 100% infill, Cura 4.9, printed one-at-a-time, conditioned >=24 h at room temperature. TDS (file v5.00), April 29, 2022.
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.
Plastic TPU is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is Aluminum A380 stronger than Plastic TPU?
Aluminum A380 is stronger: its yield strength is 160 MPa against tensile strength 23.7 MPa for Plastic TPU (6.75x).
Which is lighter, Aluminum A380 or Plastic TPU?
Plastic TPU is lighter: 1,220 kg/m³ against 2,713 kg/m³ for Aluminum A380.
Which is stiffer, Aluminum A380 or Plastic TPU?
Aluminum A380 is stiffer: Young's modulus 71 GPa against 0.067 GPa for Plastic TPU, so the same part in Aluminum A380 deflects less under the same load.
Which is lighter for the same job, Aluminum A380 or Plastic TPU?
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
Plastic TPU
Stiff rod or tie (tension)
lighter
477x heavier
Stiff beam (bending)
lighter
14.6x heavier
Stiff panel or plate
lighter
4.58x heavier
Strong rod or tie
lighter
3.04x heavier
Strong beam
lighter
1.61x heavier
Strong panel or plate
lighter
17% 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).