JIS ADC12 (Al-Si-Cu, about A383 / EN AC-46100) high-pressure die-casting alloy, as cast; physical properties from Daiki Aluminium Industry (ADC12 ingot producer) measured values; modulus from S.S.Aluminum (ADC12 ingot producer) standard values.
Bambu Lab PAHT-CF, TDS V3.0, printed specimens X-Y, dry state; nozzle 290 °C, bed 100 °C, 100 mm/s, 100% infill; annealed and dried 80 °C for 12 h before testing.
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.
FDM PAHT-CF is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is Aluminum ADC12 stronger than FDM PAHT-CF?
Aluminum ADC12 is stronger: its yield strength is 149 MPa against tensile strength 92 MPa for FDM PAHT-CF (1.62x).
Which is lighter, Aluminum ADC12 or FDM PAHT-CF?
FDM PAHT-CF is lighter: 1,060 kg/m³ against 2,680 kg/m³ for Aluminum ADC12.
Which is stiffer, Aluminum ADC12 or FDM PAHT-CF?
Aluminum ADC12 is stiffer: Young's modulus 79.8 GPa against 3.86 GPa for FDM PAHT-CF, so the same part in Aluminum ADC12 deflects less under the same load.
Which is lighter for the same job, Aluminum ADC12 or FDM PAHT-CF?
For the same stiffness or strength: Aluminum ADC12 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate; FDM PAHT-CF is lighter for a strong rod or tie, strong beam, strong panel or plate.
Part that must be
Aluminum ADC12
FDM PAHT-CF
Stiff rod or tie (tension)
lighter
8.18x heavier
Stiff beam (bending)
lighter
1.8x heavier
Stiff panel or plate
lighter
9% heavier
Strong rod or tie
1.56x heavier
lighter
Strong beam
1.83x heavier
lighter
Strong panel or plate
1.99x 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).