A380 aluminium high-pressure die-casting alloy, typical properties; Rheocast Company (aluminium die caster, Germantown WI) A380 alloy data page.
SAC305 (Sn96.5Ag3.0Cu0.5) solder alloy, bulk; Indium Corporation Indalloy 256 (SAC305) for Preforms product data sheet (Form No. 100346 R0, 2024), selected properties, test temperature not stated; expansion and specific heat from MacDermid Alpha VACULOY SAC TDS (06 September 2023).
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 A380 stronger than Solder SAC305?
Aluminum A380 is stronger: its yield strength is 160 MPa against 22 MPa for Solder SAC305 (7.27x).
Which is lighter, Aluminum A380 or Solder SAC305?
Aluminum A380 is lighter: 2,713 kg/m³ against 7,350 kg/m³ for Solder SAC305.
Which is stiffer, Aluminum A380 or Solder SAC305?
Aluminum A380 is stiffer: Young's modulus 71 GPa against 6.9 GPa for Solder SAC305, so the same part in Aluminum A380 deflects less under the same load.
Which is lighter for the same job, Aluminum A380 or Solder SAC305?
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
Solder SAC305
Stiff rod or tie (tension)
lighter
27.9x heavier
Stiff beam (bending)
lighter
8.69x heavier
Stiff panel or plate
lighter
5.89x heavier
Strong rod or tie
lighter
19.7x heavier
Strong beam
lighter
10.2x heavier
Strong panel or plate
lighter
7.31x 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 is more ductile, Aluminum A380 or Solder SAC305?
Solder SAC305 stretches further before it breaks: 49% elongation at break against 3.5% for Aluminum A380.
Which conducts heat better, Aluminum A380 or Solder SAC305?
Aluminum A380 conducts heat better: 96.2 W/m·K against 61 W/m·K for Solder SAC305.
Which expands less with temperature?
Aluminum A380 expands less: 21.8 µm/m·K against 21.9 µm/m·K for Solder SAC305.