Röhm PLEXIGLAS GS 0F00 cast acrylic sheet, typical values at 23 °C / 50 % RH (Röhm Technical Information Ref. No. 211-1)
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 Plastic PMMA stronger than Solder SAC305?
Plastic PMMA is stronger: its tensile strength is 80 MPa against yield strength 22 MPa for Solder SAC305 (3.64x).
Which is lighter, Plastic PMMA or Solder SAC305?
Plastic PMMA is lighter: 1,190 kg/m³ against 7,350 kg/m³ for Solder SAC305.
Which is stiffer, Plastic PMMA or Solder SAC305?
Solder SAC305 is stiffer: Young's modulus 6.9 GPa against 3.3 GPa for Plastic PMMA, so the same part in Solder SAC305 deflects less under the same load.
Which is lighter for the same job, Plastic PMMA or Solder SAC305?
For the same stiffness or strength: Plastic PMMA 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
Plastic PMMA
Solder SAC305
Stiff rod or tie (tension)
lighter
2.95x heavier
Stiff beam (bending)
lighter
4.27x heavier
Stiff panel or plate
lighter
4.83x heavier
Strong rod or tie
lighter
22.5x heavier
Strong beam
lighter
14.6x heavier
Strong panel or plate
lighter
11.8x 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, Plastic PMMA or Solder SAC305?
Solder SAC305 stretches further before it breaks: 49% elongation at break against 5.5% for Plastic PMMA.
Which conducts heat better, Plastic PMMA or Solder SAC305?
Solder SAC305 conducts heat better: 61 W/m·K against 0.19 W/m·K for Plastic PMMA.
Which expands less with temperature?
Solder SAC305 expands less: 21.9 µm/m·K against 70 µm/m·K for Plastic PMMA.