300°Csourceproducer's maximum application temperature (optical components)
not sourced
Values for
Synthetic single-crystal silicon (cubic, diamond structure), Korth Kristalle (crystal grower) material data; Korth usually supplies Floating Zone (FZ) material, Czochralski (Cz) also offered. Silicon is elastically anisotropic; the producer quotes one modulus and the solver is isotropic.
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 Silicon stronger than Solder SAC305?
Silicon is stronger: its tensile strength is 130 MPa against yield strength 22 MPa for Solder SAC305 (5.91x).
Which is lighter, Silicon or Solder SAC305?
Silicon is lighter: 2,329 kg/m³ against 7,350 kg/m³ for Solder SAC305.
Which is stiffer, Silicon or Solder SAC305?
Silicon is stiffer: Young's modulus 131 GPa against 6.9 GPa for Solder SAC305, so the same part in Silicon deflects less under the same load.
Which is lighter for the same job, Silicon or Solder SAC305?
For the same stiffness or strength: Silicon 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
Silicon
Solder SAC305
Stiff rod or tie (tension)
lighter
59.9x heavier
Stiff beam (bending)
lighter
13.8x heavier
Stiff panel or plate
lighter
8.42x heavier
Strong rod or tie
lighter
18.6x heavier
Strong beam
lighter
10.3x heavier
Strong panel or plate
lighter
7.67x 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, Silicon or Solder SAC305?
Silicon conducts heat better: 163 W/m·K against 61 W/m·K for Solder SAC305.
Which expands less with temperature?
Silicon expands less: 2.62 µm/m·K against 21.9 µm/m·K for Solder SAC305.