Formlabs Elastic 50A Resin V2 (FLELCL02), TDS Rev. 01 24.01.2024; parts printed on Form 3, 100 µm, Elastic 50A V2 settings and post-processing; tensile on Die C specimens cut from printed sheets after 3+ h at 23 °C.
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.
SLA Resin Elastic 50A is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is SLA Resin Elastic 50A stronger than Solder SAC305?
Solder SAC305 is stronger: its yield strength is 22 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (6.47x).
Which is lighter, SLA Resin Elastic 50A or Solder SAC305?
SLA Resin Elastic 50A is lighter: 1,010 kg/m³ against 7,350 kg/m³ for Solder SAC305.
Which is lighter for the same job, SLA Resin Elastic 50A or Solder SAC305?
For the same stiffness or strength: SLA Resin Elastic 50A is lighter for a strong rod or tie, strong beam, strong panel or plate.
Part that must be
SLA Resin Elastic 50A
Solder SAC305
Strong rod or tie
lighter
12% heavier
Strong beam
lighter
2.1x heavier
Strong panel or plate
lighter
2.86x 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, SLA Resin Elastic 50A or Solder SAC305?
SLA Resin Elastic 50A stretches further before it breaks: 160% elongation at break against 49% for Solder SAC305.