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.
Zamak 3 (ASTM B86 die cast), Nathan Trotter (zinc alloy producer) technical data sheet, typical values
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 Zinc Zamak 3?
Zinc Zamak 3 is stronger: its yield strength is 221 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (65x).
Which is lighter, SLA Resin Elastic 50A or Zinc Zamak 3?
SLA Resin Elastic 50A is lighter: 1,010 kg/m³ against 6,600 kg/m³ for Zinc Zamak 3.
Which is lighter for the same job, SLA Resin Elastic 50A or Zinc Zamak 3?
For the same stiffness or strength: Zinc Zamak 3 is lighter for a strong rod or tie, strong beam, strong panel or plate.
Part that must be
SLA Resin Elastic 50A
Zinc Zamak 3
Strong rod or tie
9.95x heavier
lighter
Strong beam
2.47x heavier
lighter
Strong panel or plate
23% 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).