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.
Generic structural steel, cited as ASTM A992 (the current US structural grade): ASTM A992 W-shapes; Fy/Fu specified minimums from AISC publications (AISC 360-16 Commentary; Modern Steel Construction); elastic constants AISC 360; physical constants from the bauforumstahl structural-steel EPD, which names A992 among covered product standards.
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 Steel?
Steel is stronger: its yield strength is 385 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (113x).
Which is lighter, SLA Resin Elastic 50A or Steel?
SLA Resin Elastic 50A is lighter: 1,010 kg/m³ against 7,850 kg/m³ for Steel.
Which is lighter for the same job, SLA Resin Elastic 50A or Steel?
For the same stiffness or strength: Steel is lighter for a strong rod or tie, strong beam, strong panel or plate.
Part that must be
SLA Resin Elastic 50A
Steel
Strong rod or tie
14.6x heavier
lighter
Strong beam
3.01x heavier
lighter
Strong panel or plate
37% 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).