240°CsourceUL 746B RTI, mechanical strength (continuous use index)
not sourced
Values for
Victrex PEEK 450G (unreinforced, injection moulded), Victrex TDS rev. March 2026; Poisson from Victrex fluid-management flyer (2020-07)
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.
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 Plastic PEEK stronger than SLA Resin Elastic 50A?
Plastic PEEK is stronger: its yield strength is 98 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (28.8x).
Which is lighter, Plastic PEEK or SLA Resin Elastic 50A?
SLA Resin Elastic 50A is lighter: 1,010 kg/m³ against 1,300 kg/m³ for Plastic PEEK.
Which is lighter for the same job, Plastic PEEK or SLA Resin Elastic 50A?
For the same stiffness or strength: Plastic PEEK is lighter for a strong rod or tie, strong beam, strong panel or plate.
Part that must be
Plastic PEEK
SLA Resin Elastic 50A
Strong rod or tie
lighter
22.4x heavier
Strong beam
lighter
7.3x heavier
Strong panel or plate
lighter
4.17x 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).