BASF Ultramid A3K (PA66, unreinforced injection-moulding grade), Product Information 02/2026, dry values (ISO methods)
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 Nylon PA66 stronger than SLA Resin Elastic 50A?
Plastic Nylon PA66 is stronger: its yield strength is 85 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (25x).
Which is lighter, Plastic Nylon PA66 or SLA Resin Elastic 50A?
SLA Resin Elastic 50A is lighter: 1,010 kg/m³ against 1,130 kg/m³ for Plastic Nylon PA66.
Which is lighter for the same job, Plastic Nylon PA66 or SLA Resin Elastic 50A?
For the same stiffness or strength: Plastic Nylon PA66 is lighter for a strong rod or tie, strong beam, strong panel or plate.
Part that must be
Plastic Nylon PA66
SLA Resin Elastic 50A
Strong rod or tie
lighter
22.3x heavier
Strong beam
lighter
7.64x heavier
Strong panel or plate
lighter
4.47x 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).