Sumitomo Chemical SUMIKASUPER LCP E6006L (30% glass fibre; high strength, low shrinkage); SUMIKASUPER LCP Technical Note, Version 04 / Nov. 2023, typical values.
Ultimaker TPU 95A, 3D-printed specimens, XY (flat); Ultimaker S5 Pro, engineering intent profile, 0.15 mm layer height, AA 0.4 print core, 100% infill, Cura 4.9, printed one-at-a-time, conditioned >=24 h at room temperature. TDS (file v5.00), April 29, 2022.
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.
Plastic TPU is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is Plastic LCP GF30 stronger than Plastic TPU?
Plastic LCP GF30 is stronger: its tensile strength is 115 MPa against 23.7 MPa for Plastic TPU (4.85x).
Which is lighter, Plastic LCP GF30 or Plastic TPU?
Plastic TPU is lighter: 1,220 kg/m³ against 1,610 kg/m³ for Plastic LCP GF30.
Which is stiffer, Plastic LCP GF30 or Plastic TPU?
Plastic LCP GF30 is stiffer: Young's modulus 11.5 GPa against 0.067 GPa for Plastic TPU, so the same part in Plastic LCP GF30 deflects less under the same load.
Which is lighter for the same job, Plastic LCP GF30 or Plastic TPU?
For the same stiffness or strength: Plastic LCP GF30 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
Part that must be
Plastic LCP GF30
Plastic TPU
Stiff rod or tie (tension)
lighter
130x heavier
Stiff beam (bending)
lighter
9.93x heavier
Stiff panel or plate
lighter
4.21x heavier
Strong rod or tie
lighter
3.68x heavier
Strong beam
lighter
2.17x heavier
Strong panel or plate
lighter
1.67x 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).