Sumitomo Chemical SUMIKASUPER LCP E6006L (30% glass fibre; high strength, low shrinkage); SUMIKASUPER LCP Technical Note, Version 04 / Nov. 2023, typical values.
Celanese Fortron 1140L4 (PPS, 40% glass fibre), injection moulding; FORTRON PPS Short-Term Properties Guide (PPS-012, 2016); thermal conductivity and Poisson for 40% glass-reinforced Fortron from the Fortron PPS Design Manual (PPS-050, 2013).
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.
Questions
Is Plastic LCP GF30 stronger than Plastic PPS GF40?
Plastic PPS GF40 is stronger: its tensile strength is 195 MPa against 115 MPa for Plastic LCP GF30 (1.7x).
Which is lighter, Plastic LCP GF30 or Plastic PPS GF40?
Plastic LCP GF30 is lighter: 1,610 kg/m³ against 1,650 kg/m³ for Plastic PPS GF40.
Which is stiffer, Plastic LCP GF30 or Plastic PPS GF40?
Plastic PPS GF40 is stiffer: Young's modulus 14.7 GPa against 11.5 GPa for Plastic LCP GF30, so the same part in Plastic PPS GF40 deflects less under the same load.
Which is lighter for the same job, Plastic LCP GF30 or Plastic PPS GF40?
For the same stiffness or strength: Plastic PPS GF40 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 PPS GF40
Stiff rod or tie (tension)
25% heavier
lighter
Stiff beam (bending)
10% heavier
lighter
Stiff panel or plate
6% heavier
lighter
Strong rod or tie
1.65x heavier
lighter
Strong beam
39% heavier
lighter
Strong panel or plate
27% 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).
Which conducts heat better, Plastic LCP GF30 or Plastic PPS GF40?
Plastic LCP GF30 conducts heat better: 0.5 W/m·K against 0.2 W/m·K for Plastic PPS GF40.
Which expands less with temperature?
Plastic PPS GF40 expands less: 12 µm/m·K against 20 µm/m·K for Plastic LCP GF30.