BASF Ultramid B3S (PA6, unreinforced injection-moulding grade), Product Information 02/2026, dry values (ISO methods)
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 Nylon PA6 stronger than Plastic PPS GF40?
Plastic PPS GF40 is stronger: its tensile strength is 195 MPa against yield strength 90 MPa for Plastic Nylon PA6 (2.17x).
Which is lighter, Plastic Nylon PA6 or Plastic PPS GF40?
Plastic Nylon PA6 is lighter: 1,130 kg/m³ against 1,650 kg/m³ for Plastic PPS GF40.
Which is stiffer, Plastic Nylon PA6 or Plastic PPS GF40?
Plastic PPS GF40 is stiffer: Young's modulus 14.7 GPa against 3.5 GPa for Plastic Nylon PA6, so the same part in Plastic PPS GF40 deflects less under the same load.
Which is lighter for the same job, Plastic Nylon PA6 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.
Part that must be
Plastic Nylon PA6
Plastic PPS GF40
Stiff rod or tie (tension)
2.88x heavier
lighter
Stiff beam (bending)
40% heavier
lighter
Stiff panel or plate
10% heavier
lighter
Strong rod or tie
48% heavier
lighter
Strong beam
15% heavier
lighter
Strong panel or plate
about equal
about equal
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 Nylon PA6 or Plastic PPS GF40?
Plastic Nylon PA6 conducts heat better: 0.33 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 102 µm/m·K for Plastic Nylon PA6.