Materials / Compare
Plastic PPS GF40 vs. Wood
Compare Plastic PPS GF40 vs. Wood strength, stiffness, weight and thermal properties.
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|---|---|---|
| Mechanical | ||
| Yield strength | not given (tensile used) | not given (tensile used) |
| Ultimate tensile strength | 195MPasourcetensile strength, 5 mm/min | 99MPasourcemodulus of rupture (no direct tensile value) |
| Compressive strength | not sourced | 46.6MPasourcecompression parallel to grain (maximum crushing strength), 12% MC |
| Flexural strength | 285MPasourceflexural strength at break | 99MPasourcemodulus of rupture (static bending), 12% MC |
| Elongation at break | 1.9%sourcestrain at break, 5 mm/min | not sourced |
| Young's modulus (stiffness) | 14.7GPasourcetypical, 1 mm/min | 12.5GPasourcebending MOE, parallel to grain |
| Density | 1,650kg/m³sourcetypical | not sourced |
| Strength to weight | 118kN·m/kg | not sourced |
| Stiffness to weight | 8.91MN·m/kg | not sourced |
| Poisson's ratio | 0.35sourceglass-reinforced Fortron PPS (class value, not grade-specific) | 0.35sourcemu_LR (red oak group, ~12% MC) |
| Shear modulus | 5.44GPa18% stiffer in shear | 4.63GPa |
| Bulk modulus | 16.3GPa | 13.9GPa |
| Speed of sound | 2,985m/s | not sourced |
| Thermal | ||
| Thermal conductivity | 0.2W/m·Ksource40% glass-reinforced Fortron, 25 °C (not grade-specific) | 0.18W/m·Ksourceacross grain, 12% MC (Table 4-7, approximate) |
| Thermal expansion | 12µm/m·Ksourceparallel (flow), mean -50 to 90 °C | 3.1–4.5µm/m·Ksourceparallel to grain, ovendry wood, range across species |
| 100 mm part over a 50 °C swing | 60µm growth | 19µm growth3.16x less |
| Specific heat | not sourced | 1,700J/kg·Ksourcesolid wood (all species), 12% MC, 27 C |
| Heats up and cools (diffusivity) | not sourced | not sourced |
| Thermal shock resistance | 144W/m | 244W/m1.7x more resistant |
| Melting point | 280°CsourceDSC, 10 °C/min | not sourced |
| Glass transition | 90°CsourceDSC, 10 °C/min | not sourced |
| Max service temperature | 270°CsourceHDT 1.8 MPa | not sourced |
| Values for | 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). | Northern red oak (Quercus rubra), clear straight-grained specimens at 12% MC, parallel to grain unless stated; USDA FPL Wood Handbook FPL-GTR-282 (2021) Ch. 4 and Ch. 5 |
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 PPS GF40 stronger than Wood?
Plastic PPS GF40 is stronger: its tensile strength is 195 MPa against 99 MPa for Wood (1.97x).
Which is stiffer, Plastic PPS GF40 or Wood?
Plastic PPS GF40 is stiffer: Young's modulus 14.7 GPa against 12.5 GPa for Wood, so the same part in Plastic PPS GF40 deflects less under the same load.
Which conducts heat better, Plastic PPS GF40 or Wood?
Plastic PPS GF40 conducts heat better: 0.2 W/m·K against 0.18 W/m·K for Wood.
Which expands less with temperature?
Wood expands less: 3.8 µm/m·K against 12 µm/m·K for Plastic PPS GF40.