Materials / Compare
Plastic Polypropylene vs. Plastic PPS GF40
Compare Plastic Polypropylene vs. Plastic PPS GF40 strength, stiffness, weight and thermal properties.
| Try it on a partA bracket to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | 33MPasourcetypical, tensile stress at yield ISO 527 | not given (tensile used) |
| Ultimate tensile strength | not sourced | 195MPasourcetensile strength, 5 mm/min |
| Flexural strength | not sourced | 285MPasourceflexural strength at break |
| Elongation at break | not sourced | 1.9%sourcestrain at break, 5 mm/min |
| Young's modulus (stiffness) | 1.45GPasourcetypical, tensile modulus ISO 527 | 14.7GPasourcetypical, 1 mm/min |
| Density | 900kg/m³sourcetypical, 23 °C ISO 1183-1 | 1,650kg/m³sourcetypical |
| Strength to weight | 36.7kN·m/kg | 118kN·m/kg3.22x higher |
| Stiffness to weight | 1.61MN·m/kg | 8.91MN·m/kg5.53x higher |
| Poisson's ratio | 0.42sourcebase material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene) | 0.35sourceglass-reinforced Fortron PPS (class value, not grade-specific) |
| Shear modulus | 0.511GPa | 5.44GPa10.7x stiffer in shear |
| Bulk modulus | 3.02GPa | 16.3GPa |
| Speed of sound | 1,269m/s | 2,985m/s |
| Thermal | ||
| Thermal conductivity | 0.17–0.22W/m·Ksourcebase material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene) | 0.2W/m·Ksource40% glass-reinforced Fortron, 25 °C (not grade-specific) |
| Thermal expansion | 80–100µm/m·Ksourcebase material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene) | 12µm/m·Ksourceparallel (flow), mean -50 to 90 °C |
| 100 mm part over a 50 °C swing | 450µm growth | 60µm growth7.5x less |
| Specific heat | not sourced | not sourced |
| Heats up and cools (diffusivity) | not sourced | not sourced |
| Thermal shock resistance | 28.6W/m | 144W/m5.02x more resistant |
| Melting point | not sourced | 280°CsourceDSC, 10 °C/min |
| Glass transition | not sourced | 90°CsourceDSC, 10 °C/min |
| Max service temperature | 90°CsourceHDT 0.45 MPa (ISO 75B), unannealed | 270°CsourceHDT 1.8 MPa |
| Values for | LyondellBasell Moplen HP501H polypropylene homopolymer (general purpose), typical ISO 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 Polypropylene stronger than Plastic PPS GF40?
Plastic PPS GF40 is stronger: its tensile strength is 195 MPa against yield strength 33 MPa for Plastic Polypropylene (5.91x).
Which is lighter, Plastic Polypropylene or Plastic PPS GF40?
Plastic Polypropylene is lighter: 900 kg/m³ against 1,650 kg/m³ for Plastic PPS GF40.
Which is stiffer, Plastic Polypropylene or Plastic PPS GF40?
Plastic PPS GF40 is stiffer: Young's modulus 14.7 GPa against 1.45 GPa for Plastic Polypropylene, so the same part in Plastic PPS GF40 deflects less under the same load.
Which is lighter for the same job, Plastic Polypropylene 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 Polypropylene | Plastic PPS GF40 |
|---|---|---|
| Stiff rod or tie (tension) | 5.53x heavier | lighter |
| Stiff beam (bending) | 1.74x heavier | lighter |
| Stiff panel or plate | 18% heavier | lighter |
| Strong rod or tie | 3.22x heavier | lighter |
| Strong beam | 1.78x heavier | lighter |
| Strong panel or plate | 33% 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 Polypropylene or Plastic PPS GF40?
Plastic PPS GF40 conducts heat better: 0.2 W/m·K against 0.195 W/m·K for Plastic Polypropylene.
Which expands less with temperature?
Plastic PPS GF40 expands less: 12 µm/m·K against 90 µm/m·K for Plastic Polypropylene.