Materials / Plastic
Plastic Polypropylene
Plastic Polypropylene (PP) strength, stiffness, density and thermal properties, with their source.
A bracket in Plastic Polypropylene, smooth finish.
| Mechanical | |
|---|---|
| Yield strength | 33MPa1 |
| Elongation at break | not sourced |
| Young's modulus (stiffness) | 1.45GPa1 |
| Density | 900kg/m³1 |
| Strength to weight | 36.7kN·m/kg |
| Stiffness to weight | 1.61MN·m/kg |
| Poisson's ratio | base material0.422 |
| Shear modulus | 0.511GPa |
| Bulk modulus | 3.02GPa |
| Speed of sound | 1,269m/s |
| Thermal | |
|---|---|
| Thermal conductivity | base material0.17–0.22W/m·K2 |
| Thermal expansion | base material80–100µm/m·K2 |
| 100 mm part over a 50 °C swing | 450µm growth |
| Specific heat | not sourced |
| Heats up and cools (diffusivity) | not sourced |
| Thermal shock resistance | 28.6W/m |
| Max service temperature | HDT 0.45 MPa90°C1 |
Sources2 documents: LyondellBasell, INEOS Olefins & Polymers USA
- Values for
- Bulk polymer (molded or machined). LyondellBasell Moplen HP501H polypropylene homopolymer (general purpose), typical ISO values
- 1Moplen HP501H Product DataLyondellBasellYield strength: typical, tensile stress at yield ISO 527Young's modulus (stiffness): typical, tensile modulus ISO 527Density: typical, 23 °C ISO 1183-1Max service temperature: HDT 0.45 MPa (ISO 75B), unannealed
- 2Typical Engineering Properties of PolypropyleneINEOS Olefins & Polymers USAarchived copyPoisson's ratio: base material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene)Thermal conductivity: base material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene)Thermal expansion: base material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene)
Thermal properties of Plastic Polypropylene
Thermal conductivity of Plastic Polypropylene
Plastic Polypropylene has a thermal conductivity of 0.17–0.22 W/m·K (0.0982–0.127 BTU/hr·ft·°F). Basis: base material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene). Source: INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylenearchived copy.
Coefficient of thermal expansion of Plastic Polypropylene
Plastic Polypropylene expands 80–100 µm/m·K (44.4–55.6 µin/in·°F): a 100 mm part grows 450 µm over a 50 °C rise. Basis: base material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene). Source: INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylenearchived copy.
Maximum service temperature of Plastic Polypropylene
The maximum service temperature of Plastic Polypropylene is 90 °C (194 °F). Basis: HDT 0.45 MPa (ISO 75B), unannealed. Source: LyondellBasell, Moplen HP501H Product Data.
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