Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
Try it on a partA bracket to run stress or thermal on, free in your browser
Moplen HP501H Product DataLyondellBasellPlastic Polypropylene · Yield strength: typical, tensile stress at yield ISO 527Plastic Polypropylene · Young's modulus (stiffness): typical, tensile modulus ISO 527Plastic Polypropylene · Density: typical, 23 °C ISO 1183-1Plastic Polypropylene · Max service temperature: HDT 0.45 MPa (ISO 75B), unannealed
3
Engineering Polymers Part and Mold Design: Thermoplastics, A Design GuideCovestroarchived copyPlastic ABS · Poisson's ratio: base material: ABS family typical (Covestro Part and Mold Design guide, Table 3-1)
4
Typical Engineering Properties of PolypropyleneINEOS Olefins & Polymers USAarchived copyPlastic Polypropylene · Poisson's ratio: base material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene)Plastic Polypropylene · Thermal conductivity: base material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene)Plastic Polypropylene · Thermal expansion: base material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene)
5
Terluran GP-22 (ABS) Product Data SheetINEOS StyrolutionPlastic ABS · Thermal conductivity: base material: INEOS Styrolution Terluran GP-22 injection-molding ABS, typicalPlastic ABS · Thermal expansion: base material: INEOS Styrolution Terluran GP-22 injection-molding ABS, range
Each number points to the document that states it, with the exact basis. Values without a number are computed from the sourced ones. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
Plastic ABS is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Mechanical
Is Plastic ABS stronger than Plastic Polypropylene?
Plastic ABS is stronger: its yield strength is 38.1 MPa against 33 MPa for Plastic Polypropylene (15%).
Which is lighter, Plastic ABS or Plastic Polypropylene?
Plastic Polypropylene is lighter: 900 kg/m³ against 1,100 kg/m³ for Plastic ABS.
Which is stiffer, Plastic ABS or Plastic Polypropylene?
Plastic ABS is stiffer: Young's modulus 1.96 GPa against 1.45 GPa for Plastic Polypropylene, so the same part in Plastic ABS deflects less under the same load.
Which is lighter for the same job, Plastic ABS or Plastic Polypropylene?
For the same stiffness or strength: Plastic ABS is lighter for a stiff rod or tie (tension); Plastic Polypropylene is lighter for a stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
Part that must be
Plastic ABS
Plastic Polypropylene
Stiff rod or tie (tension)
lighter
11% heavier
Stiff beam (bending)
5% heavier
lighter
Stiff panel or plate
11% heavier
lighter
Strong rod or tie
6% heavier
lighter
Strong beam
11% heavier
lighter
Strong panel or plate
14% 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).
Thermal
Which conducts heat better, Plastic ABS or Plastic Polypropylene?
Plastic Polypropylene conducts heat better: 0.195 W/m·K against 0.17 W/m·K for Plastic ABS.
Which expands less with temperature?
Plastic Polypropylene expands less: 90 µm/m·K against 95 µm/m·K for Plastic ABS.