Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
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Hostalen 23050 B Product DataLyondellBasellPlastic HDPE · Yield strength: typical, tensile stress at yield 23 °C, 50 mm/min ISO 527Plastic HDPE · Young's modulus (stiffness): typical, tensile modulus 23 °C ISO 527Plastic HDPE · Density: typical, ISO 1183
3
Engineering Polymers Part and Mold Design: Thermoplastics, A Design GuideCovestroarchived copyPlastic ABS (bulk/injection) · Poisson's ratio: typical, ABS family (Covestro Part and Mold Design guide, Table 3-1)
4
Typical Engineering Properties of High Density PolyethyleneINEOS Olefins & Polymers USAarchived copyPlastic HDPE · Poisson's ratio: base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)Plastic HDPE · Thermal conductivity: base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)Plastic HDPE · Thermal expansion: base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)Plastic HDPE · Specific heat: base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)
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.
Questions
Mechanical
Is Plastic ABS (bulk/injection) stronger than Plastic HDPE?
Plastic ABS (bulk/injection) is stronger: its yield strength is 45 MPa against 24 MPa for Plastic HDPE (1.88x).
Which is lighter, Plastic ABS (bulk/injection) or Plastic HDPE?
Plastic HDPE is lighter: 950 kg/m³ against 1,040 kg/m³ for Plastic ABS (bulk/injection).
Which is stiffer, Plastic ABS (bulk/injection) or Plastic HDPE?
Plastic ABS (bulk/injection) is stiffer: Young's modulus 2.3 GPa against 0.9 GPa for Plastic HDPE, so the same part in Plastic ABS (bulk/injection) deflects less under the same load.
Which is lighter for the same job, Plastic ABS (bulk/injection) or Plastic HDPE?
For the same stiffness or strength: Plastic ABS (bulk/injection) 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 ABS (bulk/injection)
Plastic HDPE
Stiff rod or tie (tension)
lighter
2.33x heavier
Stiff beam (bending)
lighter
46% heavier
Stiff panel or plate
lighter
25% heavier
Strong rod or tie
lighter
1.71x heavier
Strong beam
lighter
39% heavier
Strong panel or plate
lighter
25% heavier
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 (bulk/injection) or Plastic HDPE?
Plastic HDPE conducts heat better: 0.445 W/m·K against 0.17 W/m·K for Plastic ABS (bulk/injection).
Which expands less with temperature?
Plastic ABS (bulk/injection) expands less: 95 µm/m·K against 120 µm/m·K for Plastic HDPE.