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
VICTREX PEEK 450G Technical Data SheetVictrexPlastic PEEK · Yield strength: typical, tensile yieldPlastic PEEK · Compressive strength: typical, 23 CPlastic PEEK · Flexural strength: typical, flexural stress at yield, 23 CPlastic PEEK · Elongation at break: typical, at breakPlastic PEEK · Young's modulus (stiffness): typical (nominal)Plastic PEEK · Density: typical (crystalline)Plastic PEEK · Thermal conductivity: typical, average, 23 CPlastic PEEK · Thermal expansion: average of flow/cross-flow, below Tg (<143 C)Plastic PEEK · Melting point: typical, DSCPlastic PEEK · Glass transition: onset (midpoint 150 C)Plastic PEEK · Max service temperature: UL 746B RTI, mechanical strength (continuous use index)
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
VICTREX PEEK for Use in Fluid Management (2020)VictrexPlastic PEEK · Poisson's ratio: typical
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
6
VICTREX PEEK 450G Technical Data Sheet (2012)Victrexarchived copyPlastic PEEK · Specific heat: typical, 23 °C, DSC (Victrex PEEK 450G TDS, revision Jul 2012)
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 PEEK?
Plastic PEEK is stronger: its yield strength is 98 MPa against 38.1 MPa for Plastic ABS (2.57x).
Which is lighter, Plastic ABS or Plastic PEEK?
Plastic ABS is lighter: 1,100 kg/m³ against 1,300 kg/m³ for Plastic PEEK.
Which is stiffer, Plastic ABS or Plastic PEEK?
Plastic PEEK is stiffer: Young's modulus 4 GPa against 1.96 GPa for Plastic ABS, so the same part in Plastic PEEK deflects less under the same load.
Which is lighter for the same job, Plastic ABS or Plastic PEEK?
For the same stiffness or strength: Plastic PEEK 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
Plastic PEEK
Stiff rod or tie (tension)
1.73x heavier
lighter
Stiff beam (bending)
21% heavier
lighter
Stiff panel or plate
7% heavier
lighter
Strong rod or tie
2.18x heavier
lighter
Strong beam
1.59x heavier
lighter
Strong panel or plate
36% 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 is more ductile, Plastic ABS or Plastic PEEK?
Plastic PEEK stretches further before it breaks: 25% elongation at break against 4.6% for Plastic ABS.
Thermal
Which conducts heat better, Plastic ABS or Plastic PEEK?
Plastic PEEK conducts heat better: 0.29 W/m·K against 0.17 W/m·K for Plastic ABS.
Which expands less with temperature?
Plastic PEEK expands less: 55 µm/m·K against 95 µm/m·K for Plastic ABS.