Materials / Compare
Brick vs. Plastic PEEK
Compare Brick vs. Plastic PEEK strength, stiffness, weight and thermal properties.
| Try it on a partA sample part to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | not given (tensile used) | 98MPasourcetypical, tensile yield |
| Ultimate tensile strength | 5.1MPasourcemodulus of rupture (no direct tensile value) | not sourced |
| Compressive strength | 77.9MPasourcemean unit compressive strength, solid extruded brick (survey mean; SD 30.8 MPa) | 125MPasourcetypical, 23 C |
| Flexural strength | not sourced | 165MPasourcetypical, flexural stress at yield, 23 C |
| Elongation at break | not sourced | 25%sourcetypical, at break |
| Young's modulus (stiffness) | not sourced | 4GPasourcetypical (nominal) |
| Density | 2,082kg/m³sourceface brick density row used for k (BIA notes most fired clay brick 120-130 lb/ft3) | 1,300kg/m³sourcetypical (crystalline) |
| Strength to weight | 2.45kN·m/kg | 75.4kN·m/kg30.8x higher |
| Stiffness to weight | not sourced | 3.08MN·m/kg |
| Poisson's ratio | not sourced | 0.38sourcetypical |
| Shear modulus | not sourced | 1.45GPa |
| Bulk modulus | not sourced | 5.56GPa |
| Speed of sound | not sourced | 1,754m/s |
| Thermal | ||
| Thermal conductivity | 0.92–1.12W/m·Ksourcerange for 130 lb/ft3 face brick (ASHRAE 2013 via BIA) | 0.29W/m·Ksourcetypical, average, 23 C |
| Thermal expansion | 7.2µm/m·KsourceTMS Code average coefficient, clay/shale unit masonry | 55µm/m·Ksourceaverage of flow/cross-flow, below Tg (<143 C) |
| 100 mm part over a 50 °C swing | 36µm growth7.64x less | 275µm growth |
| Specific heat | 837J/kg·Ksourcevalue used in BIA heat-capacity sample calculation | 2,200J/kg·Ksourcetypical, 23 °C, DSC (Victrex PEEK 450G TDS, revision Jul 2012) |
| Heats up and cools (diffusivity) | 0.585mm²/s5.77x faster | 0.101mm²/s |
| Thermal shock resistance | not sourced | 80.1W/m |
| Melting point | not sourced | 343°Csourcetypical, DSC |
| Glass transition | not sourced | 143°Csourceonset (midpoint 150 C) |
| Max service temperature | not sourced | 240°CsourceUL 746B RTI, mechanical strength (continuous use index) |
| Values for | Solid extruded clay/shale brick units (BIA 1993 manufacturer survey, TN 3A 2024); face brick of 130 lb/ft3 for thermal properties (BIA TN 4, from ASHRAE 2013); CTE is the TMS Code value for clay/shale masonry | Victrex PEEK 450G (unreinforced, injection moulded), Victrex TDS rev. March 2026; Poisson from Victrex fluid-management flyer (2020-07) |
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 Brick stronger than Plastic PEEK?
Plastic PEEK is stronger: its yield strength is 98 MPa against tensile strength 5.1 MPa for Brick (19.2x).
Which is lighter, Brick or Plastic PEEK?
Plastic PEEK is lighter: 1,300 kg/m³ against 2,082 kg/m³ for Brick.
Which is lighter for the same job, Brick or Plastic PEEK?
For the same stiffness or strength: Plastic PEEK is lighter for a strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Brick | Plastic PEEK |
|---|---|---|
| Strong rod or tie | 30.8x heavier | lighter |
| Strong beam | 11.5x heavier | lighter |
| Strong panel or plate | 7.02x 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, Brick or Plastic PEEK?
Brick conducts heat better: 1.02 W/m·K against 0.29 W/m·K for Plastic PEEK.
Which expands less with temperature?
Brick expands less: 7.2 µm/m·K against 55 µm/m·K for Plastic PEEK.