Materials / Compare
Brick vs. Rubber
Compare Brick vs. Rubber 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) | not given (tensile used) |
| Ultimate tensile strength | 5.1MPasourcemodulus of rupture (no direct tensile value) | 23MPasourcetypical |
| Compressive strength | 77.9MPasourcemean unit compressive strength, solid extruded brick (survey mean; SD 30.8 MPa) | not sourced |
| Elongation at break | not sourced | 830%sourcetypical |
| Young's modulus (stiffness) | not sourced | not sourced |
| Density | 2,082kg/m³sourceface brick density row used for k (BIA notes most fired clay brick 120-130 lb/ft3) | 960kg/m³sourcetypical (specific gravity) |
| Strength to weight | 2.45kN·m/kg | 24kN·m/kg9.78x higher |
| Stiffness to weight | not sourced | not sourced |
| Poisson's ratio | not sourced | 0.5sourcegovernment (NBS J. Res. 68A, 1964): computed by NBS for peroxide-cured gum NR vulcanizate, 25 °C, infinitesimal deformation0.49 in the solver: the linear element locks as the ratio nears 0.5 (nearly incompressible). |
| Shear modulus | not sourced | not sourced |
| Bulk modulus | not sourced | not sourced |
| Speed of sound | not sourced | not sourced |
| Thermal | ||
| Thermal conductivity | 0.92–1.12W/m·Ksourcerange for 130 lb/ft3 face brick (ASHRAE 2013 via BIA) | 0.151W/m·Ksourcegovernment selected value (US Army Natick Laboratories TR 66-49-PR, 1966), soft vulcanized natural rubber, 25 °C |
| Thermal expansion | 7.2µm/m·KsourceTMS Code average coefficient, clay/shale unit masonry | not sourced |
| 100 mm part over a 50 °C swing | 36µm growth | not sourced |
| Specific heat | 837J/kg·Ksourcevalue used in BIA heat-capacity sample calculation | 1,881J/kg·Ksourcegovernment (NBS J. Res. 68A, Table 7; values observed for unvulcanized NR by Bekkedahl and Matheson), 25 °C |
| Heats up and cools (diffusivity) | 0.585mm²/s7x faster | 0.0836mm²/s |
| Thermal shock resistance | not sourced | not sourced |
| Max service temperature | not sourced | 70°Csourcecontinuous use operating range |
| 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 | Weir Minerals Linatex Premium rubber (95 % natural rubber), typical physical properties, spec sheet WMD0118/202305 |
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 Rubber?
Rubber is stronger: its tensile strength is 23 MPa against 5.1 MPa for Brick (4.51x).
Which is lighter, Brick or Rubber?
Rubber is lighter: 960 kg/m³ against 2,082 kg/m³ for Brick.
Which is lighter for the same job, Brick or Rubber?
For the same stiffness or strength: Rubber is lighter for a strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Brick | Rubber |
|---|---|---|
| Strong rod or tie | 9.78x heavier | lighter |
| Strong beam | 5.92x heavier | lighter |
| Strong panel or plate | 4.61x 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 Rubber?
Brick conducts heat better: 1.02 W/m·K against 0.151 W/m·K for Rubber.