2,082kg/m³sourceface brick density row used for k (BIA notes most fired clay brick 120-130 lb/ft3)
Strength to weight
2.45kN·m/kg
Stiffness to weight
not sourced
Poisson's ratio
not sourced
Shear modulus
not sourced
Bulk modulus
not sourced
Speed of sound
not sourced
Thermal
Thermal conductivity
0.92–1.12W/m·Ksourcerange for 130 lb/ft3 face brick (ASHRAE 2013 via BIA)
Thermal expansion
7.2µm/m·KsourceTMS Code average coefficient, clay/shale unit masonry
100 mm part over a 50 °C swing
36µm growth
Specific heat
837J/kg·Ksourcevalue used in BIA heat-capacity sample calculation
Heats up and cools (diffusivity)
0.585mm²/s
Thermal shock resistance
not sourced
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