Transite HT

These non-asbestos, monolithic, fiber cement industrial boards are used in environments up to 600°F and where high strength is the primary concern.


The 3R4080 is used in the foundry industry for flask liners, cores, drying and carry plates, and induction furnace casings. Electrical applications include busbar supports, aluminium pot insulation, and electrode arm insulators.

Transite HT is also used as load bearing gasketing, spacers, supports, and machined parts for OEM applications.


Technical Data

Density lbs/pi³(kg/m³) 100 (1602)
Modulus of Rupture (Flexural Strength) psi (kg/cm²) 2600 (183)
Compressive Strength
Ultimate load psi (kg/cm²) 10,400 (731)
@ 5% deformation psi (kg/cm²) 6500 (457)
Moisture Content (normal), % of dry weight 12
Thermal Conductivity
Mean Temperature, Btu-in/ft², hr, °F
250°F 2.40
400°F -
600°F -
800°F -
1000°F -
Mean Temperature, (W/m°K)
121°C 0.34
204°C -
316°C -
427°C -
538°C -
Shrinkage 24 hours at 316°C (600°F)
Linear (Length or width), % 0.85
Thickness, % 3.7
Arc Resistance, seconds, ASTM D 495 260
Volume Resistivity, ohm-cm, ASTM D 257 7.1 X (10^10)
Dielectric Strength, v/mil, ASTM D 495 35
Screw Holding Strength
@ 7/8" penetration, lbs (kg)
N.B. The information presented may differ from practice. We recommend conducting tests according to the conditions of use. We accept no responsibility for results obtained by the application of this information or the safety and suitability of our products. The data is subject to certain variations without notice.