An Introduction to Ceramic Fiber Insulation Board and Its Applications

Aug 26, 2023

Ceramic fiber insulation board offers an efficient and versatile insulation solution for a variety of industrial settings. Composed of alumina-silica fibers, this rigid board can withstand sustained use at extreme temperatures beyond 2300°F. Its low thermal conductivity, resistance to thermal shock, and durability provide effective insulation for ovens, furnaces,kilns, boilers and other high temperature equipment.

insulation ceramic fiber board

Properties of Ceramic Fiber Insulation Board

Typical properties include:

  • Temperature rating up to 2,300°F
  • Low thermal conductivity from 0.24 – 0.47 BTU/hr/ft2/°F/in at mean temps
  • Low heat storage capacity and thermal inertia for efficiency
  • Resists thermal shock and mechanical abuse
  • High resiliency maintains insulation shape and value
  • Noncombustible material with limited smoke emission
  • Available in a range of densities from 3 – 40 lbs/ft3
  • Can be supplied in 15-25mm thick boards up to 36”x48”

These attributes make it suitable for continuous use at elevated service temperatures in demanding industrial environments.

Typical Applications and Uses

Common applications for ceramic fiber board include:

  • Lining furnaces, ovens and kilns
  • Backing insulation for dense refractory bricks
  • Boiler and duct insulation
  • Fireproofing panels and partitions
  • Expansion joint material
  • High temperature gaskets and seals
  • Insulation wraps for exhaust components
  • Investment casting shell liners
  • Thermal and acoustic insulation panels

Ceramic fiber board insulation offers installation flexibility including attachment with mechanical fasteners, adhesive/pins, or wire mesh anchor systems.

Benefits Over Alternate Insulation

Compared to insulation alternatives, ceramic fiber board offers:

  • Higher temperature rating than mineral wool or calcium silicate
  • Lower conductivity than insulating firebricks
  • Lighter weight than refractories or castables
  • Less shrinkage than alumina-silica blankets at temperature
  • Easier handling versus rigid refractory bricks
  • Higher resiliency and strength than blanket alternatives

With its well-rounded performance properties, ceramic fiber thermal insulation board provides a lightweight, efficient insulation solution for continuous use in the most demanding thermal environments.