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Fiberfrax® Duraboard® Products
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 Fiberfrax® Duraboard® Products
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Fiberfrax® Duraboard® products are a family of rigid, high-temperature ceramic fiber boards manaufactured in a wet forming process using Fiberfrax alumino-silicate fibers and binders. All Duraboard products offer low thermal conductivity, high temperature stability, uniform density, and excellent resistance to thermal shock and chemical attack. Fiberfrax Duraboard products exhibit thermal stability at temperatures up to 3000°F.
The Fiberfrax Duraboard family exhibits excellent chemical stability, resisting attack by most corrosive agents. Exceptions are hydrofluoric, phosphoric, hydrochloric and sulfuric acids as well as concentrated alkalies. Fiberfrax Duraboard products also resist oxidation and reduction. If wet by water, steam or oil, thermal and physical properties are completely restored upon drying.
In order to provide handling strength during the manufacturing process, small quantities of organic and inorganic binders are added to the board formulation. Where present, the organic binding agents burn out at temperatures between 232°C (450°F) to 316°C (600°F) during initial heat up by the end user. Following burnout of the organic binder, the boards are white in color.
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