Type AL-28/1800
2Pages

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Catalog excerpts

Alumina Type AL-28/1800 General Information ZIRCAR Ceramics’ Alumina Type AL-28/1800 is a cost effective, utility-grade hot face insulation for use in kilns, furnaces and other thermal process systems operating to temperatures of 1800oC. AL-28/1800 is a carefully controlled combination of polycrystalline Al2O3 fiber (PCW), high-purity alumina filler and inorganic refractory binders. AL-28/1800 is low in mass and exhibits low thermal conductivity, good strength and thermal shock resistance. It is pyrotechnically treated to exhibit low thermally-induced shrinkage. AL-28/1800 exhibits a tightly-bound consistency making it suitable for building into Butcher-Block furnace roof and wall components. It is readily bonded using ZIRCAR Ceramics’ Alumina Cement Type AL-CEM/XT. Characteristics & Properties Composition, % The data presented herein is intended to help the user to determine the appropriateness of this material for their application. This data is a nominal representation of this product's properties and characteristics and therefore should not be used in preparing specifications. *Maximum use temperature is dependent on variables such as stresses, both thermal and mechanical, and the chemical environment that the material experiences. ** Properties expressed parallel to thickness. f Properties expressed perpendicular to thickness. ZIRCAR Ceramics, Inc. PO Box 519 Technical Data Bulletin 100 N. Main St., Florida, NY 10921-0519 Alumina Type AL-28/1800 E-mail: sales@zircarceramics.com Page 1 of 2

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Alumina Type AL-28/1800 Suggested Applications Primary thermal insulation in low-mass furnaces and thermal process systems operating to 1800°C (3272°F). Backup thermal insulation in furnaces and thermal process systems operating to temperatures exceeding 2000°C (3632°F). High-temperature setters, supports and process fixtures. Electrical insulation in high-temperature systems operating to 1800°C (3272°F). To Order Standard boards: order online or specify quantity, item # and description. Standard boards are available for immediate shipment from stock. Standard tolerances for boards are +/-...

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