AL-25/1700
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Catalog excerpts

Alumina Type AL-25/1700 General Information ZIRCAR Ceramics’ Alumina Type AL-25/1700 is a combination of high-purity polycrystalline alumina fibers, refractory fillers and inorganic ceramic binders. AL-25/1700 exhibits low thermal conductivity, good hot strength and dimensional stability in rapid-cycle laboratory and production furnaces operating to continuous temperatures of 1700°C (3092°F). AL-25/1700 is pre-fired, contains no organic binders and will produce no smoke or odors when heated. It has excellent resistance to chemical attack and is not affected by oil or water. However, it is affected by hydrofluoric acid, phosphoric acid and strong alkalis. 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. t 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-25/1700 E-mail: sales@zircarceramics.com Page 1 of 2

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Alumina Type AL-25/1700 Suggested Applications Primary thermal insulation in low-mass furnaces and thermal process systems operating to 1700°C (3092°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 1700°C (3092°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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