HIGH ALUMINA COMPOSITES RS-99M, RS-99W, RS-99R ZIRCAR Refractory Sheet Types RS-99 is a moderately high-density fiber based ceramic material with greater than 99% alumina purity. Refractory Sheet Type RS-99 is usable to temperatures 1650⁰C (3002⁰F) and can withstand over 500 hours of continuous submersion in molten aluminum at 750⁰C (1382⁰F) with no wetting and no degradation in properties. Type RS99’s high alumina content is ideal for high vacuum, reducing atmospheres and other applications where silica cannot be tolerated, such as setters for P/M and MIM applications. Refractory Sheet Type RS-99 boards are available in three types: Type RS-99M is a plastic highly moldable sheet ideally suited for forming custom geometries or for molding in place. Type RS-99W boards can be moistened with water and molded into any desired shape. After a low temperature baked out of 300⁰C (570⁰F) the boards are unaffected by moisture. Type RS-99R boards are pre-fired and are unaffected by moisture. They remain rigid even if saturated with water. SUGGESTED APPLICATIONS • • • • High and Low Temperature Gasketing Asbestos-Cement Board Replacements Dead Plates, Set Out Plates, Wear Guides and Pusher Pads in Hot Glass Handling Induction Furnace Components such as: Channel Melter Components, Coil Liners, Coreless Induction Components, Covers, Tops, Bases, Front and Back Plates, Coil Supports, Splash and Coil Shield Brazing Separators and Fixtures. The High AlO Content Makes this Product Resistant to Sticking in Many Environments Including Molten Metals Rapid Cycle Furnace Door Cowls and Hot Face Supports Insulation in High Pressure Molding Presses High and Low Temperature Electrical Insulator ZIRCAR Refractory Composites, Inc. P.O. BOX 489, FLORIDA, NY 10921-0489 Tele: (845) 651-2200, Fax: (845) 651-1515 e-mail: [email protected] Home page: http://www.zrci.com CYLINDERS/CUSTOM SHAPES Custom boards, shapes and preparations are available on request. Our forming processes, large inventory of custom tooling and state of the art machining techniques allow a wide variety of sizes and shapes to be made. Special geometries such as disks, rings, gaskets and custom-machined shapes can be fabricated. Tight tolerance machining, compositional variations and the application of surface rigidizers and hardening agents are available. Please contact us with your special requirements. FABRICATION GUIDELINES RS-99M can be readily cut with a knife or scissors. Joints can be made by wetting both surfaces with water, (with a sponge or brush), and promptly pressing the two surfaces together. Thicker sheets can be made by laminating two or more sheets together in this manner. RS-99W is suitable for die cutting or stamping of gaskets. They can be re-wet, made moldable, and handled like RS-99M. RS-99R cuts and handles similarly to RS-99W except it is slightly less compressible and more rigid. They can be machined to precision tolerances with conventional tooling. Technical Data Bulletin No. ZRCI-021 Rev. March 2024 Thisinformation, whichis subjectto change, is offeredsolelyfor yourconsiderationand shouldnot be takenasa warrantyor representationfor whichwe assumelegalresponsibility. It is not to be understood aspermissionorrecommendation topracticeapatentedinventionwithoutalicenseandtheusershoulddeterminew

HIGH ALUMINA MATRIX SHEETS PHYSICAL PROPERTIES AND CHARACTERISTICS TYPE Form Nominal Composition, wt% Al2O3 SiO2 Organic Color Max. Use Temp., C⁰(F⁰) Specific Heat, J/kg⁰K(BTU/lb⁰F) at 600⁰ Flammability Thermal Expansion, RT400⁰C(754⁰F) Density, as supplied, gm/cc(pcf) Porosity, % Loss on Ignition, % Modulus of Rupture**, MPa(psi) as received Compressive Strength**, MPa (psi) at 10% compression Thermal Conductivity, W/m°K(BTU/hr. ft² °F/in) Linear Shrinkage, % Length/Thickness after 4 hrs. at 1200°C(2192°F) after 4 hrs. at 1400°C(2552°F) after 4 hrs. at 1600°C(2912°F) Hardness, Durometer "D"...