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	Drainage Elements UHMW - Polyethylene Coldwater Ceramic OptiForm MultiPulse Foil JetMender CUSTOMER LOGIN User Name:   Password:   Login Phone: +1(404)344-0314 Fax: +1(404)344-0914 Email: info@coldwaterseals.com		Coldwater Ceramic Coldwater Ceramic elements are Full-Top ceramics manufactured in a composite assembly, mechanically locked and epoxy bonded to a FRP base to match the thermal expansion of the ceramics and prevent piano keying. AL-Oxide Our 99.5% pure Al-Oxide is a great value. The 99.5% purity is higher than most competitive products, typically 96%, producing a harder surface and longer life. Silicon Nitride Our SN-Nitride is superb for thermal shock resistance and has the lowest coefficient of friction. SN provides the best fabric life of any ceramic used on a paper machine. More expensive than AL-Oxide up front, but typically provides less expensive lifecycle costs with the improved clothing life. Silicon Carbide Our Silicon Carbide has the highest wear resistance for high speeds or abrasive environments. We also offer grinding and repair services for all makes of ceramics. Available in 99.5% pure AL-Oxide, Silicon Nitride, or Silicon Carbide for hydrofoils, vacufoils, flat suction box covers and forming elements. Technical Data   Alumina Silicon Nitride Silicon Carbide MATERIAL CODE CONDITION UNITS 99.5AL SN220 SC2000 BULK DENSITY   g/cc 3.8 3.2 3.1 WATER ABSORPTION   % 0 0 0 HARDNESS Hv GPa 16.1 13.7 26.0 Hv kg/mm2 1650 1400 2650 FLEXURAL STRENGTH Room Temp. MPa 320 550 400 1000 oC MPa   496 - 1400 oC MPa - - - FRACTURE TOUGHNESS Room Temp. MPam1/2 3.5 5.7 4.0 YOUNG'S MODULUS   GPa 363 291 410 POISSON'S RATIO Room Temp.   0.23 0.28 0.14 THERMAL EXPANSION 40-400 oC x10-6/ oC 7.1 2.5 4 THERMAL CONDUCTIVITY Room Temp. W/m*K 32 20 103 1200 oC W/m*K - 13 - SPECIFIC HEAT Room Temp. J/g*K 0.75 0.66 0.67 HEAT SHOCK RESISTANCE   oC 200 550 350 Note: The values are typical material properties and may vary according to the product's configuration and manufacturing process.

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