Semiconductor Thermal Mechanical Wear Resistant Fluid Handling Electronic WC

WC Carbides Material Properties
   Trade Name   WC
   Composition Tungsten Carbide
   Color    Gray

   Property Units Test Value
   Density gm/cc ASTM-C20 14.90
   Crystal Size Microns Thin-Section
   Water Absorption % ASTM-373 0
   Gas Permeability -- --
   Flexural Strength (MOR), 20 degrees C -- --
   Elastic Modulus, 20 degrees C GPa (psi x 106) ASTM-F417 627(91)
   Poisson's Ratio, 20 degrees C -- ASTM-C848
   Compressive Strenght MPa(psi x 103) ASTM-C773 5000(725)
   Hardness GPa(kg/mm2) KNOOP 1000 gm
    Rockwell 45 N
   Tensile Strength, 25 degrees C MPa (psi x 103) ACMA TEST #4 --
   Fracture Toughness K(Ic) Mpa m1/2 NOTCHED BEAM
   Thermal Conductivity, 20 degrees C Wm degrees K ASTM-C408 100.0
   Coefficient of Thermal Expansion, 25-1000 degrees C 1 x 10-6/degrees C ASTM-C372
   Specific Heat, 100 degrees C J/kg*K ASTM-E1269 --
   Thermal Shock Resistance, (delta)Tc degrees C NOTE 3
   Maximum Use Temperature degrees C NO-LOAD COND. 1000
   Dielectric Stength ac-kV/mm (acV/mil) ASTM-D116  
   Dielectric Constant, 1MHz 25 degrees C ASTM-D150 --
   Dielectric Loss (tan delta) 1MHz 25 degrees C ASTM-D2520
   Volume Resistivity 25 degrees C ohm-cm ASTM-D1829 <103
500 degrees C ohm-cm ASTM-D1829 <103
1000 degrees C ohm-cm ASTM-D1829 <103
   Impingement -- Note 4 --
   Rubbing -- Note 4 --

This chart is intended to illustrate typical properties of advanced ceramic materials available from CoorsTek. The designer should recognize that exact properties may vary according to product configuration and can sometimes be tailored to meet specific requirements.

Contact CoorsTek for cost-effective design, development and manufacturing assistance. The information set forth herein is offered for comparison only, and is not to be construed as absolute engineering data or constituting a warranty or representation for which we assume legal responsibility.

Note 1: Data Measurements -- All data measurements are typical and made at room temperature unless otherwise noted.

Note 2: Composition Control -- All CoorsTek ceramic compositions are controlled using modern chemical spectrographic and x-ray fluorescent methods.

Note 3: Thermal shock resistance -- Test are run by quenching samples into water from various elevated temperatures. The change in temperature where a sharp decrease in flexural strength is observed is listed as (delta)Tc.

Note 4: Wear resistance -- Impingement tests are run by using a dry 240 grit fused alumina abrasive. The indices in the chart are calculated by dividing the material volume loss by the volume loss of an AD-85 alumina control. The lower in the index, the better the wear resistance.

*Ceramic property values vary somewhat with method of manufacture, size, and shape of part. Close control of values of most properties can be maintained if specified.
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