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Rulon Bearings

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CeramTec DN 70 Dispersion Ceramic, Al2O3-ZrO2
Categories: Ceramic; Oxide; Zirconium Oxide

Material Notes: DN 70 is a ZTA Alumina Toughened Zirconia.

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Physical PropertiesOriginal ValueComments
Density 4.01 g/ccDIN EN 623-2
Water Absorption 0.00 %Open Porosity; DIN EN 623-2
Permeability 0.00%, Gas
Weibull Modulus 10DINV ENV 843-5
 
Mechanical PropertiesOriginal ValueComments
Vickers Microhardness 1700HV1; DINV ENV 843-4
Tensile Modulus 360 GPaYoung's; DINV ENV 843-2
Flexural Strength 450 MPaDIN EN 843-1
Compressive Strength 2700 MPaDIN 51067T1
Poissons Ratio 0.23DINV ENV 843-2
Fracture Toughness 4.40 MPa-m½KIC (SEVNB); DIN CEN/TS 14425-1
Shear Modulus 146 GPaCalculated
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 500000 ohm-cm
@Temperature 400 °C
IEC 672-1
 1.00e+14 ohm-cm
@Temperature 20.0 °C
IEC 672-1
Dielectric Constant 10
@Frequency 1e+6 Hz
IEC 672-1
Dielectric Strength 16.0 kV/mmIEC 672-1
Dielectric Loss Index 0.0040
@Frequency 9.00e+9 Hz
IEC 672-1
 
Thermal PropertiesOriginal ValueComments
CTE, linear 7.00 µm/m-°C
@Temperature 20.0 - 400 °C
DIN EN 821-1
 9.00 µm/m-°C
@Temperature 20.0 - 1000 °C
DIN EN 821-1
Specific Heat Capacity 0.800 J/g-°CDINV ENV 821-3
Thermal Conductivity 15.0 W/m-KDIN EN 821-2
Maximum Service Temperature, Air 1500 °C
Maximum Service Temperature, Inert 1500 °C
 
Descriptive Properties
Ra = Arithmetic Mean Roughness Value (µm)<0.15
Thermal Shock Resistance R1 (K)134calculated; R1 = [σs (1-µ)] / (α·E)

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CCERA908 / 107508

Master Bond adhesives

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