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Item # Porcelain, Dense Ceramics - Alumina, Mullite, & Zirconia (3200ºF - 3600ºF Range)



Fully Dense Porcelain, Mullite, Alumina, Zirconia, Silicon Carbide, and Tungsten Carbide are gas-tight high-fired ceramics capable of withstanding operating temperatures of 2550ºF (1400ºC) to 3182ºF (1750ºC). These compositions are available in the forms of extruded and cast tubing, rods, plates, fish spine beads, lab ware, and custom molded shapes.




Specifications  · Mechanical Properties  · Thermal Properties  · Electrical Properties

Specifications

Material

Alumina


Mechanical Properties

Density

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2.40 g/cc

Water Absorption

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0 %

Color

White

Flexural Strength (MOR) at 20ºC

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130 MPa
19 x 103
psi

Elastic Modulus at 20ºC

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104 GPa
15 x 103
psi

Compressive Strength at 20ºC

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590 MPa
86
psi

Knoop Hardness at 1000gm

5.9 GPa
600
kg/mm²

Rockwell Hardness at 45 N

60

Fracture Toughness K(Ic)

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2 MPa m1/2


Thermal Properties

Thermal Conductivity at 20ºC

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5.0 W/m-ºK

Coefficient of Thermal Expansion at 25-1000ºC

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9.5 x 10-6 Per ºC

Maximum Use Temperature

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1400 ºC


Electrical Properties

Dielectric Constant at 1 MHz & 25ºC

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5.9

Dielectric Loss (tan delta) at 1 MHz & 25ºC

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0.0024


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