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Mullite

Composition

Al Silicate

Description

CoorsTek mullite has excellent thermal shock resistance and dielectric strength, making it ideal for electronic components for manufacturing purposes.

Example Applications

  • Ceramic tubes
  • Metal foundry filters

CoorsTek Formulations

Contact a CoorsTek expert to choose an Mullite solution for your application.

Columns
Property Units Value

Flexural Strength MOR, (20°C)

MPa

45-170

Compressive Strength, (20°C)

MPa

550 (80)

Fracture Toughness, KIc

MPa m1/2

2

Hardness, Rockwell 45N

R45N

70

Hardness, Knoop 1000gm

GPa

7.4

Maximum Use Temperature

°C

1500-1700

Coefficient of Thermal Expansion, (25-1000°C)

1 x 10-6/°C

2.8-6.7

Thermal Shock Resistance, (∆T)

°C

200-400

Thermal Conductivity, (20°C)

W/m K

0.9-3.5

Dielectric Strength, (6.35mm)

ac-kV/mm

9.8-10.0

Dielectric Constant, (1 MHz)

25°C

6

Volume Resistivity, (25°C)

ohm-cm

1010->1014

The information provided on this chart is for general material property reference only.  The customer should recognize that exact properties of materials may vary according to product configuration but close control of values of most properties can be maintained, if specified. Nothing herein is provided, or is to be construed, as absolute engineering data or constituting a warranty or representation. Contact CoorsTek for cost-effective design, development and manufacturing assistance. CoorsTek has 300+ variations including various forming and firing processes, not all variants are represented in the present website.

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