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Direct Sintered Silicon Carbide



direct sintered silicon carbide overview

Direct sintered silicon carbide is extremely resistant to chemical corrosion. Combined with a high maximum use temperature and hardness allows for use in both armor and highly corrosive environment applications.

Example Applications

  • Optics
  • Hard faced seal components


CoorsTek Formulations

Contact a CoorsTek expert to discuss custom manufactured solutions from Direct Sintered Silicon Carbide to fit your application.

Property Units Value

Flexural Strength, MOR (20 °C)


410 - 645

Fracture Toughness, KIc

MPa m1/2

3.5 - 4.0

Thermal Conductivity (20 °C)

W/m K

100 - 170

Coefficient of Thermal Expansion

1 x 10-6/°C

3.0 - 4.5

Maximum Use Temperature


1400 - 1600

Dielectric Strength (6.35mm)



Dielectric Loss (tan δ)

1MHz, 25 °C


Volume Resistivity (25°C)


102 to 105

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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