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Material Comparison Tool

Property Units Alumina (family) Aluminum Nitride (family) Boron Carbide (family) Silicates (family) Silicon Carbide (family) Silicon Nitride (family) Tungsten Carbide (family) Zirconia (family) Specialty (family)
  • Excellent all around performance
  • Good for wear, chemical, and electrical applications
  • High thermal conductivity
  • Electrical insulator
  • Extreme hardness
  • Low density
  • Good thermal shock resistance
  • Good electrical properties
  • Outstanding wear and corrosion resistance
  • Tailorable properties for individual applications
  • High strength and toughness
  • Excellent thermal shock resistance
  • High hardness and wear resistance
  • Severe service capabilities
  • Outstanding toughness
  • Application specific formulation
  • Uniquely designed

Coefficient of Thermal Expansion

1 x 10-6/°C

7.2 - 9.1

3.3 - 5.6 

4.5 - 4.9

3.5 - 10

3.0 - 4.8

2.9 - 4.5

5.1 - 5.9

10 - 11

Dielectric Loss (tan δ)

1MHz, 25 °C

10-4 to 0.02

10-4 to 7.7 x 10-3

-

0.002 - 7

-

10-4 to 1.2 x 10-3

-

10-3

Dielectric Strength (6.35mm)

ac-kV/mm

5.3 - 19.7

15 - 25

9.8 - 10

-

15.0 -17.7

-

9.0 - 9.4

Flexural Strength, MOR (20 °C)

MPa

250 - 1250

260 - 460

250 - 450 

20 - 170 

210 - 700

600 - 1000

900 - 2330

180 - 1720 

Fracture Toughness, KIc

MPa m1/2

3.0 - 7.3

2.75 - 6.0

3.0 - 5.0 

2.0

3.5 - 6.3

4.25 - 7.5

1.0 - 7.0 

3.5 - 13.0

Maximum Use Temperature

°C

1200 - 1800

800

1000 - 2000

1200 - 1700

1000 - 1600

1150 - 1400

103

500 - 2400

Thermal Conductivity (20 °C)

W/m K

12.0 - 37.1

80 - 205

43 - 100

2.5 - 7.3 

80 - 225

19 -100

1.4 - 100

2.0 - 2.5

Volume Resistivity (25°C)

Ω-cm

1014 to  > 1015

1011 to > 1014

103

1010 to > 1014

0.1 - 105

1010 to 1014

103

108 to 1.3 x 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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