Products

Alumina Ceramic Rings

Short Description:

Alumina Ceramic Rings

 

Alumina Ceramic is the widely used technical ceramic materials. It has high wear resistance, high mechanical strength, high temperature resistance, good thermal shock resistance, excellent electrical insulation. It is usually used for electrical insulators, wear resistant parts, ceramic parts for high temperature furnace etc. Alumina Ceramic can be made by different purities like 95%, 96%, 99%, 99.5%, 99.7% etc, their properties will have little difference accordingly. Leap industry provide different purity Ceramic what can be fit for the different requirement application area.


Product Detail

FAQ

Product Tags

ceramic-sleeve(1)

 

Technical Parameters

Operating Limits Units Alumina Ceramics Alumina Ceramics
Alumina Content wt% ≥ 99 ≥ 95
Volume Density g /cm3 3.85 3.7
Hardness  (HRA) HRA ≥ 88 86
Compressive Strength MPa ≥ 400 300
Maximum Temperature ℃  1500 1500
Air Tight Test   Pass Pass
Thermal Shock Test   Pass Pass
Coefficient Of Heat Expansion ×10-6/℃ 8.2 7.5
Dielectric Constant εr20℃, 1MHz 9.2 9
Dielectric Loss tanδ×10-4, 1MHz 2 3
Volume Resistivity Ω·cm 20℃ 1014 1013
Puncture Strength KV/mm , DC≥ 20 20
Acid-resistance mg/cm2 ≤ 0.7 7
Alkali-resistant mg/cm2 ≤ 0.1 0.2
Abrasion Resistance g/cm2 ≤ 0.1 0.2
Compressive Strength M Pa ≥ 2800 2500
Flexural Strength M Pa ≥ 350 200
Elastic Modulus G Pa 350 300
Poisson’s Ratio   0.22 0.2
Thermal Conductivity W/m·K( 20℃) 25 20

 

 


  • Previous:
  • Next:

  • Related Products