Wear Resistant Alumina Al2o3 Ceramic Ring Ceramic Gasket

Features of alumina ring:

1.High mechanical strength;

2.High hardness;

3. Low high-frequency dielectric loss;

4. High high-temperature insulation resistance

Alumina Ceramic ring:

Alumina, also known as Aluminum Oxide, is a hard wearing advanced technical ceramic material frequently used in a wide variety of industrial applications. Once fired and sintered, it can only be machined using diamond-grinding methods.

Aluminia washer:

Alumina is an excellent high temperature ceramic material due to its high temperature stability. It is the most commonly used type of advanced ceramic and is available in purities ranging from 95 – 99.9%.

颜色

Color

White

白色

White

白色

White

白色

Ivory White

象牙白

White

白色

体积密度

Volume density(g/cm3)

3.45

3.5

3.7

3.75

3.9

吸水率

Water Absorption

0

0

0

0

0

抗弯强度

Flexural Strength

300MPa

300MPa

320MPa

330MPa

330MPa

维氏硬度

Vickers hardness

1300

1400

1400

1800

1800

介电常数

Dielectric Constant (at 1MHZ 25℃)

10

10

10

10

10

弹性模量

Modulus of elasticity

350GPa

350GPa

350GPa

370GPa

370GPa

热导率

thermal conductivity (30℃)

18W/(m·K)

24W/(m·K)

24W/(m·K)

25W/(m·K)

28W/(m·K)

体积电阻率

Volume resistivity

10¹⁴Ω•cm

10¹⁴Ω•cm

10¹⁴Ω•cm

10¹⁴Ω•cm

10¹⁵Ω•cm

介电强度

Dielectric strength

20KV/mm

20KV/mm

20KV/mm

20KV/mm

30KV/mm