95% Alumina Ceramic Ring offers high hardness, mechanical strength, temperature stability, thermal conductivity, insulation, and corrosion resistance. It is an excellent material for various applications such as mechanical seals, electronics, instrumentation, etc. Heeger Materials provides top-quality Al2O3 Ceramic rings at competitive prices, offering specialized and customized services.
Alumina (Al2O3) Ceramic Ring consists of high-purity alumina (Al₂O₃), providing outstanding strength, hardness, and thermal stability. Recognized for their excellent electrical insulation, resistance to high temperatures, oxidation, and corrosion, alumina ceramics are extensively utilized in extreme conditions. These rings are perfect for uses that need durability and structural integrity, including mechanical seals, sensors, electronics, and instrumentation. Moreover, alumina ceramic rings are used in sectors such as communications, transportation, and engineering because of their robustness and high-performance qualities. Their capacity to endure harsh conditions renders them vital for crucial parts in challenging applications.
95% Alumina Ceramic Ring offers high hardness, mechanical strength, temperature stability, thermal conductivity, insulation, and corrosion resistance. It is an excellent material for various applications such as mechanical seals, electronics, instrumentation, etc. Heeger Materials provides top-quality Al2O3 Ceramic rings at competitive prices, offering specialized and customized services.
Alumina (Al2O3) Ceramic Ring Advantages
High-temperature resistance
Good gear resistance
Good corrosion resistance
High hardness
Low thermal expansion
Low friction coefficient
Alumina (Al2O3) Ceramic Ring Applications
Used as seal rings in packaging equipment and high-temperature environments.
Used as insulators in electrical components, such as high voltage insulators, spark plugs, and electrical connectors.
Used in heating elements and furnace components due to their excellent thermal conductivity and resistance to high temperatures.
Used for making parts for CVD, ion implants, photolithography, and semiconductor parts.
Used as a material for the chemical industry due to its high corrosion resistance.
Alumina Ring Material Parameters
Property
Unit
AL2O399.7
AL2O399.5
AL2O399
AL2O395
Purity
—
99.7%
99.5%
99%
95%
Density
g/cm3
3.92
3.9
3.8
3.7
Bending Strength
MPa
375
370
340
304
Compressive Strength
MPa
2450
2300
2250
1910
Elastic Modulus
GPa
380
370
330
330
Fracture Toughness
MPam1/2
4.5
4.3
4.2
3.8
Hardness
HRA
91
91
90
89
Vickers Hardness
HV1
1600
1550
1450
1400
Thermal Expansion Coefficient
10- 6 K-1
7.8
7.8
7.7
7.5
Thermal Conductivity
W/mk
32
32
25
25
Thermal Shock Stability
△T.℃
220
220
200
200
Maximum Operating Temperature
℃
1750
1750
1700
1500
Volume resistance at 20℃
Ω·cm
1015
1015
1014
1014
Dielectric Strength
KV/mm
22
20
16
15
Dielectric Constant (room temperature)
/
10
11
11.5
11
MHz Dielectric Loss Factor
tan δ
1×10-3
1×10-3
3×10-3
3×10-3
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