Alumina ceramics have the characteristic of low dielectric constant, low dielectric loss, high insulation strength, high volume resistivity, good bending strength, high stability, high compressive strength, and good cold and hot shock denaturation. It is widely used in thermostats, insulating parts, various thermal equipment, electric appliances, iron structure buildings, shipbuilding, etc. of various small household appliances.
Jaye Heater Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of alumina ceramic components in China, also supports custom service. Welcome to wholesale high quality alumina ceramic components at competitive price from our factory.
Alumina ceramics have the characteristic of low dielectric constant, low dielectric loss, high insulation strength, high volume resistivity, good bending strength, high stability, high compressive strength, and good cold and hot shock denaturation. It is widely used in thermostats, insulating parts, various thermal equipment, electric appliances, iron structure buildings, shipbuilding, etc. of various small household appliances.
Alumina ceramics are divided into various types. There are mainly talc porcelain, high frequency porcelain, mullite, cordierite ceramics, thermal insulation ceramics and 95 alumina ceramics, 99 alumina ceramics. Please have a check as the followings ceramic technical parameters.
<table
| Technical Data Sheet | ||||||
Name | 99 porcelain | 95 porcelain | alumina talc | steatite | cordierite | |
Main ingredient | AL2O3≥99% | AL2O3≥95% | ZRO2≥94% | |||
Density | 3.85 | 3.6 | 5.9 | 2.6 | 2 | |
Physical properties | Water absorption% | 0 | 0 | 0 | 0 | 0 |
Sintering temperature | 1690 | 1670 | 1650 | |||
HardnessHV | 1700 | 1600 | 1400 | |||
Material properties | Flexural strength4pt | ＞3500 | ＞2900 | ＞11000 | 140 | 65 |
Compressive strengthKGF/CM2 | 30000 | 25000 | 25000 | 900 | 350 | |
Use temperature ℃ | ＜1500 | ＜1400 | ＜1600 | |||
Thermal expansion coefficient | 8 | 7.8 | 10 | 7.0-9.0 | 2.5-3 | |
Thermal characteristics | 10-6/℃ | |||||
0-1000℃ | ||||||
Thermal shock resistance T ℃ | 200 | 220 | 350 | |||
Thermal conductivity W/m.k | 31 | 22 | 3 | |||
Volume resistivityΩ.cm | ＞1012 | ＞1012 | ＞1012 | ＞1011 | ＞1012 | |
Electrical characteristics | Insulation strength KT/M | 18 | 16 | 15 | ||
Dielectric constant 1MHZ(E) | 9.2-10.5 | 9.0-10 | 12.5 | |||
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