99% 99.5% оксид бериллия керамический лист/трубка/труба BeO
99% 99.5% оксид бериллия керамический лист/трубка/труба BeO
99% 99.5% оксид бериллия керамический лист/трубка/труба BeO
99% 99.5% оксид бериллия керамический лист/трубка/труба BeO
99% 99.5% оксид бериллия керамический лист/трубка/труба BeO
99% 99.5% оксид бериллия керамический лист/трубка/труба BeO
99% 99.5% оксид бериллия керамический лист/трубка/труба BeO

99% 99.5% оксид бериллия керамический лист/трубка/труба BeO


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Описание и отзывы


Трекер стоимости

Месяц Минимальная цена Макс. стоимость
Sep-15-2025 0.82 $* 0.50 $*
Aug-15-2025 0.83 $* 0.35 $*
Jul-15-2025 0.27 $* 0.94 $*
Jun-15-2025 0.35 $* 0.95 $*
May-15-2025 0.82 $* 0.86 $*
Apr-15-2025 0.46 $* 0.44 $*
Mar-15-2025 0.48 $* 0.37 $*
Feb-15-2025 0.75 $* 0.39 $*
Jan-15-2025 0.60 $* 0.47 $*

Характеристики



Product Description






Beryllia ceramics/Beryllium oxide ceramics

Beryllium oxide ceramics are ceramics with beryllium oxide as the main component. Mainly used as a substrate for large-scale integrated circuits, high-power gas laser tubes, heat sink shells for transistors, microwave output windows and neutron moderators.

Characteristics of beryllium oxide ceramics

Pure beryllium oxide (BeO) belongs to the cubic crystal system, and its density is 3.03g/cm3. The melting point is 2570ºC, it has high thermal conductivity, the thermal conductivity λ is 200-250W/(m.K), and it has good thermal shock resistance. Beryllium oxide ceramics are made of beryllium oxide powder as raw material, alumina and other ingredients are added and sintered at high temperature.

The melting temperature range of beryllium oxide is 2530ºC~2570ºC, and its theoretical density is 3.02g/cm3. It can be used for a long time at 1800ºC in vacuum, 2000ºC in inert gas, and 1800ºC in oxidizing atmosphere. ºC to volatilize. The most outstanding performance of beryllium oxide ceramics is its large thermal conductivity, which is similar to that of metal aluminum and 6 to 10 times that of aluminum oxide. It is a dielectric material with unique electrical, thermal and mechanical properties.

Application of beryllium oxide ceramics

Beryllium oxide ceramics are widely used in microwave technology, electric vacuum technology, nuclear technology, microelectronics because of its high thermal conductivity, high melting point, strength, high insulation, low dielectric constant, low dielectric loss and good packaging process adaptability. It has been valued and applied in the field of optoelectronic technology, especially in high-power semiconductor devices, high-power integrated circuits, high-power microwave vacuum devices and nuclear reactors. It has always been the mainstream ceramic material for preparing high thermal conductivity components.


Specification


Item
Test Conditions
Specification
Unit
B-97
B-99
Dielectric Constant
1MHz
6.90.4
6.90.4
(100.5)GHz
Dielectric Loss Tangent
1MHz
≤4X 10-4
≤4X 10-4
(100.5)GHz
≤8X 10-4
≤8X 10-4
Volume Resistivity
25ºC
≥1014
≥1014
Ω.cm
300ºC
≥10"
≥10"
Breakdown Strength
D C
≥15
≥20
kV/mm
CMOR
-
≥170
≥190
MPa
Average Linear Expansion Coefficient
25ºC~500ºC
(7.0~8.5)*10-4
(7.0~8.5)*10-4
I/K
Thermal Conductivity
25ºC
≥200
≥240
W/m.K
100ºC
≥160
≥190
Thermal Shock Resistance
0ºC-800ºC
There should be no cracks
Bulk Density
≥2.85
≥2.85
g/ cm3
Chemical Stability
1:9HCL
≤0.3
≤0.3
Mg/cm2
10% NaOH
≤0.2
≤0.2
Air Tightness
-
≤10*10-11
≤10*10-11
Pa. m3/s
Average Grain Size
-
12~30
12~30
μm


Packing & Delivery




To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.




Company Profile






Rongsheng Refractory is located in Xinmi city, the "Capital of Refractory" in China. We specialize in refractory products for nearly 30 years, covering a full range of shaped and unshaped refractory products, such as High Alumina Series Bricks, Mullite Bricks, Corundum Series Bricks, Silica Series Bricks, Andalusite Bricks, Magnesia Series Brick, Carborundum Brick, Insulating Series Brick, Insulating and Dense Castables, also other related products for more sophisticated applications. 280 workers, 20000 square meter workshop, 30 years experience, CE & ISO9001/2008 certificated, biggest raw refractory material original area in China, this is how we keep good quality and reliable cooperation for global valued customers.

After nearly 30 years of innovation, Rongsheng Refractory has developed into a large-scale group enterprise known as a collection of science, industry and trade all over the world. Cooperate with many universities to establish research and development center, professional customer service and technology continuous tracking, can provide customers with differentiated, serialized, customized refractory products and services.

Believe that you will be the same as the customers which are from more than 30 countries and regions all over the world, and think it is so wise to choose Rongsheng Refractory, Rongsheng is here for you at any time. Welcome your inquiry.




FAQ


1. who are we?
We are based in Henan, China, start from 2018,sell to Western Europe(20.00%),Southeast Asia(10.00%),Eastern Europe(10.00%),Africa(10.00%),Domestic Market(5.00%),South Asia(5.00%),Southern Europe(5.00%),Northern Europe(5.00%),Central America(5.00%),North America(5.00%),Eastern Asia(5.00%),Mid East(5.00%),Oceania(5.00%),South America(5.00%). There are total about 201-300 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Refractory Brick,Refractory Castable,Refractory Cement,Graphite Electrode,Refractory products

4. why should you buy from us not from other suppliers?
280 workers, 20000 square meter workshop, 30 years experience, CE&ISO9001/2008 certificated, biggest raw refractory material original area in China, research and development center, professional customer service and technology continuous tracking.

5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,Express Delivery；
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow;

Language Spoken:English,Chinese,Spanish,Japanese,Portuguese,German,Arabic,French,Russian,Korean,Hindi,Italian


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