alumina ceramic leco crucible
Could be customized based on your requirements or drawing.
1. AL2O3 ceramic and zirconia ceramic
2. design as customers requirement
3. good heat resistance(1500c), plasma resistance.
4. electric insulation,wear resistance and chemical stability.
Pan head
Pan head gas hole
Hexa head(bolt)
Hexa Socket Cap
Hexagon Nut
Material: Alumina ceramic or zirconia ceramic.
Alumina is the most well known ceramic material, alumina has superior electric insulation, wear resistance and chemical stability. And it has good heat resistance(1500c) and plasma resistance. The usage are precision machinery parts( vacuum chucks,line guides of electrical resistance) surface plates(XY tables, air slides) etc.
Zirconia ceramic is one of the most useful ceramic materials. It has superior mechanical strength and wear resistance ,its tenacity is 3-4 times that of alumina and it offers superior heat insulation.
Application:The usage is blaco for heat insulation, guide spacer, nozzles, metal fittings, pump parts.
Item | Test Condition | Unit Symbol | 95%Alumina ceramics | 99%Alumina ceramics | 99.7%Alumina ceramics |
The main chemical ingredient | Al2O3 | Al2O3 | Al2O3 | ||
Bulk Density | g/cm3 | 3.6 | 3.89 | 3.96 | |
Maximum Use Temperature | 1450°C | 1600°C | 1650°C | ||
Water absorption | % | 0 | 0 | 0 | |
ROHS Hardness | ≥85 | ≥89 | ≥89 | ||
Flexural strength | 20° C | MPa (psi x 103) | 358 (52) | 550 | 550 |
Compressive Strength | 20° C | MPa (psi x 103) | 2068 (300) | 2600(377) | 2600(377) |
Fracture Toughness | K(I c) | Mpa m1/2 | 4-5 | 5.6 | 6 |
Coefficient of thermal expansion | 25-1000° C | 1X 10-6/°C | 7.6 | 7.9 | 8.2 |
Coefficient of thermal conductivity | 20° C | W/m °K | 16 | 30.0 | 30.4 |
Thermal Shock Resistance | Tc | °C | 250 | 200 | 200 |
Dielectricity constant | 1MHz.25°C | 9 | 9.7 | 9.7 | |
Dielectric strength | ac-kV/mm (ac V/mil) | 8.3 (210) | 8.7 (220) | 8.7 (220) | |
Volume Resistivity | 100°C | ohm-cm | > 1013 | > 1014 | > 1014 |
Alumina ceramics
Alumina Ceramic may be used in applications that require high elevated temperatures, excellent electrical resistance, wear or corrosion resistance, High dielectric strength, high temperature capability. High Electrical insulation.
Zirconia ceramics
Zirconia (ZrO2) is a unique advanced ceramic. Products manufactured from zirconia powder exhibit superior mechanical properties such as high strength and flexibility.
Steatite ceramics
Steatite is a good high voltage insulator. It holds up under thousands of volts without breaking down.
Steatite is used to support heating elements in electric heaters, toasters, and ovens.
Cordierite ceramics
The main chemical ingredient of cordierite ceramic is 2MgO·2Al2O3·5SiO2, main material is steatite, clay, alumina, feldspar, etc. Manufactured by normal ceramic technic, can be used for loop frame work, insulators of arc-resistance, element of composite materials, burnable nozzle of electrical insulators, etc.
RISEN is one of the leading high quality quartz glass and precise ceramics manufactuer supplier in China. product range: alumina ceramics, zirconia ceramics,cordierite ceramics ,steatite ceramics and etc. The main category includes wearable ceramics,electrical ceramics,textile ceramics, heating ceramics,honeycomb ceramics and so on.With the advantages of high wearable, high strength and good insulation, our products are widely used in the fields of mechanical ,electronics, chemical ,textile, aeronautic and other fields.
1.will replenish for free if it break in the transparent when you entrust us to arranged the delivery
2.perfect repairment system and technical guidance during the usage
3.Give enough suggestion about your design
4.Help making the drawing
1.Q: How can I get some samples?
A: we can offer it free If have sample in stock, However, you need to afford the freight charge. If it is need to be customized, we will charge you some fees without profit.
2.Q: How can I place the order to you?
A: You can contact us by TradeManage and send the inquiry through Alibaba.Also can place the order on line or through Aliexpress are all ok.
3.Q: How can I pay for you?
A: T/T, L/C, West Union and Aliexpress credit card payment.
4.Q:How to protect my product?
A:We have more than 10years export experience and have received high recognition and praise from our customers.We have many skilled workers and they know how to protect the product. During the 10 years, there's no breaking.
5. Q: How to send the product to me?
A: By ocean, air or by express.
6. Q: Can you offer door to door service?
A: We have much experience in door to door service and price is competitive.
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