Material:95-99%Al2O3 Characteristics: Wear-resisting performance is good This ceramic grinder used on the coffee/pepper grinder,which has good corrosion resistance, high operating temperature, good mechanical characteristics, high wear resistance, high hardness, high thermal shock resistance. Environmental friendly, Safe, wearable, durable These products are widely used for various kinds pepper grinders, salt grinders,coffee grinders and other grinders, the grains ground are equal size and show fresh and fragrant taste and colour. These products are fully burned with 95% AL2O3 and environmental friendly, safe, wearable, durable and with good anti-shock performance. We specilize in manufacturing them as per your size,welcome your contact.
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
Main Raw Materials
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.
Our Company
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
Packing & Delivery
FAQ
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.
