High Purity Alumina Ceramic Tube Used in Industry

High Purity Alumina Ceramic Tube Used in Industry

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Loading Port:: Guangzhou

Payment Terms:: TT OR LC

Min Order Qty:: 100 pc

Supply Capability:: 100000 pc/month

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Product Description

Alumina ceramic is the most mature of the engineering ceramics, offering excellent electrical insulation properties together with high hardness and good wear resistance but relatively low strength and fracture toughness. Alumina has a high melting point, high hardness, although mechanical strength is reduced at temperatures above 1000 C. Due to the relatively large coefficient of thermal expansion, thermal shock resistance is reduced.

Alumina is also an electrically insulating material, with a high electrical resistivity, increasing with purity. Good chemical stability of alumina leads to high corrosion resistance as well. It is insoluble in water and only slightly soluble in strong acid and alkaline solutions. Testing has shown that the low chemical solubility of alumina ceramics components makes them highly resistant to chemical corrosion. This is what makes high purity alumina the material of choice for components in a wide range of industrial applications.

Ceramic tubes are used when electrical insulation is necessary in high heat applications. This makes them useful for supporting electric heating elements in ovens, heaters and furnaces. Ceramics hold their shape and size under pressure. This is important in switching applications where the ceramic is used to open and close electrical contacts in a thermostat or pressure switch. Ceramic parts are very abrasion resistant and offer long life in applications where other materials would wear out quickly.

Main Physical Properties:

1. Good electrical insulation
2. High mechanical strength
3. Excellent wear resistance
4. Excellent corrosion resistance
5. Low dielectric constant

Main Applications:

1. Pump seals and other components
2. Wear resistant inserts
3. Insulating washers or bushings
4. Semiconductor components
5. Aerospace components
6. Automotive sensors
7. Electrical or electronic insulators

Data Sheet

Characteristics	Unit	95 Al2O3	99 Al2O3	ZrO2	GPSi3N4	BN	Glass Ceramic
Crystal Structure	-	hexagonal	hexagonal	tetragonal	hexagonal	hexagonal	-
Color	-	white	ivory	white	gray	white	white
Density	g/cm³	3.65	3.88	5.95	3.22	2.26	2.55
Water Absorption	%	0	0	0	0	0.0-1.0	0
Young's Modulus	Gpa	280	350	205	295	670	65
Vickers Hardness	Gpa	14	20	12	18-20	-	-
Flexural Strength	Mpa	280	300	900	650	51	100
Compressive Strength	Mpa	2000	2500	2200	2200	230	500
Thermal Conductivity	W/(m•K)	18-25	30	2.2	25	20	1.70
Thermal shock resistance	ΔT(C°)	220	180-200	280-350	450-650	>1500	25-100
Max. Working Temperature	C°	1500	1700	850	1200	960	800
Volume Resistivity	Ω . cm	>10^15	>10^14	>10^12	>10^14	10^13	10^16
Dielectric Constant	-	9.50	9.80	26	8.20	4.08	6.02
Dielectric Strength	kV/mm	16	22	-	16	375	40

FAQ

We have organized several common questions for our clients, may help you sincerely：

--------What is the application of Ceramic Tubes?

1. Pump seals and other components
2. Wear resistant inserts
3. Insulating washers or bushings
4. Semiconductor components
5. Aerospace components
6. Automotive sensors

----------What advantages of Ceramic Tubes?

1. Good electrical insulation
2. High mechanical strength
3. Excellent wear resistance
4. Excellent corrosion resistance
5. Low dielectric constant

Q:ive heard it is better to go with ceramic headers over something like stainless steel or chrome ? does anyone know if this is a true statement? i guess the ceramic ones are supposed to hold in the heat better?: Those that come ceramic coated like DC and such will rust and crack. It may be true that they hold heat better but as the car moves, the heat also moves. Hence, it wont matter too much. Stainless steel doesn't hold in heat but does give that nice bronze shine when heated. I believe a header used for a daily driving shouldn't hold in heat as that will cause cracking by the welds and shorten its' lifetime. It's also resistant to rust. If you really want to hold in heat, use header wrap. They'll work a lot better than a ceramic coat.

Q:What do you mean by a ceramic cup in a fish bowl?: Is it a ceramic ring?. Nitrifying bacteria can adhere to it and grow on it.

Q:I was looking at my ceramic plates and such and i became very curious about how it was made. I take a ceramics class so I am aware of how to make plates and bowls on the wheel, but i was just wondering if they are made through machines or something when they have to mass produce them. i just can‘t picture thousands of people sitting in a room full of ceramic wheels, just making plates all day. If anyone actually knows, I‘d be very interested to find out :].: How To Make Ceramic Plates

Q:There are few companies that make ceramic knives, and they‘re more expensive that most standard steel ones. Are they worth the money over a Wusthof of other high-end knife? I know sushi chefs swear by them.: The answer to that depends on what type of cooking you do and the quantity that you usually prepare. For minor slicing and dicing chores, I don't think the clean-up time afterwards justifies the use of the machine. I'll just haul out the old paring knife and be done with it. Also, I've never found a food processor yet that does an excellent job of slicing things uniformly and well. But if you routinely make things that involve a lot of grating (cheese or chocolate, for example) or prep work, that's when the food processor comes into its own. I hate scraping my knuckles on the old-fashioned metal graters. (Is that why they call them hand graters, I wonder?) The food processor can do that task a lot more efficiently than I can. If you don't do a lot of cooking or are cooking in small quantities, your best bet may be a mini food-processor. You can use them for everything from grating small amounts of cheese to pulverizing spices and coffee beans. Get a good one with a strong motor so it will stand up to a little heavier usage.

Q:Want to buy some wine wine, bubble drugs do just do not know is good or ceramic glass?? What about regular wine, good glass or good ceramics?: Hello! Both ceramic and glass can soak medicinal wine. Visible medicine and wine in glass. Pottery and porcelain cannot be seen with medicine or wine. It does not affect the quality of medicinal liquor.

Q:Last time I went hiking, we were out of water and seriously considering refilling from the river next to us, when a guy came by with a hand-pumped portable water filter and let us borrow it to fill up our bottles. I thought this was really cool, and looked into buying one. Turns out there are several kinds (and many are expensive!). I don‘t want to end up sick because I chose the wrong water filter. Is there a difference between what the UV light water filters and the ceramic water filters protect you from? Which one should I bring along for day hikes?: What are the code numbers?

Q:ceramic hair irons functions as a quick-heating material?: Ceramic hair irons are hair styling tools that beautifies the hair with care. In this modern and busy world, people no longer have enough time to do a lot of things and that includes staying in front of the mirror for 30 minutes to fix their hair. This tool is in demand because busy women can look sexy, glamorous and stylish in just a couple of minutes. Why stay in front of the mirror for 30 minutes to fix your hair when you can finish setting your hair up in less than 10 minutes? The ceramic element in ceramic hair irons functions as a quick-heating material which is safe to use for all types of hair. The heat is distributed evenly on the smooth ceramic plate which prevents overheating. This can be used anytime without creating hair damage or hair loss. Another great feature of Ceramic hair irons is that it is very easy and light to use. You can hold the handle of the device for several minutes without burning your hands.

Q:I‘m looking into buying a new flat iron, and saw this babybliss iron. It has really good reviews. ofcourse there are some that are not that good but overall the rating was good, although it caught my attention that the plates are titanium.so I was wondering if that‘s better than ceramic. I mean I have medium/long thick hair, but of course I don‘t want something that‘s going to burn my hair or melt my ends. I know straightening does cause the ends to split but over time, not in one use!: CERAMIC!!! titanium is not good for your hair.i don't remember all the reasoning behind it. my hair dresser gave me this tip. ceramic, i guess is wayyyyy better for your hair. be sure to use heat protectant spray too!

Q:Is nano ceramic soil rubber or earth?: You check the Internet definition colloid will know, the main component of nano ceramics or silicate, but is the result of special process makes the Portland relatively high purity, screening out the beneficial ingredients of the ceramic, there are a lot of harmful ingredients detrimental to the performance of ceramic soil directly fired ceramics. Glass glue is another kind of chemical composition.

Q:Why not glazed ceramic tiles can be used for outdoor: Because the glazed ceramic tiles with smooth surface, no affinity for water, easy to form a water film (based on this, the most easy to clean tile), a large area for outdoor public places (plane) will cause unnecessary loss or accident.Because such tiles have very high light, refractive index, reflectivity. Can cause light pollution or visual fatigue indirectly. Such tiles are generally used in small areas such as toilets, relying on their excellent reflection rate, refractive index, permeability, and create a bright environment.As for baking, baking, brush glazed printing process, its thickness is very thin, very easy to cause scratches, potholes and other mishap. Once the scratch is difficult to repair, and perception is very poor, so for the outdoor actually is a waste.

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