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:which curling iron is better?? Conair Ceramic or the conair Multi Pack? ?: The ceramic instant heat one will work better. I have the multi pack. It's really cheap. Plus, if you already have a straightener, why get the multi pack? Why do they even sell a curler and straightener in the same pack? After you curl it, you can't straighten in, after you straighten it, you can't curl it. P

Q:If taking up an art class during the summer, which would be more fun? Oil painting or ceramics?: Definitely ceramics. You can't do much with an oil painting class in the summer.

Q:I mean ceramic breaks so how do ceramic bearings not break?: Ceramic objects break because they are brittle and subjected to shock, but ceramic material can be hard and strong in compression. So a properly designed bearing will provide a smooth running lubricated surface and take considerable force and if spring mounted will not be subject to high instantaneous force because its mount will move away.

Q:lots of ceramic magnets: Ceramic Magnets For Sale

Q:Are ceramic fibers the same as aluminum silicate fibers?: Aluminum silicate is in accordance with the chemical title, SI, O, AL is its main component; and the main component of ceramic is also the above three components, so the use of ceramic fiber is more user-friendly

Q:My family just got a stove with ceramic stove top.You know the one with no burners, it‘s just flat .What can i or can‘t I put on the stove that won‘t damage it?: Your question is not clear. do you mean to clean it or pots and pans. to clean it, you should use a creamic stove top cleaner or soft scrub. A sharp razor blade will work to scrape off any cooked on food and then use the cleaner. as far as pots and pans go, any type will be fine. some may cause brown burnt on spots. It is a matter of trying different ones, Hope this helped

Q:What kind of work does ceramic factory have?: In fact, there are many types of work, the security is to do finance or cashier!!! There are business managers, although less income, but safe ah, finance, exhibition hall, laboratory testing, quality inspection, but do not do decals, decals that water, water, toxic, contact more, will have cancer.

Q:good ceramic irons?: If it hasn't been in an accident, then the front tire is worn, out of balance, etc. You might have something loose in the steering neck, but you didn't tell us what year or how many miles or anything else that might help figure it out.

Q:Glass and ceramics are two forms if silicon dioxide covalent network. Outline how differences in structure cause differences in the properties of these materials form quartz crystals in sand and clay.: Quartz crystals are exactly that crystals with a well organized structure. Glass is an amorphous solid of silicon dioxide and other metal oxides without an organized structure and ceramics are other materials with vitrified (glass like) connections holding them together.

Q:HI. i take sculpture at my highschool, and we‘re doing ceramics for the first semester, and so far i‘ve gotten really positive feed back and i‘m really happy with what i‘ve done so far.so i was thinking about making some things for christmas presents this yearbut i need help with materials. i know i can get all the tools at the local micheals, but what about clay, glaze and kiln access?any help would be appreciated :] thankyou.: It hasn't been suddenly. It might seem that way if you've only recently been paying attention. People have been selling these gimmick items to suckers for a long, long time.

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