Product Attributes

Model No.: Customized

Brand: Jinghui ceramics

Place Of Origin: China

Types Of: Electrothermal Ceramics, High Frequency Ceramics, Dielectric Ceramics, Insulating Ceramics

Material: Alumina

Product Name: 99% Alumina

Forming Method: Dry Pressed

Density: Over 3.80g/Cm3

Appearance: Without Contamination, Free Of Pinholes

Secondary Process: Diamond-Like Fine Grinding

Certificate: Fda, Lfgb, Rohs

Usage: Ceramic Protection Tube For Food Industry

Supply Ability & Additional Information

Packaging: Export carton

Productivity: 100,000 sets/month

Transportation: Ocean,Land,Air

Place of Origin: China

Supply Ability: 500,000 sets/month

Certificate: RoHS

HS Code: 6914100000

Port: Shenzhen Port,HK Port

Payment Type: T/T,Paypal,Western Union

Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,CIP

Packaging & Delivery

Selling Units:

Piece/Pieces

Package Type:

Export carton

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Large Size 99.5% Aluminum Oxide Ceramic Tube

The description of aluminum oxide ceramic tube

Aluminum oxide ,also known as alumina (al2o3). As its wide range availability and properties than other advanced ceramics, Al2O3 is very often used for the manufacture of variety of ceramic components.
Due to its hardness and high wear resistance, alumina is often used as a grinding or polishing agent. As the melting temperature is above 2000 ° C, the material is ideal for use as a refractory material. In electrical engineering Al2O3 is used because of the low dielectric loss factor and the high electrical insulation and dielectric strength. The applications range from sealing discs in taps to implants to ballistic protection made of aluminum oxide.
The properties of the material aluminum oxide are strongly influenced by the purity and the manufacturing process. As the proportion of alumina increases, the hardness, corrosion resistance, dielectric strength and thermal conductivity of the material increase, but the thermal shock resistance decreases. Currently, the regular purity we have include 75%, 85%, 95%， 99% and 99.5% and 99.8%. We have sufficient expertise to deal with different purities in order to cater to special technical needs.

The specification of the Alumina Ceramic Tube

1. Forming methods: dry pressed, hot pressed, extrusion, ceramic Injection molding, Isostatic pressed

2. Material options: alumina ( purity range from 95% to 99.8%), zirconia,silicon nitride, boron nitride

3. Dimension capability: the min. inner diameter can be 1mm, the max. outer diameter up to be 800mm

4. Available design: both ends open, one end closed, multiply holes, side-slot, steps, threaded, half tubes.

5. Tolerance: outer diameter can be 0.005mm, inner diameter can be 0.01mm, overall length can be 0.01mm

6. Secondary processing: CNC machining, lapping, grinding, drilling, threaded,precision cutting and so on

7. Surface treatment: external and internal surface to be lappend, polished, glazed or metallized

The main characteristics of Alumina Ceramic tube

1. High temperature resistance, it can withstand up to 1750℃ in the air condition, but up to 2200℃ in vacuum atmosphere

2. Outstanding wear resistance, over 276 times in comparison with stainless steel

3. Exceptional corrosion resistance, it can withstand various strong acid and alkali, like HF, H2SO4

4. Extraordinary electrical insulation, it always use in many high voltage, high-current application

5. Great mechanical properties, hardness, compressive and flexural strength are much higher stainless steel

The gallery of the alumina ceramic tube

Threaded alumina ceramic tube 99.5% alumina ceramic tube

Remark:

We are able to achieve a variety of special requirement of Ceramic Tubes, including different materials,

different designs, different geometries.

The technical datasheet of various different purity of alumina

Gerneral	Property	Units	99.5% al2o3	99.2% al2o3	95% al2o3
Mechanical	Density	g/cm3	≥3.90	≥3.85	≥3.65
	Water absorption	%	0	0	0
	Hardness	HV	1700	1700	1500
	Flexural strength	Mpa	≥379	≥338	≥320
	Compressive strength	Mpa	≥2240	≥2240	≥2000
	Fracture toughness	Mpam^1/2	4-5	4-5	3~4
Thermal	Max. service temperature (Non-loading)	℃	1700	1600	1500
	CTE (20-800℃)	1×10 -6 /℃	6.5~8.0	6.2~8.0	5.0~8.0
	Thermal shock	T(℃)	≥250	≥220	≥200
	Thermal conductivity	W/m.k	30	29	24
	Specific heat	1 x 10^3 J/(kg·K)	0.78	0.78	0.78
Electrical	Volume resistivity
	25℃	ohm.cm	＞1 x 10^14	＞1 x 10^14	＞1 x 10^14
	300℃		1 x 10^12	8 x 10^11	10 ^12 -10^13
	500℃		5 x 10^10	2 x 10^ 9	1 x 10^9
	Insulation strength	KV/mm	19	18	18
	Dielectric constant （1Mhz）	(E)	9.7	9.5	9.5

Our advantage and strength

FAQs (Frequently Asked Questions)

Q1: Is it available to produce customized products?
A: We always support custom-made ceramic tubes as per different dimensions, designs, surface treatment.

Q2. When can I get the price after sending the inquiry?
A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price,

please call us or tell us in your email so that we will proceed with your inquiry as a priority.

Q3. How to ensure quality in your factory?
A: The strict quality-control will be done in the production line, including IQC, IPQC, QA, OQC,

also both CKP, AQL are regularly used in the production.
Q4. Are you a factory or trading company?
A: We are a professional manufacturer. You are welcome to visit our factory and cooperate with us.

Q5.Can you produce other technical ceramic parts?

A: We also focus on producing Metalized Ceramics, Industrial Ceramic Plate, Ceramic Seals and Textile Ceramics.