Products

Porous Alumina Tube

Brand: Yunxing
Product origin: China
Delivery time: Depending on product size and quantity
Supply capacity: 5,000-10,000/month(Looking for distributors)

1. Porous alumina tubes are renowned for their excellent thermal stability, chemical resistance, and high porosity. 2. Accept customized sizes. 3. Large stock and fast delivery.

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Porous Alumina Tube

Advantages of Porous Alumina Tubes

1. Corrosion Resistance: Porous alumina tubes have excellent resistance to a wide range of chemicals.

2. Oxidation Resistance: They exhibit good oxidation resistance at high temperatures. In applications such as high-temperature furnaces or in contact with oxidizing gases, the tubes can maintain their structural integrity and performance, preventing the formation of oxides that could affect their functionality.

3. Stable Structure: Alumina has a high melting point, and porous alumina tubes can retain their shape and structural stability at elevated temperatures.

4. Thermal Insulation: The porous structure of these tubes provides good thermal insulation properties.

5. High Strength: Despite being porous, alumina tubes can have relatively high mechanical strength.

6. Wear Resistance: The hardness and wear resistance of porous alumina tubes are relatively high.

7. Controllable Pore Size: The pore size of porous alumina tubes can be precisely controlled during the manufacturing process.

8. Electrical Applications: Porous alumina tubes have excellent electrical insulation properties. They can be used in electrical and electronic devices to isolate electrical components, prevent electrical leakage, and ensure the safe and stable operation of the equipment.

9. Low Pollution: Alumina is a relatively environmentally friendly material, and porous alumina tubes do not release harmful substances into the environment during use.

Applications of Porous Alumina Tubes

1. Porous alumina tubes are used as furnace working tubes, kiln components, and thermocouple protection tubes to protect sensitive components at high temperatures.

2. Porous alumina tubes are used as high-temperature and high-voltage insulators.

3. Porous alumina tubes are also used as heater support elements in thermal systems and measurement components in extreme environments.

4. Porous alumina tubes play a crucial role in laser technology.

5. Porous alumina tubes provide basic durability, reliability, and functionality in high stress and high temperature applications.

Size,Performance index

Insulation tube (extrusion) Specification Table:

Number	2 Bore tube SPEC: OD xID		LENGTH MM
Number	INCH	MM	LENGTH MM
1	0.031x0.005	0.79x0.13	≤18500
2	0.039x0.008	1x0.2
3	0.047x0.010	1.5x0.6
4	0.062x0.016	1.57x0.41
5	0.063x0.012	1.6x0.3
6	0.079x0.020	2x0.5
7	0.094x0.025	2.39x0.64
8	0.118x0.028	3x0.7
9	0.125x0.031	3.18x0.79
10	0.125x0.040	3.18x1.02
11	0.156x0.040	3.96x1.02
12	0.158x0.039	4x1
13	0.187x0.040	4.75x1.02
14	0.187x0.062	4.75x1.57
15	0.197x0.047	5x1.2
16	0.236x0.059	6x1.5
17	0.250x0.062	6.35x1.57
18	0.250x0.078	6.35x1.98
19	0.315x0.079	8x2
20	0.375x0.062	9.53x1.58
21	0.394x0.138	10x3.5
22	0.473x0.158	12x4

Insulation tube (extrusion) Specification Table:

Number	4 Bore tube SPEC: OD x ID		Length MM
Number	INCH	MM	Length MM
1	0.031x0.005	0.79x0.13	≤18500
2	0.039x0.010	1x0.25
3	0.047x0.010	1.19x0.25
4	0.059x0.016	1.5x0.4
5	0.063x0.016	1.59x0.41
6	0.063x0.014	1.6x0.35
7	0.094x0.020	2.39x0.51
8	0.100x0.020	2.5x0.5
9	0.118x0.020	3x0.5
10	0.125x0.020	3.18x0.51
11	0.156x0.031	3.96x0.79
12	0.158x0.032	4x0.8
13	0.187x0.031	4.75x0.79
14	0.187x0.047	4.75x1.19
15	0.197x0.047	5x1.2
16	0.218x0.050	5.54x1.27
17	0.236x0.059	6x1.5
18	0.250x0.062	6.35x1.57
19	0.313x0.062	7.95x1.57
20	0.315x0.097	8x2
21	0.394x0.079	10x2
22	0.473x0.138	12x3.5

Alumina ceramic performance index (Notice of Correct in Leakeage Rate）

NO.	Property	Unit	Alumina
1	Al2O3	%	>99.3
2	SiO2	%	—
3	Density	g/cm3	3.88
4	Water absorption	%	0.01
5	Compressive strength	MPa	2300
6	20℃ leakage rates	Torr・L/sec	>10-11=1.33322×10-12Pa・m3/sec
7	Twisting in high temperature	mm	0.2 allowed in 1600℃
8	Bonding in high temperature		not bonded in 1600℃
9	20—1000℃ coefficient of thermal expansion	mm.10-6／℃.m	8.2
10	Thermal conductivity	W/m.k	25
11	Electric insulation strength	KV/mm	20
12	20℃direct current insulation resistance	Ohm/cm	1014
13	High-temperature insulation resistance	1000℃ MΩ	≥0.08
13	High-temperature insulation resistance	1300℃ MΩ	≥0.02
14	Thermal shock resistance		4 times not cracked in 1550℃
15	Maximum working temperature	℃	1800
16	Hardness	Mohs	9
17	Flexural strength	Mpa	350

Factory equipment

Slip casting moulding: Inject the prepared slurry into the gypsum mold and let it stand for a period of time to allow the gypsum mold to absorb moisture. The slurry forms a uniform body on the inner wall of the mold.
Injection moulding: Inject a slurry containing paraffin into a metal mold at a certain temperature and pressure, and after the body cools and solidifies, perform demolding to prepare ceramic bodies.
Extrusion moulding: Suitable for long tube products, the powder is extruded into shape through an extruder.

FAQ

1.Are you a manufacturer or trading company?

We are a professional manufacturer for technical ceramics, we provide custom production at competitive price.

2.How can I get a quotation quickly?

A:Please offer the specification of ceramic tube, such as shape, dimension, quantity, application etc.

3.Could you make porous alumina tubes according to my drawings?

Yes. our accept porous alumina tubes are customized, we have rich experience in tailor-made . We have capability to control the parts in required size accuracy and surface finish

4.I don't know which ceramic material is suitable for my applications, could you give some advice?

Sure, we will give you our advice according to your using condition and help you choose the most suitable material.