High Temperature Alumina Ceramic Square Tube for Electric Heating Products

• Customization: Available
• Application: Refractory, Structure Ceramic, Industrial Ceramic
• Color: White, Ivory, Yellow, Pink, Cream
• Model NO.: ALT007
• Density: Over 3.7g/cm3
• Shape: Square, Tubular, Oval, Rectangular, Half
• Usage: Thermocouples, Furnace, Temperature Measurement
• Certification: RoHS/Reach/Tsca
• Feature: Wear Resistance and Insulation
• Material: Alumina Ceramic
• Type: Ceramic Tubes
• Transport Package: Carton/Wooden Box
• Specification: customized
• Trademark: None
• Origin: China
• HS Code: 8547100000
• Package Size: 20.00cm * 18.00cm * 15.00cm
• Package Gross Weight: 1.000kg

Product Description

Product Description

Introduction:
Product name:  Alumina Ceramic Square Tube for Electric Heating Products
Color: white/Ivory

Ceramic alumina tube and insulator are used in thermocouple assembly which applied for high temperature messuring.
Al2O3 content determines the measuring temperature level, Al2O3 content higher, the temperature is higher.
Alumina Tubes is the the workhorse of the advanced technical ceramic tubes. It has good mechanical and electrical properties, wear resistance and corrosion resistance. It has relatively poor thermal shock resistance.

 

Features:

-Hard, wear-resistant

-Excellent dielectric properties from DC to GHz frequencies
-Resists strong acid and alkali attack at elevated temperatures
-Excellent size and shape capability
-High strength and stiffness
-High thermal shock resistance

 

Application:
Mainly used in thermocouple temperature sensor, continuous temperature sensor of molten steel, various industrial furnaces (including vacuum furnace, carburizing furnace, wire winding furnace, atmosphere furnace, etc.). It is widely used in petrochemical, textile, electronics, instrumentation, machining, military and other industries. Among them, the protection tube for thermocouple temperature sensor is mainly used to protect the temperature sensor element, isolate the temperature sensor element from the outside, and reduce or prevent the element from being corroded, oxidized or damaged by external substances during use. In use, the temperature sensor element with good insulation protection is set in the protective tube, and then the open end and the coupling head are glued and sealed together with high temperature cement. When measuring temperature, insert the sealed end into the temperature sensor area, and avoid rapid cold and rapid heat when using, so as to avoid excessive damage to the protection tube.

 

Size Specification
Square	One End Close	Open Both Ends
15*15*2.5mm	OD16mm	OD16mm
16*12*2.5mm	OD20mm	OD20mm
16*16*2.5mm	OD25mm	OD25mm
≤3000mm	≤3000mm	≤3000mm

 

Product Parameters

Material Comparison Chart

Material		Alumina				Zirconia	Recrystallization Silicon carbide	Silicon Nitride bonded Silicon Carbide
Properties	Units	AL997	AL995	AL99	AL95	Zro2	RSiC	NSiC
%Alumina	--	99.70%	99.50%	99.00%	95%	--	--	--
Color	--	lvory	lvory	lvory	lvory&White	lvory White	black	gray
Permeability	--	Gas-tight	Gas-tight	Gas-tight	Gas-tight	Gas-tight	--	--
Density	g/cm³	3.94	3.9	3.8	3.75	5.89	2.7	2.8
Straightness	--	1‰	1‰	1‰	1‰	1‰	1‰	1‰
Hardness	Mohs Scale	9	9	9	8.8	8.5	9.5	9
Water Absorption	--	≤0.2	≤0.2	≤0.2	≤0.2	0	0	0
Flexural Strength (Typical 20ºC)	Mpa	375	370	340	304	1200	90	180
Compressive Strength (Typical 20ºC)	Mpa	2300	2300	2210	1910	5700	600	650
Coefficient of Thermal Expansion (25ºC to 800ºC)	10^-6/ºC	7.6	7.6	7.6	7.6	10	4.7	5
Dielectric Strength (5mm Thickness)	AC-kv/mm	10	10	10	10	--	--	--
Dielectric Loss 25ºC@1MHz	--	<0.0001	<0.0001	0.0006	0.0004	0.001	--	--
Dielectric Constant	25ºC@1MHz	9.8	9.7	9.5	9.2	29	--	--
Volume Resistivity (20ºC) (300ºC)	Ω·cm³	>10^14 2*10^12	>10^14 2*10^12	>10^14 4*10^11	>10^14 2*10^11	>10^13 5*10^8	--	--
Long-term operating temperature	ºC	1700	1650	1600	1400	2200	1650	1450
Thermal Conductivity (25ºC)	W/m·K	35	35	34	20	3	23	15

Production Flow

Certifications

 

Company Profile

Jiangsu Fist Special Ceramic Co., Ltd is located in Jiangsu Province, established in 2016. The transportation is very convenient for express, airport and any port in Yangtze River Delta. We near Shanghai, only two hours drive.

Superior geographical location and mature industrial chain of ceramic, we are a manufacturer specialized in developing, producing and selling ceramic materials and products which meet the market demand. We can provide professional OEM & ODM service. Our main products are alumina ceramic, zirconia ceramic, steatite ceramic, cordierite ceramic, mullite ceramic, electronic ceramic, industrial ceramic, daily ceramics, etc. With good quality, reasonable prices and stylish designs, our products are extensively used in machinery, textiles, electronics, automotive, plumbing, seal, humidification, new light source, household appliances, electric heating, solar power and other industries. Good quality and experience service win many customers including domestic and foreign. We warmly welcome new and old customers from all walks of life in the whole world to contact us for future business relationships to achieve mutual success!

Contact Us

FAQ

Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock or customeriziation, it is according to quantity.
Q: How about the payment terms?
A: T/T or L/C are okay. We can negotiate.
Q: How can you get quotation?
A: Please kindly send me your drawing with technical requirement and demand quantity.
If you don't have the drawing,please kindly courier samples to us.We will quote our best price as soon as possible.

Q: How about the shipping&package?

A: The package usually includes bubble wrap, carton, pallent, wooden case, etc. The shipping mode includes express, air and sea transportation. Both we can negotiate and choose the best way.