Low Porosity 99.7% Polished Al2O3 Alumina Ceramic Thermocouple Tube

• Application: Chemical Processing, Electrical Insulation, High-Temperature Furnaces, Medical Devices, Semiconductor Industry
• Ceramic Tube & Rod: Ceramic Tube
• Length: Customized
• Working Temperature: 1700 Degree
• Density: 3.8GM/Cc
• Feature: Heat Resistance
• Flexural Strength: 280-350 MPa
• Thermal Conductivity: 25-30 W/Mk
• Certificate: RoHS
• Material: Alumina Ceramic
• Purity: 95%-99%
• Type: Ceramic Parts
• Transport Package: Carton Packing
• Specification: Customized
• Trademark: INNOVACERA
• Origin: Fujian, China
• Production Capacity: 100000 Piece/Pieces Per Month

Product Description

 

Product Description

Alumina ceramic is the most mature of engineering ceramics, offering excellent electrical insulation Good insulator/alumina tube furnace for metallurgical melting/innovacera ion properties together with high hardness and good wear resistance but relatively low strength and fracture toughness. Alumina has a high melting point, and 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. Good chemical stability of alumina leads to high corrosion resistance. 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 ceramic 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.

2. Alumina ceramics features:
1). Excellent electrical insulation
2). High hardness
3). Relatively low strength and fracture toughness
4). Resistance to wear and corrosive
5). Excellent thermal stability
6). Resistance to high temperatures
7). High electrical resistivity
8). Good chemical stability and resistance
9). High corrosion resistance
10). Excellent thermal shock resistance
11). High thermal insulation
12). A Low Young's modulus

 

Product Parameters

 

Alumina Ceramics Properties
	Unit	95%	99%
Density	g/cm3	3.6	3.8
Water absorption	%	<0.4	<0.2
Firing temperature	°C	1600	1800
Hardness	HRA	70	80
Coefficientoflinearexpansion	*10-6/°C	5.5	5.3
Dielectric constant		9	10.5
Volume resistivity	Ω·cm	-	1013
Breakdownvoltage	KV/mm	14	15
Breaking strength	Mpa	250	300

 

Detailed Photos