High-Purity, Heat-Resistant Alumina Ceramic Tubes: Reliable Precision for Demanding Industrial Applications

Overview of Alumina Ceramic Tube

Alumina ceramic tube is a kind of ceramic tube with high purity alumina (Al₂O₃) as the main ingredient, which is usually made through the processes of powder preparation, molding, sintering and post-treatment. Its purity is generally between 95% and 99.8%, and it can operate stably in an environment of up to 1800℃.

Features of Alumina Ceramic Tube

High hardness and abrasion resistance: Alumina ceramic tubes have extremely high hardness, second only to diamond, and can effectively resist abrasion and scratches, and are suitable for high-friction environments, which can extend the service life of the equipment and reduce maintenance costs.

Excellent high-temperature resistance: stable operation in environments up to 1600°C, low coefficient of thermal expansion and good thermal shock resistance, suitable for high-temperature industrial equipment and furnace components.

Good electrical insulation properties: very low electrical conductivity and high dielectric strength, the manufacture of high-voltage insulating tubes and electronic substrates of the ideal material can provide a guarantee for the safe operation of electronic equipment.

Excellent chemical stability: acid and alkali corrosion resistance, even in harsh chemical environments, can maintain stable performance, especially for the chemical industry in the reaction vessel, piping and protection components.

Cost-effective: Compared with other precision ceramics, such as zirconia ceramics and silicon nitride ceramics, alumina ceramics ensure high performance at a more economical cost, making them an ideal material choice for customers in multiple fields.

Specifications table of Alumina Ceramic Tube

Parameter	Unit	95% Alumina	99% Alumina	99.7% Alumina
Alumina Content	%	95	99	99.7
Color	–	White	Ivory	Ivory
Density	g/cm³	3.70	3.90	3.92
Hardness (Vickers)	HV	13.8 GPa	17.2 GPa	18 GPa
Tensile Strength	Kpsi	32	38	36
Flexural Strength	Kpsi	52	55	54
Compressive Strength	Kpsi	300	377	350
Thermal Conductivity	W/(m·K)	25	30	30
Coefficient of Thermal Expansion	10⁻⁶/°C	7.7	7.8	7.8
Operating Temperature	°C	1500	1650	1750
Dielectric Constant	–	9.5	9.7	9.8
Volume Resistivity (25°C)	Ω·cm	>10¹⁴	>10¹⁴	>10¹⁴
Surface Roughness	Ra (µm)	<0.1	<0.1	<0.1
Surface Finish	–	Polished	Polished	Polished
Customization	–	Available	Available	Available
Common Sizes	–	1 mm to 50 mm diameter	1 mm to 50 mm diameter	1 mm to 50 mm diameter
Length	mm	10 mm to 1000 mm	10 mm to 1000 mm	10 mm to 1000 mm
Tolerance	mm	±0.01	±0.01	±0.01

Applications of Alumina Ceramic Tube

Electrical and electronic field: The electrical insulation properties of alumina ceramic tubes make them widely used in high-voltage insulating sleeves, electronic parts substrates, etc., preventing leakage of electricity and ensuring the safe operation of electronic equipment.

Chemical industry: used in the manufacture of the acid-resistant pump impeller, pump body, acid pipeline lining and valves, etc., which can resist chemical corrosion and ensure the stable operation of the equipment in a high-temperature corrosive environment.

High-temperature industry: in metallurgy, glass manufacturing, cement production and other high-temperature industrial furnaces and kilns, alumina ceramic tubes can be used as refractory coatings, refractory bricks, high-temperature seals and other high-temperature protective materials to protect the furnace body from high-temperature erosion effectively.

Medical field: The biocompatibility and chemical resistance of alumina ceramics allow them to be used in clinical implants, laboratory crucibles, and other applications that require high purity and robustness.

Mechanical manufacturing: It can be used to manufacture textile wear parts, knives, etc. Its high hardness and wear resistance make it a commonly used abrasive in the wood and metal product industries.

Company Profile

Alumina Technology Co., Ltd.! We focus on the research and development, production and sales of alumina products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2005, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Alumina Boat, Alumina Crucible, Alumina Dish, Alumina Foam Filter, Alumina Plate, Alumina Rod, Alumina Bar, Alumina Balls, Filter Alumina, Nano Alumina Powder, Spherical Alumina Powder, ect. please feel free to contact us.(nanotrun@yahoo.com)

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Alumina Ceramic Tube

Q1: Can alumina ceramic tubes withstand high-temperature environments?

Alumina ceramic tubes have excellent high-temperature resistance and can operate stably in environments up to 1600°C. They are suitable for high-temperature industrial equipment and furnace components.

Q2: What are the electrical insulation properties of alumina ceramic tubes?

Alumina ceramic tubes have extremely low electrical conductivity and high dielectric strength, making them ideal for manufacturing high-voltage insulating sleeves and electronic substrates and providing a guarantee for the safe operation of electronic equipment.

Q3: What is the wear resistance of alumina ceramic tubes?

The hardness of alumina ceramic tubes is extremely high, second only to diamond, with excellent wear resistance, which can effectively extend the service life of equipment and reduce maintenance costs.

Q4: Are alumina ceramic tubes suitable for chemical environments?

Yes, alumina ceramic tubes have excellent chemical stability and are resistant to acid and alkali corrosion, which makes them particularly suitable for reaction vessels, piping and protective components in the chemical industry.

Q5: How cost-effective are alumina ceramic tubes?

Compared to other precision ceramics, such as zirconia ceramics and silicon nitride ceramics, alumina ceramics ensure high performance at a more economical cost, making them an ideal material choice for customers in multiple fields.