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Wear-resistance 95% Alumina Ceramic Tube High Hardness And Wear Resistance Ceramic Bush

  • Very good electrical insulation.
  • Moderate to extremely high mechanical strength.
  • Very high compressive strength.
  • High hardness.
  • Moderate thermal conductivity.
  • High corrosion and wear resistance.
  • Good gliding properties.
  • Low density.
  • Operating temperature without mechanical load 1,000 to 1,700°C.
  • Bioinert and food compatible.
Availability:
Quantity:
  • 01024

  • HaoRui

  • custom01024

Overview

Alumina or aluminum oxide (Al2O3) is a major engineering material. It offers a combination of good mechanical properties and electrical properties. It is used more often than any other advanced ceramic material.

Alumina ceramics are commonly subdivided according to their alumina content ranging from 80% to more than 99%. Alumina can be produced in a range of purities with additives designed to enhance properties. Higher purity alumina demonstrates enhanced wear and corrosion resistance.

A wide variety of ceramic processing methods can be applied including machining or net shape forming to produce a wide variety of sizes and shapes of component. In addition, it can be readily joined to metals or other ceramics using metallising and brazing techniques.

Alumina based ceramics are by far the largest range of advanced ceramics made by HaoRui. Due to the important combination of properties, we have thoroughly researched the behaviour and characteristics of our alumina products to give you the best possible component.

Product Description

Alumina was quickly adopted by the electronics industry due to its high electrical insulation properties. In addition, because it has excellent corrosion resistance, wear resistance, and mechanical strength, it is used in many industrial machinery parts, and is the most widely used Fine ceramic material.

900X900-F2  900X900-F5 900X900-F4



Our Services

SHENZHEN HAORUI can offer not only qualified products, we can also supplying quality service including design, development, export and after sales. Our team is happy to provide guidance, answer any questions you may have, provide technical support or respond to your feedback about our service.


Company Information

Shenzhen Haorui Industrial Technology Co., Ltd. was established in June 2006. It is an enterprise specializing in R&D, manufacturing, and sales of engineering ceramics. After Twenty years of development, we have accumulated rich industry experience and trained a group of professional technicians. We have a complete production process and quality management system, as well as a complete set of precision processing equipment and testing equipment. Our dedication to innovation and excellence drives us to continuously improve our products and services to meet the evolving needs of our customers.

IMG20240627110203_副本
Properties of Alumina

The Most Well-known Oxide Ceramic Material





Properties of Alumina/Aluminum Oxide (Al2O3)


  • Very good electrical insulation.

  • Moderate to extremely high mechanical strength.

  • Very high compressive strength.

  • High hardness.

  • Moderate thermal conductivity.

  • High corrosion and wear resistance.

  • Good gliding properties.

  • Low density.

  • Operating temperature without mechanical load 1,000 to 1,700°C.

  • Bioinert and food compatible.


Property
Item
95% Al2O3
99% Al2O3
99.8%Al2O3
Unit
Mechanical Characteristics
Color
White
light yellow
Ivory

Bulk Density
3.7
3.85
3.93
g/cm3
Water Absorption
0
0
0
%
Bending Strength
300
310
370
MPa
Compressive Trength
2,300
2,400
2500
MPa
Elastic Modulus
320
340
390
GPa
Fracture Toughness
3~4
3~4
4
MPa m1/2
Weber Coefficient
12
12
12
m
Vickers Hardness
1,400
1,600
1850
HV 0.5
Thermal Characterics
Coefficient of Line Thermal
Expansion
7~8
7~8
7~8
10-6 K-1
Thermal Conductivity
20
29
32
W/mK
Thermal Shock Resistance
(Put in Water)
250
200
280
ΔT °C
Max Working Temperature
1,500
1,600
1700
°C
Electrical Characteristics
Volume Resistance At 20°C
>1014
>1014
>1014
Ωcm
Dielectric Strength
15×106
15×106
15×106
V/m
Dielectric Constant
9
10
10
εr
One MHZ Dielectric Loss Angle
at 20°C
0.0004
0.0002
0.0001
tanδ
Chemical Characteristics
Nitric Acid (60%) 90°C
0.1
0.1
0.05
24H WT Loss mg/cm2
Sulphuric Acid (95%) 95°C
0.3
0.34
0.22
Caustic Soda (30%) 80°C
0.9
0.95
0.04


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Founded in June 2006, Shenzhen Haorui IndustriaI Technology Co.,Ltd. is a professional enterprise engaged in R&D, manufacturing and sales of non-standard industrial ceramics, hard alloys (tungsten steel) and various metal and non-metal precision machinery parts.

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