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Customized 99% Alumina machined structural parts High hardness, wear resistance

  • 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:
  • 01071

  • HaoRui

  • custom01001

 Alumina Ceramic Custom Finishing


Alumina ceramic structural parts


99% Alumina ceramic structural parts have high hardness, wear resistance, low corrosion, high temperature resistance, corrosion resistance and biological inertness. Alumina ceramics are being used more and more widely in modern society because of their superior properties for daily use and special properties.

★Good electrical insulation properties at room and high temperatures
★Small loss of mechanical strength at high temperatures and strong resistance to chemical corrosion (such as acids and alkalis).
★Ultra-high hardness and abrasion resistance, as well as compressive strength and other characteristics, widely used in electronic and electrical industries.

Category: Alumina Ceramic Parts

Tags: industrial applications


Applications of Alumina Ceramics
Alumina ceramics are the most common advanced ceramic material and more traditional. High purity alumina ceramics have been widely used in many industries as an excellent ceramic material. The material has excellent properties in terms of electrical insulation, high thermal conductivity, high chemical resistance, good wear resistance and low thermal expansion. Therefore, alumina ceramic products are ideal for many industries such as:

Shafts and plungers in high wear environments
Roller and ball bearings
Wear-resistant linings
Semiconductor parts
Machine components
High-temperature electrical insulators
High voltage insulators
Wires and conductors
Mechanical seals

Properties of Alumina material (Al2O3)


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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