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alumina ceramic core high purity alumina insulation core ceramic parts, multi-hole corundum

  • 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.
Availability:
Quantity:
  • 01095

  • HaoRui

  • custom01001

Alumina Al2O3 Ceramic Tube Insulator



Application
It mainly separates the different poles of the temperature measuring element to avoid pole interference or contact short circuit, so that the temperature measuring is accurate.  


Advantages

-Excellent insulation, security, long working life.

-High temperature resistance

-Resistance to electric breakdown

-Stand wear and tear

-High strength

Customised Production:Customised production involves tailoring the manufacturing process to meet specific customer requirements. In the context of aluminium oxide ceramic blind tubes, this may include customising the dimensions, shapes, surface finishes, and other specifications to suit the intended application.

 

SHENZHEN HAORUI can offer not only qualified products, we can also supplying quality service including design, development, export and after sales. With our professional skills, advanced technology and quality material, we can design and develop new products or new applications according to the clients' expectation.  We have custom-made new products and promoted the specifications for more than 1000 clients, and we have gotten good reputation from our clients.


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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