- Glass tube
- alumina ceramic
- Alumina Tube
- Alumina plate
- Alumina crucibles
- alumina milling jar
- Alumina Washer
- alumina plug
- steatite ceramic
- alumina fateners
- alumina sheaths
- Zirconia ceramic
- Metalization-Ceramic
- silicon carbide heater
- Si3N4&SiC
- Ceramic fiber board
- fused silica tubes
- Mosi2 heating elements
- steatite ceramic
- Metallic heating elements
- zirconia ceramic screws
- Ceramic washers
- Tube furnace
- Graphite crucibles
- dental furnace for sintering
- Thermocouple
- Grinding jar
- Boron nitride disk/disc
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INTRODUCTION:
95% or 99%AL2O3 Alumina Ceramic Tube For furnace
Alumina Ceramic Part Introduction:
Ceramic parts provides excellent high temperature resistance, size stability, electric insulation, thermal shock resistance, extremely corrosion and wear resistance.
Alumina Ceramic Part Application:
- Furnace process tubes
- Steel tube liners
- Coal handling wear resistance pads
- Thermocouple protection tubes
- Sandblasting nozzles
- Wire drawing dies
- Bushings and caps
- Crucibles
- Tool bits
- Saggers
- Kiln furniture
- Mechanical seals
- Fuel cell parts
- Rollers for hearth furnaces
- Welding nozzles
- Laser parts
- Gas igniters
- Electric insulator
- Ceramic guiders
- Ceramic screwdrivers
- Zirconia oxygen Sensors
- Medical and surgical components
Alumina Ceramic Part Technical Date:
Alumina ceramic is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, stable electrical performance characteristics. Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products. We can make the part by hot injection pressing, dry pressing, isostatic pressing and extrusion productive technology etc |
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Item |
Unit |
95 Al2O3 |
96 Al2O3 |
99 Al2O3 |
|
Physical Characteristics |
Heat resistance |
0C |
1500 |
1550 |
1800 |
Bulk density |
g/cm3 |
3.6 |
3.6 |
3.9 |
|
Water absorption |
% |
0 |
0 |
0 |
|
|
Flexural strength |
Mpa |
320 |
340 |
360 |
Hardness vickers |
Gpa |
12.2 |
13.5 |
15.6 |
|
Elastic modulus |
Gpa |
280 |
320 |
370 |
|
Poisson’s ratio |
0.22 |
0.23 |
0.23 |
||
Thermal Characteristics |
Linear expansion coefficient |
(20-5000C) 10-6/0C |
7.1 |
7.2 |
8 |
Thermal conductivity |
w/(m.k) |
16 |
24 |
32 |
|
Specific Heat |
*10-3J/(kg*K) |
0.78 |
0.78 |
0.9 |
|
Electrical Characteristics |
Dielectric constant (1MHZ) |
- |
9 |
9.4 |
9.9 |
Dielectric loss angle |
*10-4 |
15 |
5 |
1 |
|
Dielectric strength |
*106V/m |
12 |
15 |
15 |
Specifications:
Ceramic product performance parameter list |
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Item | Test Condition | Unit Symbol | 95% Al2O3 | 99% Al2O3 | ZrO2 | Si3N4 |
Bulk Density | g/cm3 | ≥3.6 | ≥3.7 | ≥5.8 | ≥3.2 | |
Acid Resistance | 1:9HCl | mg/cm2 | ≤7 | ≤0.7 | ||
Alkali Resistance | 10% NaOH | mg/cm2 | ≤0.2 | ≤0.1 | ||
Tensile Strength | 25°C | Mpa | ≥160 | ≥190 | ≥320 | |
Flexural Strength | 25°C | Mpa | ≥280 | ≥300 | ≥1000 | ≥700 |
Thermal Shock Resistance | The sample in 800±10°C heating furnace heat preservation 30 minutes, removed in a asbestos board, naturally cooled to room temperature, repeat 10 times, no crack and burst phenomenon. | |||||
Coefficient of Linear Expansion | 20-500°C | 1X 10-6/°C | 6.5-7.5 | 6.5-7.5 | 9.5-10.5 | 3.1-3.3 |
20-800°C | 1X 10-6/°C | 6.5-8.5 | 6.5-8.5 | 9.5-10.5 | 3.1-3.3 | |
Young's Modulus of Elasticity | Gpa | ≥280 | ≥280 | ≥210 | ≥300 | |
Dielectric Loss | 1MHz 20°C | 1X 10-4 | ≤4 | ≤2.5 | ||
Dielectric Constan | 1MHz 20°C | 9-10 | 9-10.5 | |||
Volume Resistivity | 100°C | Ωcm | ≥1013 | ≥1013 | ||
300°C | Ωcm | ≥1010 | ≥1010 | ≥1010 | ≥1018 | |
500°C | Ωcm | ≥108 | ≥109 | |||
Dc Breakdown Strength | D.C. | Kv/mm | ≥18 | ≥15 | ||
Vickers Hardness | Mpa | 1600 | 1650 | 1200 | 1600 | |
Fracture Toughness | MPam½ |
3.8 |
4.2 | 10 | 7 | |
Poisson's Ratio | 0.22 | 0.25 | 0.3 |
0.25 |