Active Member
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[China]
Address: NO 21st ChuangXing Road, Shangsha community , Changan Town, Dongguan city Guangdong province, China
Contact name:Admin deng
Dongguan Ming Rui Ceramic Technology Co.,ltd |
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High Temperature Insulation 99% Alumina Ceramic Wafer / Substrate/ Round Sheet / Disk
Technical data of al2o3 alumina ceramic wafer:
-Heat resistance
-Wear resistance
-High strengh
-Good insulation
-Corrosion resistance
-Used in all electric products, electric heating products and wear
resistant machinery parts.
-OEM, ODM and OBM are welcomed
Application:
Alumina ceramic is mainly used in large power equipment, IC MOS
tube, IGBT chip heat conducting insulation, high frequency power
supply, communication, mechanical equipment, strong current, high
voltage, high temperature and other thermal heat insulation parts
need products.
Physical properties: high thermal conductivity, high voltage
insulation resistance, high temperature resistant, abrasion
resistant, high strength.
Different technique datas of different alumina percentage:
| Item | 99alumina | 95alumina | 92alumina | unit symbol |
| Bulk Density | 3.85 | 3.65 | 3.6 | g/cm3≥ |
| Flexural Strength | 350 | 300 | 280 | MPa≥ |
| Max Use Temperature | 1700 | 1500 | 1400 | °C≥ |
| Volume Resistivity | 1015 | 1014 | 1014 | Ω·cm 20°C |
Our products include engineered ceramic, strengthened structure ceramic,ceramic bar,ceramic tube,ceramic block, ceramic ring, ceramic cylinder/bushings, ceramic shaft,ceramic plate,ceramic sleeve,ceramic valve,ceramic plunger and ceramic arm,ceramic pin, ceramic metric gauge, ceramic substrate.
Machining precision data: (reference data,the actual data is subject to the actual
conditions)
(1)Shaft parts: Radial dimensions can reach 0.0015 mm; roundness
0.001 mm, concentricity 0.0025 mm, roughness 0.01
(2)Hole type parts:Machining minimum aperture of 0.3 mm, depth can
reach 3 mm;The diameter of 1 mm can be radial 0.002 mm;Roughness
0.02-0.04;
(3)Plane processing:The tolerance can reach 0.002 mm, and the plane
is 0.0015mm.
(4)Ceramic thread processing:the internal thread M2 can be grinds,
thread precision GB-7h; The outer thread size is not limited, the
precision GB-6g;
Properties Sheet of zirconia and alumina :
| Properties | Unit | Alumina | Zirconia | ||||
| 96%Al2O3 | 99%Al2O3 | 99.5%Al2O3 | 99.8%Al2O3 | 99.9%Al2O3 | 3Y-TZP | ||
| Colour | - | White | White | Ivory | Ivory | Translucent | white/black |
| Bulk density | g/cc | 3.78 | 3.88 | 3.93 | 3.93 | 3.98 | 6.03 |
| Water Absorption | % | 0 | 0 | 0 | 0 | 0 | 0 |
| Grain size | μm | 5-10 | 2-5 | 2-5 | 2-5 | 2-4 | 0.4 |
| Bending strength | MPa | 380 | 350 | 360 | 380 | 300 | 1000 |
| KIC | MPa.m1/2 | 3~4 | 4 | 3~4 | 3~4 | 3~4 | 5~8 |
| Vickers Hardness | GPa | 13 | 14 | 14.5 | 14.5 | 15 | 13 |
| Young's Modulus of Elasticity | GPa | 360 | 370 | 370 | 380 | 390 | 200 |
| Thermal Conductivity | W/m° K | 24 | 28 | 32 | 32 | 34 | 2 |
| Coefficient of Linear Expansion | 10-6/°C | 6.7 | 7.2 | 7.2 | 7.2 | 7.2 | 10.5 |
| Dielectric Constant (1MHz) | - | 9.1 | 9.5 | 9.6 | 9.6 | 9.9 | 33 |
| Dielectric Loss Angle (1MHz) | - | 0.0002 | 0.0001 | 0.0001 | 0.0001 | 0.0001 | 0.002 |
| Dielectric Strength | V/m | 15×106 | 15×106 | 15×106 | 15×106 | 15×106 | 11×106 |
| Volume Resistivity | Ohm.cm | >1014 | >1014 | >1014 | >1014 | >1014 | 1013 |
| (RT) | |||||||
Packaging & Delivery
| Packaging Details: | 1. Carton with Bubble bag or foam. 2. Wooden carton 3. As per customer's requirements. |
| Delivery Details: | 1. 3-25 days for sample 2. 25-40 days for mass products. |
| Shipment Terms: | 1. Small order: By express, DHL/ UPS/ Fedex/ EMS etc. 2. Large order: By sea or By air |
A: We are factory.
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30%
T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below:
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