-
Of course. This is an excellent and highly specialized topic. High-precision CNC machined alumina ceramic components are critical in industries where standard materials like metals or plastics fail.
Here is a comprehensive breakdown covering what they are, why they're used, how they're made, and their applications.
Executive Summary
High-precision CNC machined alumina ceramic components are parts made from aluminum oxide (Al₂O₃) that are shaped and finished using Computer Numerical Control (CNC) machining to achieve extremely tight tolerances, complex geometries, and superior surface finishes. Alumina is chosen for its exceptional hardness, wear resistance, electrical insulation, and thermal stability. CNC machining is necessary because alumina is too hard and brittle to be shaped by traditional methods after it's fired.
1. What is Alumina Ceramic?
Alumina (Aluminum Oxide, Al₂O₃) is a technical ceramic known for its excellent all-around properties. Its performance is often measured by its purity percentage
-
96% Alumina: The most common grade, offering a great balance of properties and cost-effectiveness. Excellent mechanical strength, hardness, and corrosion resistance.
-
99.5% Alumina: Higher purity translates to better properties: superior hardness, higher operating temperature, and enhanced chemical resistance. It is also more expensive.
- 99.8% Alumina / 99.9% Alumina: Used for the most demanding applications, such as semiconductor processing, where ultra-high purity, maximum wear resistance, and exceptional performance at high temperatures are required.
Technical Parameters
| Item |
Unit |
Zirconia ceramic |
99% alumina ceramic |
96% alumina ceramic |
95% alumina ceramic |
Steatite ceramic |
Mullite ceramic |
Cordierite ceramic |
| Bulk density |
g/cm3 |
6 |
3.8 |
3.7 |
3.6 |
2.8 |
2.2 |
2.3 |
| Water absorption |
% |
0 |
0 |
0 |
0 |
0 |
12 |
12 |
| Thermal Conductivity |
(w/m.k) |
10 |
19-30 |
16-28 |
14-24 |
2-3 |
2-6 |
1.3-1.8 |
| Resistance to thermal shock,Minimum |
TK? |
70 |
150 |
140 |
140 |
80 |
150 |
300 |
| Withstand voltage,Minimum |
KV |
15 |
20 |
18 |
18 |
20 |
25 |
- |
| Flexural strength |
Mpa |
1000 |
300 |
280 |
240 |
120 |
120 |
30 |
| Sintering temperature |
℃ |
1500 |
1670 |
1600 |
1600 |
1250 |
1250 |
1250 |
| Maximum working temperature |
℃ |
1200 |
1500 |
1200 |
1200 |
800 |
1000 |
1000 |
Application
Specifically used for high-temperature and high-voltage insulation parts, circuit substrates, high-temperature devices, etc. As the main representative of precision ceramic materials, it is widely used in industries such as semiconductors, petrochemicals, and electronics.
Advantages
1. we support OEM and ODM;
2. We have a professional R&D team and technical support;
3. We provide real-time logistics update information;
4. We support 24-hour online service;
5. We support T/T,L/c payment;
6. We have a professional QC team to check the quality before delivery.
Certificate
FAQ
1. How can you get quotation?
Please kindly send me your drawing with technic requirement and demand quantity.
If you don't have the drawing, please kindly courier samples to us. we will quote our best price in 24 hours.
2. How can you get samples?
We can supply free samples if we have them in stock. If we haven't produce the products, we can supply some free samples after getting tool fee. Please take note that the courier fee should be at destination.
3. What’s the lead-time for samples and batch orders?
It is 18days for supplying samples. It is around 25days for batch orders.
4. Can I visit you?
Sure. If you're a volume buyer and would like to visit our in-house products and production line, please contact us to make an appointment.
