Alumina Ceramic Gaskets Special Ceramic Structural Parts Customized Fixed Expansion Screw Gaskets
Alumina ceramic washers for securing expansion screws are an ideal choice, offering excellent wear resistance and high-temperature performance. These alumina washers effectively distribute pressure, enhancing the securing effect and making them particularly suitable for applications requiring high strength and stability. They maintain good performance even in high temperatures and extreme environments, ensuring long-term reliable fastening. Perfect for use in various industrial equipment and mechanical systems.
| Ceramic Properties Table |
| |
Name |
99ceramic |
95ceramic |
Zirconia |
| |
Main Ingredients |
Al2O3>99% |
Al2O3>95% |
ZrO2≥94% |
| Physical properties |
Density |
3.85 |
3.6 |
5.9 |
| Water Absorption％ |
0 |
0 |
0 |
| Sintering temperature°C |
1690 |
1670 |
1650 |
| Material properties |
Hardness HV |
1700 |
1600 |
1400 |
| Flexural strength 4pt |
>3500 |
＞2900 |
>11000 |
| Compressive strength Kgf/㎡ |
30000 |
25000 |
25000 |
| Thermal properties |
Maximum operating temperature°C |
1500 |
1400 |
1600 |
| Coefficient of thermal expansion |
8 |
7.8 |
10 |
| 10-6/°C |
| 0-1000°C |
| Electrical Characteristics |
Thermal shock resistance T(°C) |
200 |
220 |
350 |
| Thermal conductivity W/m.k |
31 |
22 |
3 |
| Volume resistivity Ω.cm |
>10¹² |
>10¹² |
>10¹² |
| Dielectric breakdown strength KT/m |
18 |
16 |
15 |
| Dielectric constant 1MHZ(E) |
9.2-10.5 |
9.0-10 |
12.5
|
Purchase process
FAQ
Q1: Are you a manufacturer or a trader?
A1: We are a real manufacturer, our factory is specialized in producing refractory materials for more than 20 years. We promise to provide the best price, the best pre-sale and after-sale service.
Q2: How do you control your quality?
A2: For each production process, LJ has a complete QC system for chemical composition and physical properties. And we will test the goods, and the quality certificate will be shipped with the goods. If you have special requirements, we will try our best to accommodate them.
Q3: What is your delivery time?
A3: Depending on the quantity, our delivery time is different. But we promise to ship as soon as possible with guaranteed quality.
Q4: Do you provide free samples?
A4: Of course, we provide free samples.
Q5: Can we visit your company?
A5: Yes, of course, you are welcome to visit LJ company and our products.
Q6: What is the MOQ for trial order?
A6: There is no limit, we can provide the best suggestion and solution according to your situation.
Q7: Why choose us?
A7: We have been making refractory materials for more than 20 years, we have strong technical support and rich experience, we can help customers design different kilns and provide one-stop service.
