Industrial High Purity Alumina Ceramic Tip TIG Welding Nozzles
The main characteristics of the alumina ceramic parts
1. High hardness: Hardness up to 1700 HV, and compressive strength up to 2240 Mpa.
2. Provides different levels of dimensional accuracy through sintering and precision machining.
3. They offer equal performance and are more cost-effective than other technical ceramics.
4. High heat resistance: Alumina ceramic parts have excellent thermal stability, which means it can be used in areas that require high temperature resistance.
5. Good wear resistance: Ideal for wear parts in highly abrasive industries.
6. High electrical resistivity: Used in electronic products, electric heating products and wear-resistant mechanical parts.
7. High corrosion resistance: Insoluble in water, only slightly soluble in strong acid and alkali solutions. Aluminum oxide's good chemical stability results in high corrosion resistance.
8. Support customization: Various alumina ceramic parts can be customized according to customer's drawings, samples or reference parameters.
The description of alumina ceramic parts
Alumina ceramic is one of the structural ceramics, which has the characteristics of high insulation, high voltage resistance, high strength, good thermal conductivity, dielectric loss, corrosion resistance, etc. Since alumina has the highest cost performance among all technical ceramics, alumina ceramic parts are often used in electronic ceramic substrates, high voltage/current electrical insulation, vacuum devices, spark plugs and other products.
The purity of the alumina produced in our factory ranges from 75% to 99.8%, and all ceramic parts we offer are produced as dense bodies by dry pressing, hot pressing, ceramic injection molding or ISO pressing.
In order to achieve some special assemblies, friction-reducing applications, and insulation-increasing applications, we provide a series of secondary processing after sintering, including CNC machining, polishing, glazing and metallization.
In addition, we produce various types of alumina ceramic tubes, ceramic rings, ceramic disks, ceramic rods, ceramic arms, and ceramic wire guides. Whether it's a prototyping case or a high-volume requirement, we're confident we can provide you with the ideal solution.
The application of alumina ceramic parts
Alumina ceramic parts are widely used in almost all modern industries such as electronic, electrical, machinery, chemistry, mineral, new energy, military and aerospace.
Datasheet of technical ceramic materials
| Property |
Units |
Materials |
| 99.5% Al2O3 |
99% Al2O3 |
95% Al2O3 |
ZrO2 |
Si3N4 |
| Density |
g/cm3 |
≥3.85 |
≥3.80 |
≥3.60 |
≥6.0 |
≥3.2 |
| Water absorption |
% |
0 |
0 |
0 |
0 |
0 |
| Hardness |
HV |
1700 |
1700 |
1500 |
1300 |
1550 |
| Flexural strength |
Mpa |
≥379 |
≥338 |
≥320 |
≥1200 |
≥600 |
| Compressive strength |
Mpa |
≥2240 |
≥2240 |
≥2000 |
≥1990 |
≥2500 |
| Fracture toughness |
Mpa m1/2 |
4-5 |
4-5 |
3-4 |
6.5-8 |
6 |
Max. service temperature
(Non-loading) |
ºC |
1675 |
1600 |
1500 |
1000 |
1200 |
| CTE (20-800ºC) |
1×10 -6 /ºC |
6.5~8.0 |
6.2~8.0 |
5.0~8.0 |
8.0~9.5 |
3.1 |
| Thermal shock |
T(ºC) |
≥250 |
≥200 |
≥220 |
≥300 |
≤1000 |
| Thermal conductivity(25ºC) |
W/m.k |
30 |
29 |
24 |
3 |
15~20 |
| Volume resistivity (25ºC ) |
ohm.cm |
>1 x 10 14 |
>1 x 10 14 |
>1 x 10 14 |
>1 x 10 11 |
>1 x 10 12 |
| Insulation strength |
KV/mm |
19 |
18 |
18 |
17 |
|
| Dielectric constant(1Mhz) |
(E) |
9.7 |
9.5 |
9.5 |
29 |
|
FAQs (Frequently Asked Questions)
Q1. Are you a factory or trading company?
A: We are a direct manufacturer with veteran and skillful production lines.
Q2: Do you send a sample to check?
A: For sure, the sample with the standard design is free, but freight collected.
Q3: When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price.
Please call us or tell us in your email so that we will proceed with your inquiry as a priority.
Q4: Is it available to provide customized products?
A: We always support custom-made demand as per different materials, dimensions, and designs.
Q5: How do you ensure quality before shipping?
A: The sampling inspection will be done each batch per AQL standard. A 100% cosmetic inspection will be done.
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