99 Alumina Ceramic Plungermerits
- Chemical processing equipment: Resistant to acid and alkali corrosion; suitable for the transfer of corrosive liquids
- Semiconductor Industry: Suitable for high-cleanliness, high-stability environments
- Oil, Pump, and Valve Industry: Stable Operation Even Under Long-Term High-Pressure Conditions
- Precision Metering Equipment: Ensuring Accuracy and Stability in Liquid Transfer
- High wear resistance: Resistant to wear even with long-term use, ensuring a longer service life
- High corrosion resistance: Resistant to a wide range of acidic and alkaline media
- High hardness: High strength and resistant to deformation
- Excellent high-temperature resistance: Suitable for complex operating conditions
- High surface finish: More consistent sealing performance
- Reliable operation: Reduces maintenance frequency and lowers operating costs
Description

Advantages of 99% Alumina Ceramic Plungers
Alumina ceramic plungers offer advantages such as high hardness, high wear resistance, and corrosion resistance, maintaining stable performance even under long-term, high-frequency operating conditions. Compared to metal plungers, they are less prone to rust and wear, have a longer service life, and can effectively reduce maintenance costs. Additionally, alumina ceramics offer excellent high-temperature resistance and dimensional stability, making them suitable for high-precision applications in the chemical, medical, pump and valve, and semiconductor industries. Thanks to their superior comprehensive performance, alumina ceramic plungers have become essential core components in modern industrial equipment.
- Reliable operation reduces operating costs
- High wear resistance for a longer service life
- High hardness and resistance to deformation
- High temperature resistance
- High surface finish
- High corrosion resistance
Aluminum oxide ceramics applications
Alumina ceramics are the most common advanced ceramic material and more traditional. As an excellent ceramic material, high purity alumina ceramics have been widely used in many industries. The material has excellent properties in terms of electrical insulation, high thermal conductivity, high chemical resistance, good wear resistance and low thermal expansion. Therefore, alumina ceramic products are ideal for many industries such as:
- Shafts and plungers in high wear environments
- Roller and ball bearings
- Wear-resistant lining
- semiconductor part
- Machine components
- High temperature electrical insulators
- High-voltage insulators
- Wires and conductors
- mechanical seal
Basic Properties of Alumina Ceramics
Alumina is an excellent high temperature ceramic material due to its high temperature stability. It is one of the most commonly used high grade ceramics. Zhihao Ceramics offers alumina ceramics with purity ranging from 95% to 99.5%.
- Excellent electrical insulation (1×1014to 1×1015 (Ω cm);
- Medium to ultra-high mechanical strength (300 to 630 MPa);
- Very high compressive strength (2000 to 4000 MPa);
- High stiffness (15 to 19 GPA);
- Medium thermal conductivity (20 to 30 W / MK);
- Low density (3.75 to 3.95 g/cm)3);
- Operating temperature 1650°C without mechanical load;
- Biologically inert, food compatible.
Comparison Table of Alumina Ceramics and Other Common Industrial Ceramics
| comparison dimension | Aluminum oxide ceramics (Al₂O₃) | Zirconia ceramics (ZrO₂) | Silicon Carbide Ceramics (SiC) | Silicon Nitride Ceramics (Si₃N₄) |
|---|---|---|---|---|
| Core features | Well-rounded overall performance and low cost | High toughness, high impact resistance | Extremely high hardness and excellent heat resistance | High strength, excellent thermal shock resistance |
| durometer | your (honorific) | Above average | extremely high | your (honorific) |
| Toughness (resistance to fracture) | moderate | Very high (strength) | lower (one's head) | your (honorific) |
| abrasion resistance | your (honorific) | moderate | extremely high | your (honorific) |
| High temperature resistance | Stable at around 1600°C | Moderate (slightly below average) | Very high (Excellent) | Very high (Excellent) |
| Thermal shock resistance | general | general | moderate | Very strong (advantage) |
| electrical insulation | talented | talented | Semiconductor properties (poor) | favorable |
| corrosion resistance | favorable | talented | Extremely strong | favorable |
| processing difficulty | moderate | high | Very high | Very high |
| (manufacturing, production etc) costs | Lower (advantage) | high | your (honorific) | your (honorific) |
| typical application | Structural components, insulating components, wear-resistant components | Medical, Bearings, Valve Spools | High-temperature components, seals | Engine components, bearings, hot-end structures |
Suppliers of Aluminum oxide ceramics
To Good Ceramics is a professional ceramic supplier, we have many years of experience in producing high quality precision ceramic parts. We utilize our experienced team and in-depth knowledge of ceramic materials to create the best precision ceramic products for our customers at competitive prices.





