Performance parameters of alumina ceramics

Alumina ceramics, as an advanced high-performance engineering ceramic, play a key role in many industrial fields due to their excellent comprehensive performance.

Analysis of Core Performance Parameters
The performance of alumina ceramics is closely related to their purity (alumina content), with common grades ranging from 85% to 99.9%. The following are its key performance parameters:

High hardness and wear resistance
Parameters: Rockwell hardness HRA 80-90, Mohs hardness can reach level 9 (second only to diamond and cubic boron nitride).
Interpretation: Its extremely high hardness enables it to resist scratching and wear from hard particles, maintaining dimensional stability and long-lasting service life in harsh friction environments.
Excellent mechanical strength
Parameters: flexural strength of 300-450 MPa, compressive strength of up to 2000-3000 MPa.
Interpretation: It can withstand enormous pressure and bending loads, maintain good mechanical properties even at high temperatures, and is not prone to deformation or fracture.
Excellent high temperature resistance and thermal stability
Parameters: Long term use temperature can reach 1600 ° C, melting point up to 2050 ° C. Low coefficient of thermal expansion (~8.0 x 10 ⁻⁶/° C).
Interpretation: It does not soften or oxidize in high temperature environments, has good thermal shock stability, and can withstand rapid cold and hot cycles.
High resistance and excellent insulation
Parameters: Room temperature volume resistivity>10 ¹⁴Ω· cm, dielectric strength 15-30 kV/mm.
Interpretation: It is an excellent insulation material that can maintain good electrical insulation performance even in high temperature environments, ensuring the safe operation of electronic devices.
Outstanding chemical stability
Parameters: Resistant to strong acids, strong alkalis, and various molten metals.
Interpretation: It exhibits inertness towards most chemical substances, is less prone to chemical reactions, and is suitable for corrosive environments.
Other characteristics
Low density: about 3.6-3.9 g/cm ³, lighter than most metals, which is beneficial for equipment lightweighting.
Biological inertness: High purity alumina is harmless to human tissues and is widely used in the medical field.

Core issues of product application and solution
Based on the above performance, alumina ceramics solve the pain points of traditional materials (such as metals and plastics) that are prone to wear, corrosion, and failure under extreme working conditions.
Wear resistant parts field
Applications: sealing rings, nozzles, liners, grinding balls, cutting tools.
Problem solving: Solved the problems of decreased accuracy, shortened lifespan, frequent replacement and shutdown caused by equipment wear, greatly improving production efficiency and equipment reliability.
Electronic and electrical field
Application: Circuit board, insulation sleeve, spark plug, vacuum suction cup.
Problem solving: Provides stable insulation protection under high temperature and high voltage, preventing circuit breakdown and short circuit, ensuring the performance and safety of electronic components.
Chemical and metallurgical fields
Application: Crucible, furnace tube, conveying pipeline, wear-resistant lining.
Solution: Resist the erosion of high-temperature molten metals and highly corrosive chemical media, replace expensive precious metals, and reduce equipment maintenance costs.
Medical and semiconductor fields
Applications: Artificial joints, dental materials, wafer carriers, positioning pins.
Problem solving: Provide solutions that are biocompatible, highly clean, non-magnetic, and resistant to particle contamination, meeting the ultra-high precision requirements of medical safety and semiconductor manufacturing.

Why choose us?
When choosing an alumina ceramic supplier, what you need is not just a product, but also a reliable solution partner.
Advantage 1: Accurate formula and process control
We use high-purity raw materials and advanced dry pressing, isostatic pressing, and injection molding processes to ensure the consistency and reliability of our products from microstructure to macroscopic performance, eliminating hidden defects.
Advantage 2: Deep processing and customization capabilities
We have precise CNC grinding, laser processing, and polishing capabilities. We can not only provide standard parts, but also customize complex shaped parts according to your drawings. The tolerance control can reach micrometer level, achieving perfect assembly.
Advantage 3: Comprehensive technical support and selection services
Our engineering team will provide you with full technical support from material selection, structural design to application optimization, helping you choose the most suitable grade of alumina ceramic, avoiding excess or insufficient performance, and achieving maximum cost-effectiveness.

Customer real case (anonymous)
Background of the case: A large steel enterprise has long faced the problem of rapid wear and frequent replacement of guide rollers on its high-temperature rolling line, resulting in production line downtime and high costs.
Facing challenges: high temperature (>1000 ° C), high-speed steel billet friction, frequent thermal shock.
Our solution: We have customized and developed a 95% alumina ceramic guide roller sleeve for it, utilizing its extremely high temperature resistance, wear resistance, and excellent thermal shock stability.
Achievement: Customer feedback shows that the service life of ceramic guide rollers is more than 20 times that of metal rollers, greatly reducing downtime and replacement time. Annual maintenance costs have been reduced by over 60%, resulting in a significant return on investment.

What material issues or challenges have you encountered regarding wear resistance, temperature resistance, or insulation in the use of your product? Welcome to leave a message and communicate with us. We are willing to use our professional technical capabilities to solve your problems.

Brudeze Ceramics supplies and sells a wide range of high-quality quartz glass, including alumina ceramics, zirconia ceramics, silicon nitride ceramics, aluminum nitride ceramics, silicon carbide ceramics, boron carbide ceramics, bioceramics, machinable ceramics, etc. We can meet the customization requirements of various ceramic products.

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