Alumina Al2O3 Ceramic

Overview of Aluminum Oxide Ceramic

Aluminum Oxide (Al₂O₃), or alumina, is the workhorse of advanced technical ceramics, offering an outstanding balance of properties, wide availability, and cost-effectiveness. Through precise control of purity and microstructure, we engineer a range of alumina grades that deliver exceptional hardness, excellent electrical insulation, and superior wear and corrosion resistance, making it a versatile solution for countless industrial challenges.

Features of Aluminum Oxide Ceramic

• Excellent Wear & Abrasion Resistance: Provides exceptional service life in applications involving sliding, rolling, or abrasive media, far outperforming metals.
• High Hardness & Mechanical Strength: Offers great rigidity and resistance to mechanical loads, maintaining dimensional stability under stress.
• Superior Electrical Insulation: Features high dielectric strength and volume resistivity, even at elevated temperatures.
• Good Chemical Inertness: Highly resistant to corrosion from a wide range of acids, alkalis, and other harsh chemicals.
• High-Temperature Capability: Retains its properties and shape at temperatures up to 1700°C, with a high melting point of 2050°C.

Applications of Aluminum Oxide Ceramic

• Industrial Wear Components: Seal rings, pump sleeves, liners, thread guides, and blast nozzles.
• Electronics & Electrical: Substrates and packages for ICs, spark plug insulators, and high-voltage insulators.
• Medical & Laboratory: Biocompatible implants, prosthetics, surgical tool tips, and labware for analytical instruments.
• Automotive & Aerospace: Sensor housings, insulating washers, and armor systems.
• Thermal Processing: Furnace tubes, setters, and kiln furniture for heat treatment processes.

Specification Table of Aluminum Oxide Ceramic

Property	Unit	Alumina 96%	Alumina 99.5%	Alumina 99.8%
Al₂O₃ Content	%	96.0	99.5	99.8
Density	g/cm³	3.75	3.89	3.95
Flexural Strength	MPa	330	380	450
Vickers Hardness	GPa	12	15	16
Thermal Conductivity	W/m·K	24	30	35
Max. Use Temperature	°C	1650	1700	1750
Dielectric Strength	kV/mm	15	17	20

Company Profile

Tanki New Materials Co.Ltd. focus on the research and development, production and sales of ceramic products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2015, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Aerogel, Aluminum Nitride, Aluminum Oxide, Boron Carbide, Boron Nitride, Ceramic Crucible, Ceramic Fiber, Quartz Product, Refractory Material, Silicon Carbide, Silicon Nitride, ect. please feel free to contact us.

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Aluminum Oxide Ceramic

1. What is the difference between 96% and 99.5% alumina?
The primary difference is purity. Higher purity (99.5%+) alumina offers improved mechanical strength, hardness, thermal conductivity, and corrosion resistance, but is typically more expensive. 96% alumina is a highly cost-effective option for many demanding applications.

2. Is alumina ceramic chemically resistant?
Yes, alumina is highly inert and resistant to a wide range of chemicals, making it suitable for seals, pumps, and lab equipment exposed to corrosive media. However, it can be attacked by strong acids and alkalis at elevated temperatures.

3. Can you machine Aluminum Oxide Ceramic to custom shapes?
Yes, but it is extremely hard and abrasive. It must be machined in the "green" state before final sintering or using diamond-grinding tools after sintering to achieve precise, custom dimensions.

4. How does alumina compare to zirconia in terms of strength?
While standard alumina is very strong, zirconia generally has higher flexural strength and fracture toughness, making it more resistant to impact. Alumina, however, typically offers higher hardness, better wear resistance, and superior thermal stability.

5. Is Aluminum Oxide Ceramic biocompatible?
Yes, high-purity alumina is exceptionally biocompatible and is widely used in the medical field for hip joint replacements, dental implants, and bone screws due to its excellent wear resistance and inertness in the body.