Product Description:
White corundum is produced from industrial alumina powder, which is melted in an arc furnace at a temperature exceeding 2000 degrees and then cooled. The resulting material undergoes grinding and shaping. This is followed by magnetic separation of iron and particle size screening to yield different products. White corundum features a tight texture, high hardness, and angular shape, making it perfectly suited for various applications such as the manufacture of ceramics, resin consolidation abrasive tools, grinding, polishing, sandblasting, and even high-grade refractory materials.
Compared with brown corundum, white corundum has slightly higher hardness but lower toughness. It is also characterized by high purity, excellent self-sharpening, strong grinding capacity, low heat generation, high efficiency, and resistance to both acid and alkali corrosion and high temperature thermal stability. Moreover, the use of white corundum does not affect the workpiece color. It can be used for sandblasting during the process where iron powder residue is not allowed and its micro-powder version is suitable for wet sandblasting and grinding operations. The material's high processing speed and quality performance are also noteworthy. The amount of iron oxide is low, making it perfect for sandblasting without any iron residue.
Features:
Crystal Structure
The white corundum has a tripartite crystal system.
Strength
The compressive strength of white corundum is 2,000 MPa, while the tensile strength is 400 MPa. The flexural strength is 480 MPa.
Thermal Properties
White corundum has a thermal expansion coefficient of 8×10^-6 K^-1 and a thermal conductivity of 29 W/(m-K). It also exhibits high temperature stability, which allows it to withstand extremely high temperatures.
Electric Properties
The resistivity of white corundum is about 10^14 Ω-cm.
Technical Parameters:
Chemical Constitution
| Chemical |
Percentage |
| Al2O3 |
≥99.4% |
| SiO2 |
≤0.04% |
| Fe2O3 |
≤0.04% |
| Na2O |
≤0.30% |
Physical Properties
- Colour: white
- Mohs hardness: 9
- True density: 3.9 g/cm3
- Bulk density: 1.60~1.95 g/cm3
- Ig-Loss: ≤0.09%
Applications:
White corundum is a top-grade ceramic material that has gained widespread popularity in the industry owing to its exceptional features like high hardness, wear resistance, and corrosion resistance.
The white corundum is utilized in diverse applications, some of which are mentioned below:
- Grinding wheel: The white corundum grinding wheel functions as the primary finishing tool in metal processing. It has outstanding stability and high hardness, and it meets the requirements of diverse processing occasions.
- Abrasives: The white corundum abrasives majorly serve the purpose of grinding and polishing metal parts. Additionally, they aid in producing processing tools such as knives.
- Ceramic tools: The white corundum's exceptional hardness and excellent wear resistance make it suitable for manufacturing several ceramic tools.
- Valves: The white corundum valves exhibit excellent corrosion resistance when controlling highly corrosive media such as chemical, petroleum, and natural gas.
Support and Services:
Our White Aluminum Oxide product is backed by a team of technical experts who are available to provide support and assistance with any technical issues or questions that may arise. Our services include:
- Product recommendations based on your specific application needs
- Assistance with product selection and ordering
- Technical data and specifications
- Troubleshooting and issue resolution
- Customized product development
- Training and education on product usage and handling
We are committed to providing exceptional technical support and services to ensure that you get the most out of our White Aluminum Oxide product.
Packing and Shipping:
Product Packaging:
- 25kg bags
- Custom packaging available upon request
Shipping:
- Ships within 1-2 business days
- Shipping available worldwide
- Shipping costs calculated at checkout
