Factory Free sample Fused Alumina - Micro Sodium White Fused Alumina – Yufa
Factory Free sample Fused Alumina - Micro Sodium White Fused Alumina – Yufa Detail:
Compared With β-Al2O3 And α-Al2O3
Sodium oxide is a harmful impurity to white corundum. It forms β-Al2O3 with alumina in the molten state, and the amount of production increases with the increase of sodium oxide content. Na2O in white corundum mainly appears in the form of Na2O·11AL2O3 (β-Al2O3). For example, if the alumina raw material contains more than 0.6% sodium oxide, the white corundum produced with it will contain more than 10% β-Al2O3.
Compared with β-Al2O3, α-Al2O3 has ‘three highs’. First, it has a high melting point, Secondly a high density, and thirdly a high hardness, as shown in the following table:
| Phase | Chemical compositions | Crystal System | Density (g/cm3） | Micro hardness (Kg/mm²) | Melting point (℃) |
| α-Al2O3 | Al2O3 | Hexagonal | 4.0 | 2300 | 2050 |
| β-Al2O3 | Na2O·11Al2O3 | Trigonal | 3.24 | 1300~1600 | 1600 |
Chemical Composition
| Chemical Composition | Na2O % ≤ | Al2O3 % ≥ | SiO2 % ≤ | Fe2O3 % ≤ |
| Gurantee Value | 0.06 | 99.7 | 0.1 | 0.05 |
| Typical Value | 0.02 | 99.89 | 0.04 | 0.03 |
Advantages
The micro-sodium white fused alumina improves the melting point, particle density, bulk density, flexural strength, compressive strength, true density, hardness and other properties of white corundum products, laying a solid foundation for the product to enter the high-end market.
Applications
It is suitable for processing alloy steel, high hardness steel, high carbon steel and other materials with high hardness and high tensile strength.
Product detail pictures:
Related Product Guide:
To meet the customers' over-expected gratification , we have our robust crew to offer our best over-all support which includes marketing, income, coming up with, production, excellent managing, packing, warehousing and logistics for Factory Free sample Fused Alumina - Micro Sodium White Fused Alumina – Yufa , The product will supply to all over the world, such as: Botswana, Lithuania, Somalia, We always hold on the company's principle "honest, professional, effective and innovation", and missions of: let all drivers enjoy their driving at night, let our employees can realize their value of life, and to be stronger and service more people. We are determined to become the integrator of our product market and one-stop service provider of our product market.
By Honey from Thailand - 2017.09.28 18:29
The product classification is very detailed that can be very accurate to meet our demand, a professional wholesaler.
By Donna from Milan - 2018.06.18 17:25
