White Fused Alumina (WFA) is a high-purity aluminum oxide abrasive produced by fusing calcined alumina in an electric arc furnace at extremely high temperatures. With a typical Al₂O₃ content of over 99%, it offers superior hardness, chemical stability, and minimal iron contamination—making it ideal for precision applications across industries.
White Fused Alumina (WFA) is a high-purity aluminum oxide abrasive produced by fusing calcined alumina in an electric arc furnace at extremely high temperatures. With a typical Al₂O₃ content of over 99%, it offers superior hardness, chemical stability, and minimal iron contamination—making it ideal for precision applications across industries.
WFA is characterized by its high friability and sharp-edged grains, which allow it to fracture during use, continuously exposing new cutting edges for enhanced grinding and polishing performance. It is widely used in surface treatment, tool sharpening, blasting, and as a raw material in refractory and ceramic manufacturing.
Thanks to its non-reactive and chemically inert nature, White Fused Alumina is suitable for applications in clean environments such as aerospace, medical device production, and semiconductor polishing. It is available in macro and micro grit sizes, and can be tailored to meet specific technical requirements for both bonded and coated abrasive systems.
White Fused Alumina (WFA) offers a unique combination of purity, sharpness, and durability, making it a preferred abrasive for applications that require consistent cutting action and high surface finish quality. Produced by fusing high-grade calcined alumina in an electric arc furnace, it achieves a purity level of over 99%.
Its angular, high-friability grain structure provides aggressive cutting while maintaining a smooth finish—ideal for surface treatment of stainless steel, hardened steel, titanium, and other sensitive alloys. The material is chemically inert and contains virtually no free iron, ensuring it will not discolor or contaminate processed parts.
WFA maintains excellent performance under high temperature and pressure, making it suitable for bonded and coated abrasives, refractory bricks, polishing pads, and high-tech ceramics.
White Fused Alumina offers several distinct advantages when compared to other abrasives such as Brown Fused Alumina, Silicon Carbide, or natural corundum. With its high purity (≥99% Al₂O₃) and low iron content, WFA is an ideal choice for precision applications that require contamination-free processing and excellent surface integrity.
Unlike Brown Fused Alumina, which is tougher but contains more impurities, White Fused Alumina delivers cleaner cuts and a more refined finish, making it suitable for stainless steel, titanium, and medical-grade components. Compared to Silicon Carbide, WFA offers better chemical stability and is less aggressive, enabling controlled grinding and longer service life in bonded systems.
These advantages make White Fused Alumina the abrasive of choice for applications that demand accuracy, material safety, and finish consistency—especially in high-spec industries like aerospace, electronics, and medical devices.
White Fused Alumina is produced by the high-temperature melting of premium calcined alumina in an electric arc furnace. It meets international quality standards including ISO and FEPA, and is engineered for applications requiring high hardness, high purity, and precise grain size control.
WFA is chemically stable and non-reactive with most metals, making it especially suitable for grinding, lapping, and blasting operations involving stainless steel, aluminum, and titanium alloys. It exhibits excellent friability, enabling self-sharpening during use to maintain cutting efficiency and surface quality.
Typical purity exceeds 99% Al₂O₃ with minimal iron and silica content. White Fused Alumina is available in a wide range of grit sizes, from macro grains (F12–F220) to micro powders (F240–F1200), as well as JIS and P-series equivalents. Packaging options include 25kg paper or plastic bags and 1-ton jumbo bags.
| Grain Size WFA | Component | Required by GB Standard | Typical Value of Our Product |
| #4 – #80 | Al2O3 | ≥ 99.10% | 0.9965 |
| Na2O | ≤ 0.35% | 0.0022 | |
| Fe2O3 | – | 0.0003 | |
| SiO2 | – | 0.0003 | |
| #90 – #150 | Al2O3 | ≥ 99.10% | 0.9935 |
| Na2O | ≤ 0.40% | 0.003 | |
| Fe2O3 | – | 0.0004 | |
| SiO2 | – | 0.0005 | |
| #180 – #220 | Al2O3 | ≥ 98.60% | 0.992 |
| Na2O | ≤ 0.50% | 0.0036 | |
| Fe2O3 | – | 0.0005 | |
| SiO2 | – | 0.0008 |
| Size | Na2O % | Magnetic material% | SiO2 % |
| 180#-0 | ≥99 | ≤0.4 | ≤0.1 |
| 200#-0 | ≥99 | ≤0.4 | ≤0.1 |
| 320#-0 | ≥99 | ≤0.4 | ≤0.1 |
| 0-1mm | ≥99 | ≤0.4 | ≤0.1 |
| 1-3mm | ≥99 | ≤0.4 | ≤0.1 |
| 3-5mm | ≥99 | ≤0.4 | ≤0.1 |
| 5-8mm | ≥99 | ≤0.4 | ≤0.1 |
| 8-12mm | ≥99 | ≤0.4 | ≤0.1 |
White Fused Alumina delivers a range of performance and process benefits across industries that demand clean, controlled, and high-efficiency surface treatment. Its sharp angular grains and high friability ensure effective material removal with reduced workpiece stress.
Thanks to its high alumina content (≥99%) and minimal impurity levels, WFA is ideally suited for use in sensitive environments such as aerospace, medical device manufacturing, and stainless steel processing. It prevents discoloration, contamination, and structural distortion during abrasive operations.
Environmentally, White Fused Alumina supports sustainable industrial practices due to its recyclability and low dust generation. Its extended service life reduces total abrasive consumption and lowers operational costs over time.
We can offer 1MT/25Kg Woven plastic bags, and 25Kg Paper bags.
Our Black Silicon Carbide is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
White Fused Alumina is a high-purity synthetic abrasive made by melting calcined alumina in an electric arc furnace. It forms hard, sharp-edged crystals ideal for precision grinding, lapping, and blasting operations.
WFA is commonly used in bonded and coated abrasives, surface preparation, precision polishing, ceramic shaping, and as a refractory raw material in high-temperature furnaces.
White Fused Alumina has higher purity and friability, making it better suited for applications requiring minimal contamination and consistent fine finishing. Brown Fused Alumina is tougher and more economical for heavy-duty grinding.
Yes, due to its low iron content and non-reactive nature, WFA is ideal for processing stainless steel, titanium, and other sensitive materials without discoloration or surface damage.
It is available in a wide range of FEPA grit sizes from F12 to F1200, as well as micro powder grades and JIS/P-series equivalents for specialized needs.
Store in a clean, dry, and sealed environment to prevent contamination and moisture absorption. Avoid exposure to humidity or extreme temperature fluctuations.
Yes, depending on the application and grit size, WFA can often be recycled multiple times, particularly in blasting and polishing processes with controlled environments.
Yes. It is non-toxic, recyclable, and supports sustainable manufacturing by reducing abrasive waste and minimizing airborne dust.
Standard packaging includes 25kg paper or plastic bags and 1-ton jumbo bags. Custom packaging can be arranged upon request.
Yes, we export to clients worldwide, including markets in Europe, Southeast Asia, the Middle East, and North and South America.
Founded in 2005, our company is a leading manufacturer of high-quality Silicon Carbide (SiC) and various types of fused alumina products. With nearly two decades of industry expertise, we have established a reputation for delivering durable and performance-driven materials for a wide range of applications, including abrasives, refractories, and ceramics.
