Service

E-Mail

WhatsApp

Phone

White Fused Alumina for Precision and Purity

High-Purity WFA for Industrial Grinding and Refractory Applications

Engineered from high-grade alumina, our white fused alumina delivers superior hardness, low contaminants, and excellent thermal stability.

Explore Products

White Fused Alumina Grades for Polishing & Precision Use

What is White Fused Alumina (WFA)?

White Fused Alumina (WFA) is a high-purity synthetic abrasive made by fusing calcined alumina in an electric arc furnace. It features high hardness, sharp edges, low iron content, and excellent thermal resistance—ideal for applications requiring precision and cleanliness.

  • Al₂O₃ Purity: ≥ 99%
  • Typical Sizes: F12 to F220 (macro), F240 to F2000 (micro)
  • Applications: Grinding tools, lapping, polishing, ceramics, precision casting
White Fused Alumina Grit

White Fused Alumina Grit

Sharp-edged macro grits (F12–F220) for high-speed grinding, abrasive wheels, and ceramics processing.

ISO Certified | Factory Direct

White Fused Alumina Micro Powder

White Fused Alumina Micro Powder

F240–F2000 fine powders for ultra-precision polishing, lapping, and microabrasive applications in optics and electronics.

ISO Certified | Factory Direct

White Fused Alumina for Refractory Use

White Fused Alumina for Refractory

High-purity aggregate ideal for refractory bricks, insulating castables, and precision high-temp components.

ISO Certified | Factory Direct

Key Benefits of White Fused Alumina for Industrial Use

Engineered for high-purity and extreme hardness, our White Fused Alumina is ideal for demanding abrasive, ceramic, and refractory applications requiring superior performance and chemical inertness.

Mohs Hardness 9

Delivers precision cutting, lapping, and polishing. Ideal for fine abrasives and bonded grinding tools used in electronics and optics.

Up to 1850°C Thermal Stability

Performs reliably in kilns, induction furnaces, and high-temperature ceramic systems requiring low thermal conductivity and purity.

Exceptional Chemical Inertness

Inert to acids and alkalis, making it ideal for chemical-resistant refractories and critical surface treatments.

High Purity (≥99.3% Al₂O₃)

Ultra-low iron and silica impurities ensure stable performance in sensitive applications like semiconductors and foundry coatings.

Electrically Insulating

Used in ceramic insulators, spark plug components, and high-voltage applications due to strong dielectric properties.

ISO 9001:2015 Certified

Manufactured under certified quality systems to ensure traceability, consistency, and global supply chain compliance.

White Fused Alumina Technical Specifications

Manufactured from high-purity alumina, our White Fused Alumina meets FEPA standards and is ideal for grinding, polishing, and high-performance refractory applications.

Chemical Composition Content (%)
Al₂O₃ ≥ 99.2%
Na₂O ≤ 0.4%
Fe₂O₃ ≤ 0.05%
SiO₂ ≤ 0.10%
Physical Properties Value
Mohs Hardness 9.0
Specific Gravity 3.90–4.00 g/cm³
Bulk Density 1.75–1.95 g/cm³
Melting Point 2050°C
Crystal Structure Alpha Alumina (Corundum)
Color White
Available Grit Sizes (FEPA Standard)
Macro Grains F12, F14, F16, F20, F22, F24, F30, F36, F40, F46, F54, F60, F70, F80, F90, F100, F120, F150, F180, F220
Micro Powders F240, F280, F320, F360, F400, F500, F600, F800, F1000, F1200, F1500, F2000

Industrial Applications of White Fused Alumina

Trusted by precision manufacturers worldwide, our White Fused Alumina is ideal for high-purity abrasives, advanced ceramics, and refractory systems requiring exceptional hardness and thermal stability.

Precision Polishing with White Fused Alumina

Precision Polishing

Ideal for optical lens finishing, semiconductor lapping, and ultra-fine polishing processes requiring high-purity abrasives.

Ceramic Abrasive Tools

Ceramic Abrasives

Used in bonded tools for aerospace and electronics machining, offering sharp cutting edges and thermal resistance.

White Fused Alumina in High-Purity Refractories

High-Alumina Refractories

Widely used in kiln furniture, slide gates, and induction furnaces requiring ultra-low impurity materials.

Coated Abrasives with WFA

Coated Abrasives

Used in sandpaper, micro-finishing films, and lapping sheets for precision surface treatment on metals and ceramics.

Non-Conductive Industrial Flooring with WFA

Non-Conductive Flooring

Incorporated into anti-static and chemical-resistant epoxy coatings for cleanroom and lab environments.

WFA in Metallurgical Applications

Metallurgical Additives

Applied in specialty steel refining and non-ferrous alloy production where purity and heat resistance are critical.

Boost Your Production with High-Performance White Fused Alumina

ISO-certified supply, customizable grit sizes, fast global shipping. Talk to our team today for expert support and competitive pricing.

Get My Quote Now

What Industry Leaders Say About Our White Fused Alumina

Trusted by professionals in grinding, polishing, and precision ceramics industries. Here’s how our WFA has helped improve their production and quality.

“The white fused alumina powder delivers extremely consistent polishing performance. We’ve achieved higher surface finish standards with fewer rejects.”

Michael Chen
Michael Chen
Quality Engineer, OptiPolish Tech

“We’ve integrated WFA into our ceramic part manufacturing process. Its purity and sharpness help ensure superior dimensional control and strength.”

Sarah Johnson
Sarah Johnson
Technical Director, Precision Ceramics Ltd.

“Customer service is top-notch. The team helped us choose the right micro-powder grade for polishing aerospace alloys—precision results every time.”

David Martinez
David Martinez
Materials Manager, AeroSurface Labs

Frequently Asked Questions About White Fused Alumina

Learn more about WFA before sourcing it for your grinding, polishing, ceramic, or refractory applications.

White Fused Alumina (WFA) is a synthetic abrasive made from calcined alumina fused in an electric arc furnace. It features high purity (≥99%), excellent hardness, and low iron content, ideal for precision grinding and polishing.

WFA is widely used in coated abrasives, bonded abrasives, polishing compounds, advanced ceramics, and high-temperature refractory products.

Coarse grits (F12–F36) are ideal for aggressive cutting and shaping, while finer grits (F60–F220) are used for polishing and finishing. Micro powders (F240–F2000) are preferred for ultra-precision lapping and polishing tasks.

Our WFA is produced under ISO 9001 standards with strict quality control, ensuring uniform particle distribution, high hardness, and very low impurities. We also offer flexible customization and global support.

Yes. We can tailor grit size, chemistry, packaging, and delivery based on your application needs. Contact us for technical consultation and free samples.

Contact Us

Get in touch with our experts to discuss your white fused alumina requirements.

Our Contact Information

Address

Zhongyuan Wanda Office Building, Zhongyuan District, Zhengzhou City, Henan Province

Website

https://sanhuiabrasives.com/