White Fused Alumina High Purity Al2O3 99.9% 325mesh Calcined Aluminium Oxide Powder for Polishing/ Grinding/ Refractory

Product Description

Product Description

White Fused Alumina for sandblasting
White Fused Alumina for sandblasting abrasive is processed by high quality Alumina as raw material and utilized by unique advanced technology. It is characterized by short grinding time, high efficiency, good returns , low price and so on. In particular, its advantages such as high hardness, big specific gravity, good chemical stability and unique self-sharpening , it becomes the first choice for the sandblasting technics, meanwhile, it is also the ideal material for sandblasting and derusting, workpiece cleaning, and polishing.

White Fused Alumina For Precision Casting
White Fused Alumina is the high grade refractory raw material, main crystal system isα- Al2O3, white color. It is characterized by high volume density, low apparent porosity, stable volume and thermal stability performance and so on, it is can be used for shell making material of heavy steel casting, especially the alloy casting, core sand, coating material and melt film precision casting, and it is also can be used as half precision blasting and precision blasting material for hardened steel, alloy steel and so on.
 
White Fused Alumina for abrasive
This kind of White Fused Alumina electrically fused in arc furnace with high grade processed Alumina as raw material. It has higher hardness and slight lower toughness comparing with brown fused Alumina . It is also characterized by its high purity, ability of self-sharpening, better cutting, less heat emit, higher efficiency, acid and alkali resistance, good thermal stability. As the abrasive materials, it is suitable for grinding high-speed, high carbon steel, as loose grains, it widely used for bonded and coated abrasives , polishing, precision casting and so on.

White Fused Alumina for refractory
Comparing with brown fused Alumina . It is also characterized by its high purity, acid and alkali resistance, good thermal stability. It's the high grade refractory materials.

Specification

Property	Specification
Customization	Available
Artificial Abrasive Type	Alumina Abrasives
Application	Polishing, Sandblasting, Abrasive
Function	Refractory
Source	Artificial Abrasives
Particle Size	Abrasive
Hardness	Superabrasive
Bulk Density	1.53–1.99 g/cm³
Al2O3	≥99.5%
SiO2	≤0.1%
Na2O	≤0.3%
Fe2O3	≤0.05%
Color	White
Shape	Granular, Powder, Micro Powder
Raw Material	Aluminum Oxide Powder
Melting Point	Approx. 2250°C
Transport Package	According to The Customer's Request
Specification	According to the customer's request
Origin	China
HS Code	2818109000

Usage

1. Sandblasting, polishing and grinding of metal and glass.

2. Filling of the paint, wear-resistant coating, ceramic, and glaze.

3. Making of grinding wheel, sandpaper and emery cloth. 
4. Production of ceramic filter membranes, ceramic tubes, ceramic plates. 5. For the use of wear-resistant floor. 
6. Sandblasting of circuit boards. 
7. Sandblasting of ships, aircraft engines, train tracks and outer bodies.
8. Various White Fused Alumina grains can be produced according to customers' different demands.

Packaging & Shipping

Standard packaging: 25 kg double-layer woven bags; also available in ton bags (jumbo bags).

Custom packaging available upon customer request.
Store in a dry, moisture-free environment. Avoid mixing with ferrous abrasives.

Certifications

Our Company

FAQ

Q1: What is White Fused Alumina?
White Fused Alumina (WFC, Code: WA) is a high-purity synthetic abrasive made by melting premium industrial alumina (Al2O3) at over 2000°C in an electric arc furnace, followed by cooling, crushing, magnetic iron removal, and precision screening.

Q2: What is the difference between White Fused Alumina and Brown Fused Alumina?
Raw material: WFC uses high-purity alumina; BFC uses bauxite.
Al2O3 content: WFC ≥99%, BFC ≥95%.
Hardness: WFC is slightly harder and more brittle; BFC has higher toughness.
Application: WFC is preferred for precision grinding and high-cleanliness requirements; BFC is more cost-effective for general-purpose grinding and heavy stock removal.

Q3: What is the Al2O3 content of your product?
Standard grade is ≥99%, and high-purity grade can reach 99.5% or above.

Q4: What is the typical lead time?
For standard grades and sizes in stock, lead time is usually 7–14 days. Custom orders may take 15–20 days depending on specifications and quantity.

Q5: Is the iron content really that low?
Yes. Fe2O3 ≤0.05% after magnetic separation. This ensures no discoloration or iron contamination on workpieces — critical for stainless steel, electronics, and optical applications.

Q6: Which payment terms do you accept?
We accept T/T, L/C, and other common international payment methods. Specific terms can be discussed based on order volume and customer relationship.

Q7: What quality certifications do you have?
Our products comply with FEPA (Federation of European Producers of Abrasives) standards for grit sizing. Additional certifications such as ISO 9001, REACH, and RoHS are available upon request.

Q8: Can you provide samples?
Yes, free samples are available for quality evaluation. Please contact us with your required grit size and quantity.