First-grade WFA Abrasive

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Our first-grade white fused alumina (WFA) abrasive is meticulously produced by melting high-purity aluminum oxide powder (over 98% Al2O3) in an electric arc furnace at temperatures exceeding 2000°C. This rigorous process followed by precise crushing and shaping, yields an abrasive material characterized by its dense texture, uniform crystal structure, exceptional purity, and superior hardness. These properties make it an indispensable choice for demanding surface treatment tasks, including the efficient removal of oxides and rust, and the significant improvement of surface finishes on various materials. WFA serves as a foundational abrasive for manufacturing high-quality resinoid and ceramic bonded tools, extending its utility to precision casting, blasting media, and even specialized chemical and refractory applications.

Key Features

High Purity: Composed of >98% Al2O3, ensuring minimal contamination.
Superior Hardness: Ideal for grinding high-strength materials such as quenched steel and high-speed steel.
Dense Structure: It offers excellent mechanical stability and wears resistance.
Thermal Resistance: Suitable for high-temperature environments and refractory uses.
Uniform Crystalline Morphology: It promotes consistent grinding performance and abrasive efficiency.

Available Grades and Applications

HG-AB021 Abrasive: This grade features a multi-faceted (polygonal) particle shape with a moderate bulk density. Abrasive tools made with HG-AB021 are known for their excellent sharpness, durability, and high grinding efficiency. It's primarily recommended for resinoid thin cutting wheels, resinoid grinding wheels, and ceramic grinding wheels used in processing high-carbon steel, alloy steel, and quenched steel, materials noted for their high hardness and tensile strength.
HG-AB022 Abrasive: Characterized by its cubic particle shape and regular, uniform grains, it boasts a high bulk density and high toughness. Abrasive tools crafted with HG-AB022 offer superior durability and demonstrate excellent balance with uniform stress distribution among the abrasive grains. This makes it an ideal choice for manufacturing both resinoid and ceramic bonded abrasive tools where consistent performance and tool longevity are paramount.

Technical Data

Chemical Composition

Al₂O₃	Fe₂O₃	Na₂O	SiO₂
99.52%	0.02%	0.24%	0.1%

Physical Properties

Type	Mohs Hardness	Color	Microhardness	Melting Point	Specific Gravity	Hydrophilia (F46)	Toughness (F24)
α-Al₂O₃	≥9.0	White	2200-2300	2000 ℃	≥3.90	82mm	41%

Bulk Density

Grain Size	HG-AB021	HG-AB022
F16	1.80-1.90	1.87-1.97
F20	1.78-1.88	1.85-1.95
F22	1.77-1.87	1.84-1.94
F24	1.76-1.86	1.84-1.94
F30	1.74-1.84	1.82-1.92
F36	1.73-1.83	1.81-1.91
F40	1.72-1.82	1.80-1.90
F46	1.71-1.81	1.79-1.89
F54	1.69-1.79	1.77-1.87
F60	1.67-1.77	1.75-1.85
F70	1.66-1.76	1.74-1.84
F80	1.64-1.74	1.72-1.82
F90	1.62-1.72	1.70-1.79
F100	1.60-1.70	1.68-1.78
F120	1.57-1.67	1.65-1.75
F150	1.54-1.64	1.62-1.72
F180	1.51-1.61	1.59-1.69
F220	1.48-1.58	1.56-1.66

Available Grit Sizes

We supply WFA abrasives in a comprehensive range of FEPA standard grit sizes, from F8 to F1200, suitable for both coarse grinding and ultra-fine finishing applications.
Customized grit distributions are available to meet client-specific or industry-standard requirements.

Whether used in abrasive tool manufacturing, metal surface treatment, or advanced material applications, our WFA abrasive ensures consistent performance and high efficiency, making it a reliable choice for modern production environments. Partner with us for your abrasive needs and experience the difference that superior quality and expert technical support can make in your operations.