Medium-temperature Calcined BFA (F-grit)

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As a professional supplier of high-performance abrasives and technical services, Alfa Chemistry offers advanced medium-temperature calcined brown fused alumina (BFA) F-grit. Engineered specifically for the demanding requirements of bonded abrasive applications, this specialized abrasive undergoes a meticulously controlled calcination process at precise temperatures, tailored to each grit size. This innovative treatment effectively gasifies surface impurities and internal organic matter, elevating the performance benchmarks for a wide range of grinding and cutting tools.

Key Features

Superior Toughness: Increased resistance to fracture and impact, ensuring longer abrasive life and consistent performance under demanding conditions.
Enhanced Hydrophilicity: Improved wettability and surface activity, promoting stronger, more consistent bonds with various resin and ceramic matrices, leading to superior tool integrity.
Exceptional Cleanliness: Reduced levels of surface contaminants and internal organic residues result in cleaner abrasive tools, minimizing defects and improving finished workpiece quality.
Minimized Magnetic Content: Lower magnetic impurities contribute to a purer abrasive, which is critical for applications sensitive to magnetic interference or desiring a pristine finish.
Optimized Hardness: It maintains or even enhances the inherent hardness of brown fused alumina, ensuring aggressive cutting action and prolonged sharpness.

Available Grades and Applications

We offer two distinct grades, HG-AB008 and HG-AB009, each engineered to optimize performance for specific applications:

HG-AB008 Abrasive

Particle Shape: Sharp and angular with low bulk density.
Attributes: High self-sharpening behavior, efficient heat dissipation, and enhanced grinding performance.
Typical Uses: Ideal for mid-tier bonded abrasives designed for fast cutting and high grinding ratios.
Material Suitability: It performs well on low-carbon steel, alloy steel, tough bronze, and rubber.

HG-AB009 Abrasive

Particle Shape: Cubic, uniform, and regular with high bulk density.
Attributes: Uniform stress distribution in abrasive tools, reduced risk of black spotting and thermal expansion.
Typical Uses: Suited for heavy-load processing, including double-disc grinding, outer cylindrical grinding, and malleable cast iron machining.
Performance Advantage: It produces workpieces with excellent surface finish and extended tool life.

Technical Data

Chemical Composition

Al₂O₃	Fe₂O₃	SiO₂	TiO₂
95.55%	0.09%	1.05%	2.50%

Physical Properties

Type	Mohs Hardness	Color	Microhardness	Melting Point	Specific Gravity	Hydrophilia (F46)	Toughness (F24)
α-Al₂O₃	≥9.0	Brown	1900-2200	2090 ℃	≥3.95	170mm	60%

Bulk Density

Grain Size	HG-AB008	HG-AB009
F12	1.83-1.93	1.95-2.05
F14	1.82-1.92	1.94-2.04
F16	1.81-1.91	1.92-2.02
F20	1.79-1.89	1.91-2.01
F22	1.77-1.87	1.90-2.00
F24	1.75-1.85	1.89-1.99
F30	1.72-1.82	1.87-1.97
F36	1.69-1.79	1.84-1.94
F40	1.67-1.77	1.82-1.92
F46	1.65-1.75	1.80-1.90
F54	1.63-1.73	1.77-1.87
F60	1.61-1.71	1.75-1.85
F70	1.59-1.69	1.73-1.83
F80	1.57-1.67	1.71-1.81
F90	1.55-1.65	1.68-1.78
F100	1.52-1.62	1.66-1.76
F120	1.50-1.60	1.63-1.73
F150	1.47-1.57	1.60-1.70
F180	1.45-1.55	1.58-1.68
F220	1.42-1.52	1.56-1.66

Available Grit Sizes

We offer a complete range of FEPA-standard grit sizes from F8 to F1200, supporting both coarse grinding and precision polishing.

By choosing our medium-temperature calcined BFA F-grit, you gain access to a superior abrasive solution that promises enhanced performance, greater efficiency, and extended tool life for your bonded abrasive products. Partner with us for your abrasive needs and experience the difference that superior quality and expert technical support can make in your operations.