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F24
SEPPE ABRASIVE
2818101000
SEPPE Brown Fused Alumina, also known as Brown Aluminum Oxide or BFA, is a tough fused alumina abrasive produced from high-quality bauxite in an electric arc furnace. With high hardness, strong toughness, stable chemical composition and good thermal resistance, it is widely used for bonded abrasives, coated abrasives, blasting media, surface preparation, refractory materials, lapping, polishing and grinding applications.
▸ Brown Fused Alumina is produced by melting calcined bauxite, carbon material and iron filings in an electric arc furnace, followed by crushing, magnetic separation, screening and particle size classification.
▸ The material combines high hardness with good toughness, making it suitable for applications that require aggressive cutting, stable wear resistance and reliable grain strength.
▸ SEPPE supplies macro grits, micro grits and powder grades according to abrasive, blasting, refractory and surface preparation requirements.
▸ High Hardness: Mohs hardness around 9 provides strong cutting ability for grinding, blasting and surface preparation applications.
▸ Good Toughness: Brown fused alumina grains resist premature breakage and support stable abrasive performance under mechanical impact.
▸ Stable Chemistry: High alumina content and controlled Fe₂O₃, SiO₂ and TiO₂ levels help support consistent abrasive and refractory performance.
▸ Wide Particle Size Range: F grits, P grits and W micro powder grades are available for bonded abrasives, coated abrasives, blasting, polishing and lapping.
▸ Heat Resistance: Fused alumina structure supports refractory raw material use and high-temperature industrial applications.
| Purpose | Specification | Al₂O₃ | Fe₂O₃ | SiO₂ | TiO₂ |
|---|---|---|---|---|---|
| Abrasive F | 4#-80# / 90#-150# | 95.0% Min | 0.3% Max | 1.5% Max | 3.0% Max |
| Abrasive F | 180#-240# | 94.0% Min | 0.3% Max | 1.5% Max | 3.5% Max |
| Abrasive P | 8#-80# / 100#-150# | 95.0% Min | 0.2% Max | 1.2% Max | 3.0% Max |
| Abrasive P | 180#-220# | 94.0% Min | 0.3% Max | 1.5% Max | 3.5% Max |
| Micro Powder W | 230#-1200# | 92.5% Min | 0.5% Max | 1.8% Max | 4.0% Max |
| Color | Brown / Dark Brown |
| Main Crystal Phase | α-Al₂O₃ |
| Mohs Hardness | Approx. 9 |
| Specific Gravity | Approx. 3.9-4.0 g/cm³ |
| Melting Point | Approx. 2050°C |
| Available Forms | Macro grits, micro grits, powder and custom particle size grades |
▸ High-quality bauxite selection → Electric arc furnace fusion → Cooling and crystallization → Crushing → Magnetic separation → Screening and classification → Final inspection → Packaging.
▸ The process is designed to control alumina content, magnetic material, particle size distribution and grain cleanliness for stable abrasive performance.
▸ Chemical composition testing for Al₂O₃, Fe₂O₃, SiO₂, TiO₂ and other key oxides according to grade requirements.
▸ Particle size distribution inspection for F grits, P grits and W micro powder grades.
▸ Magnetic material control and visual cleanliness review to support abrasive and refractory application consistency.
▸ Batch COA, sample testing and third-party inspection can be arranged according to purchase requirements.
▸ Common packaging includes 25 kg bags, paper bags, 1 MT jumbo bags and customized packaging according to order requirements.
▸ Palletizing, container loading, private label packaging and inspection support can be arranged upon request.
▸ Store in dry conditions and protect bags from moisture, contamination and package damage before use.
▸ F grits are commonly used for bonded abrasives, P grits for coated abrasives, and W grades for micro powder, lapping, polishing and precision finishing applications.
▸ Yes. Brown fused alumina can be used as a blasting abrasive for rust removal, oxide scale removal, deburring and surface preparation before coating.
▸ Yes. Its alumina content, hardness and heat resistance make it suitable for refractory castables, bricks, kiln materials and high-temperature ceramic products.
▸ Yes. Macro grits, micro grits, powder grades and custom particle size specifications can be discussed according to application and purchase requirements.
Contact SEPPE for grit size selection, chemical specification, COA, samples, packaging and bulk order support.
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