Brown Fused Alumina is created by melting calcined bauxite in an electric arc furnace at temperatures exceeding 2000 degrees Celsius. Its notable feature is its exceptionally high toughness, leading to a prolonged lifespan, although it may not excel in cool cutting. This material finds extensive use in various applications, including regular steel, carbon steel, forging steel, ingot steel, cast iron, malleable iron, and certain non-ferrous metals. Chemical Composition (Grit 36): Particle Size Distribution: Available in F8–F1200, following the PSD according to FEPA standard 42 and GB/T 2481. Customization to JIS, ANSI, or specific customer requirements is provided. Bulk Density (g/cm3): Bulk Density serves as a key indicator expressing the shape difference. RUNBAO categorizes regular brown into two types based on grain shape: AF10 and AF20. AF10 features a blocky shape with high impact resistance, while AF20 boasts an angular shape with sharp cutting edges, prioritizing cutting quality. Medium shapes (Bulk density between AF10 and AF20) are also available based on specific customer requirements.

To enhance the fracture resistance of grains, standard brown fused alumina undergoes a calcination process at 1050 degrees Celsius. This treatment aims to recover internal micro-cracks, release internal stress, and improve hydrophility within the grains. Consequently, this process leads to increased toughness in the grains, resulting in a longer-lasting tool life for the wheel. We represent this treatment as "C1050."

To withstand high-stress working conditions, standard brown fused alumina can undergo a heat treatment at 1350 degrees Celsius through open annealing, causing a transformation in color from brown to blue. This treatment is designed to rejuvenate numerous crystal imperfections and alter the crystal lattice with foreign oxides. As a result, the grains experience improvements in both tool life and cutting quality. We denote this treatment as "HT."

In order to endure demanding working conditions, regular brown fused alumina can undergo an open annealing heat treatment at 1350 degrees Celsius. This process induces a color change from brown to blue and is specifically crafted to revitalize various crystal imperfections. Additionally, it modifies the crystal lattice by introducing foreign oxides. The outcome is a notable enhancement in both the tool life and cutting quality of the grains. This treatment is identified as "HT."

To enhance the performance of grains even further, standard brown fused alumina undergoes a ceramic coating on the surface following a heat treatment at 1350 degrees Celsius through open annealing. This process is denoted as "HTCC."