Brown aluminium oxide abrasive is fused and crystallized under high temperature from a mixture of bauxite and other materials. It is characterized by its high hardness, good toughness and sharp shape in particles. Suitable for grinding metals of high-tensile strength such as carbon stele, general purpose alloy steel, malleable cast-iron and hard bronze etc.

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Grit Size	Al2O3	TiO2	SiO2	Fe2O3	CaO	MgO
F4-F80	95.59-97.5	2.0-3.8	0.9	0.15	0.35	0.5
F90-F150	94.5-97.5
F180-F220	93.5-96.5