The most common form of aluminum oxide is brown aluminum oxide. Other forms of aluminum oxide include pink and white aluminum oxide, which present a stark contrast to brown aluminum oxide. Pink and white aluminum oxide break down quicker than brown aluminum oxide, but pink and white produce a cleaner finish, meaning pink aluminum oxide and white aluminum oxide are more similar to silicon carbide than to brown aluminum oxide.
Spectrum sandpaper is made with white aluminum oxide for an optimum pre-polishing surface.
Typically, Spectrum suggests sanding metal no higher than 600 grit as Menzerna’s universal metal polishing compounds (439T Heavy Cut & P14F Medium Cut) are rated to cut out 280 and 320-400 grit sanding marks, respectively). For a cut-stage polish on stainless steel, consider using a sisal wheel to remove sanding marks more efficiently than a standard cotton buffing wheel.