Adhesive-backed/PSA discs are ideal for contoured surfaces and used for blending, finishing, and polishing. The discs are heat resistant and constructed with a flexible adhesive backing that can be easily attached or removed from the backing pad.
Choosing the correct abrasive material for your surface can shorten grinding time, reduce cost, and prevent premature wear. Aluminum oxide, for example, is a great all-around abrasive material, while diamond is used on specific materials like ceramic.
Aluminum oxide is the most commonly used abrasive. Best-suited for general purpose deburring and blending, it is tough, economical and fracture-resistant. Commonly used on ferrous alloys, high-tensile materials, and wood.
Cooler-cutting and more durable than natural aluminum-based products, ceramic provides a sharp, high-purity grain. Commonly used for precision grinding of steels, hard alloys and exotic materials.
More durable than aluminum oxide, zirconia-alumina is best for medium- to heavy-material removal. The material grains constantly fracture to produce new sharp edges. Commonly used on carbon steels, aerospace alloys, nickel alloys, aluminum, cast iron, forgings and some stainless steels.
Grit
Use larger grits/coarser grades for removing more material over a larger contact area. Use smaller grits/finer grades where the final finish is important. The chart below applies to only ANSI grit sizes.
Use larger grits/coarser grades for removing more material over a larger contact area. Use smaller grits/finer grades where the final finish is important. The chart below is applied to ANSI grit sizes.
Adhesive-backed/PSA discs are ideal for contoured surfaces and used for blending, finishing, and polishing. The discs are heat resistant and constructed with a flexible adhesive backing that can be easily attached or removed from the backing pad.
Abrasives 
