Below are a few common types of flap disc materials:
1. CERAMIC ALUMINA
If you are looking for maximum performance in a flap disc, Ceramic is the best option. The ceramic grains micro-fracture as they grind, constantly exposing sharp edges and maintaining a high cut rate for the life of the disc. It is ideal for workpieces made from standard steel, tool steel, armored steel, high-nickel alloys, stainless steel and aluminum, and it performs exceptionally well on hard-to-grind metals.
In combination with a top coat, ceramic alumina provides a fast cut rate, and a cooler grinding temperature to help protect valuable, heat-sensitive components and prevent heat discoloration on the workpiece. The top coat also helps prevent loading - the accumulation of bits of workpiece material on the flap disc - with soft alloys. Our Ceramic option is top coated and is also contaminant-free so it will perform exceptionally well on stainless steel.
2. ZIRCONIA ALUMINA
A flap disc made from 100% zirconia alumina allows for aggressive stock removal and high-performance edge grinding. Zirconia alumina is self-sharpening, and it holds up exceptionally well under high temperatures and pressures. With proper use and maintenance, it provides a rapid cut and long lifespan. It is ideal for workpieces made from cast iron, carbon steel, structural steel and stainless steel. If you are looking for a 100% zirconia alumina our Tiger Paw is an excellent choice.
3. CERAMIC ALUMINA/ZIRCONIA ALUMINA BLEND
A blend of ceramic alumina and zirconia alumina provides fast grinding, reliable performance and a long disc life. This grain combination grinds with less effort than many other. Our flap disc leverages a contaminant-free blend is ideal for flat surface grinding, particularly on workpieces made from structural steel, carbon steel, stainless steel and cast iron.
4. ALUMINUM OXIDE
A disc made from aluminum oxide has a hard, durable grain and a strong initial cut rate, and it offers fast stock removal and consistent performance. Aluminum oxide is ideal for workpieces made of materials such as steel and cast iron, as well as for all-purpose use. It is not shelf-sharpening, however - its single crystals will dull during use. Overall, it provides a blend of performance and value.
