A: Calcined aluminum oxide flap disc is suitable for grinding a wide range of materials, including stainless steel, carbon steel, titanium, aluminum, and non-metal materials such as wood, plastic, and ceramics. It is particularly effective on tough materials and heavy-duty applications.

A: The lifespan of calcined aluminum oxide flap disc varies depending on factors such as the grinding application, the pressure applied, and the grinding angle used. Generally, it can last up to 10 times longer than traditional grinding discs.

A: The grit size of calcined aluminum oxide flap disc determines the coarseness of the grinding surface. Choosing the correct grit size depends on the material being ground and the required finish. For heavy-duty grinding tasks, lower grit sizes (24-60 grit) are recommended. For finishing and polishing tasks, higher grit sizes (80-320 grit) are preferable.