The markings on a cutting disc can provide important information about the disc’s material, structure, and suitable applications. For example, on the marking of Merryland E12081042 Cut off Wheel, the designation is WA46TBF. Here’s how you might interpret “WA46TBF”:
WA
This stands for the type of abrasive grain used in the disc. “WA” represents white aluminum oxide, which is used for cutting carbon steel, alloy steel, stainless steel, cast iron, and non-ferrous metals.
46
This number represents the grain size of the abrasive material. In this case, “46” indicates a medium grain size, which is suited for a balance between material removal rate and disc life.
T
This letter stands for the hardness grade of the disc. “T” typically represents a hard grade, meaning the disc is resistant to wear and has a long lifespan.
B
This letter is for the structure of the abrasive grains in the disc. “B” usually represents a closed structure, which means that the grains are densely packed. This type of structure is appropriate for work on flat surfaces and for long life.
F
Finally, this letter indicates the type of bond used to keep the abrasive grains together. “F” represents a resin bond, which is the most common type of bond for cutting and grinding discs due to its balanced combination of strength, flexibility, and resistance to heat.
