Zirconia alumina (ZrAl) abrasive discs are commonly used to grind metallurgical metallographic specimens. These discs can effectively remove any irregularities caused by the cutting process and minimize further deformation. One of the key advantages of using Zirconia alumina discs is their durability and longevity. They are usually recommended for grinding steel due to the sharpening ability of abrasive particles. Water is used as a coolant during grinding to prevent overheating and remove debris. Zirconia alumina discs are available with pressure-sensitive backing.