Rz (Average Maximum Height of the Profile)

Rz, or Average Maximum Height of the Profile, is a measurement used in surface roughness evaluation. It represents the average of the heights of the five tallest peaks and the five deepest valleys within a specific sample length of a surface profile. Essentially, it provides an estimate of the maximum vertical variations on a surface's texture, indicating how rough or smooth it appears. This value helps assess the quality and functionality of machined or manufactured surfaces, influencing factors like friction, wear, and how well coatings or finishes will adhere.