ASME B46.1

Surface Roughness Analysis

This Standard is concerned with the geometric irregularities of surfaces. It defines surface texture and its constituents: roughness, waviness, and lay. It also defines parameters for specifying surface texture. The terms and ratings in this Standard relate to surfaces produced by such means as abrading, casting, coating, cutting, etching, plastic deformation, sintering, wear, erosion, etc.

Source: https://www.asme.org/codes-standards/find-codes-standards/b46-1-surface-texture