ISO 7629:1987 (R2019)

Identifies the types of flaws of surface and material after testing of disc brake pads, and specifies the method of measuring these flaws and of setting out the results. Flaws to be considered are of four types: cracks (figure 1); edge flaking (figure 2); blistering and pitting (figure 3); material separation from the support or material lamina separation (figure 4).