ISO 4628-4:1982

Paints and varnishes — Evaluation of degradation of paint coatings — Designation of intensity, quantity and size of common types of defect — Part 4: Designation of degree of cracking

Provides pictorial standards for designating. The quantity of cracking is rated by reference to table 2 of ISO 4628/1 and using as examples figures 1 or 2, depending on the type of cracking. The average size of the cracks is designated according to the classification.