DIN EN ISO 4628-3-2004 色漆和清漆.漆膜降解的评定.缺陷量值、大小以及外观均匀改变程度的规定.第3部分:生锈等级的评定
Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 3: Assessment of degree of rusting (ISO 4628-3:2003); German version EN ISO 4628-3:2003
The document specifies a method for assessing the degree of rusting of coatings by comparison with pictorial standards. The pictorial standards provided in this part of ISO 4628 show coated steel surfaces which have deteriorated to different degrees by a combination of rust broken through the coating and visible underrust.