Χρώματα και βερνίκια - Εκτίμηση αλλοιώσεων επιχρισμάτων - Χαρακτηρισμός του πλήθους και του μεγέθους ελαττωμάτων και της έντασης των ομοιόμορφων αλλαγών στην εμφάνιση - Μέρος 10: Αξιολόγηση του βαθμού ινώδους διάβρωσης

ISO 4628-10:2016 specifies a method for assessing the amount of filiform corrosion developed from a scribed mark by measuring the length of the longest filament L and the most frequent length M of filaments. Pictorial examples provided in Annex A of this part of ISO 4628 illustrate different ratings for the length of the longest filament L and the most frequent length M of the filaments. A comparison of the test panels with the 12 pictures in Annex A does not supersede the obligatory numerical assessment (method 1 or 2). ISO 4628-1 defines a system used for designating the quantity and size of defects and the intensity of uniform changes in appearance of coatings and outlines the general principles of the system. This system is intended to be used, in particular, for defects caused by ageing and weathering, and for uniform changes such as colour changes, for example yellowing.