Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 10: Assessment of degree of filiform corrosion (ISO 4628-10:2016, Corrected version 2016-06-01)
This part of ISO 4628 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.
ΚΩΔΙΚΟΣ ΠΡΟΪΟΝΤΟΣ:
CYS EN ISO 4628-10:2016
This part of ISO 4628 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.