NA 002

DIN Standards Committee Coatings and Coating Materials

Project

Paints and varnishes - Evaluation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 10: Assessment of degree of filiform corrosion (ISO/FDIS 4628-10:2023); German version FprEN ISO 4628-10:2023

Abstract

This document 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 document 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.

Begin

2021-07-12

WI

00139746

Planned document number

DIN EN ISO 4628-10

Project number

00201134

Responsible national committee

NA 002-00-07 AA - General test methods for coating materials and coatings  

Responsible european committee

CEN/TC 139 - Paints and varnishes  

Responsible international committee

ISO/TC 35/SC 9/WG 31 - Properties after application  

draft standard

Paints and varnishes - Evaluation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 10: Assessment of degree of filiform corrosion (ISO/DIS 4628-10:2022); German and English version prEN ISO 4628-10:2022
2022-09
Order from Beuth Verlag

previous edition(s)

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); German version EN ISO 4628-10:2016
2016-07

Order from Beuth Verlag

Contact

Dipl.-Chem.-Ing.

Bernd Reinmüller

Am DIN-Platz, Burggrafenstr. 6
10787 Berlin

Tel.: +49 30 2601-2447
Fax: +49 30 2601-42447

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