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ISO 4628-2:2016

Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 2: Assessment of degree of blistering

Publication date:   Jan 12, 2016

General information

90.93 Standard confirmed   Jun 10, 2021

ISO

ISO/TC 35/SC 9 General test methods for paints and varnishes

International Standard

87.040   Paints and varnishes

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Scope

ISO 4628-2:2016 specifies a method for assessing the degree of blistering of coatings by comparison with pictorial standards.
The pictorial standards provided in this part of ISO 4628 illustrate blisters in the sizes 2, 3, 4, and 5, and each size in the quantities (densities) 2, 3, 4, and 5.
ISO 4628‑1 defines the system used for designating the quantity and size of defects and the intensity of 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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 4628-2:2003

NOW

PUBLISHED
ISO 4628-2:2016
90.93 Standard confirmed
Jun 10, 2021