NF EN ISO 4628-2

NF EN ISO 4628-2

March 2016
Standard Current

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

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.

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Main informations

Collections

National standards and national normative documents

Publication date

March 2016

Number of pages

19 p.

Reference

NF EN ISO 4628-2

ICS Codes

87.040   Paints and varnishes

Classification index

T30-140-2

Print number

1

International kinship

ISO 4628-2:2016

European kinship

EN ISO 4628-2:2016
Sumary
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

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.

Replaced standards (1)
NF EN ISO 4628-2
May 2004
Standard Cancelled
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

ISO 4628-2:2003 describes a method for assessing the degree of blistering of coatings by comparison with pictorial standards. NOTE The pictorial standards have been adopted from ASTM D 714, Standard Test Method for Evaluating Degree of Blistering of Paints. The correlation between the ISO and ASTM rating systems is shown in an annex.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Évaluation
  • 5 Expression des résultats
  • 6 Rapport d'essai
  • Annexe A Images pour l'étalonnage
  • Annexe B Correspondance entre les systèmes d'évaluation ISO 4628-2et ASTM D
    714
  • Bibliographie
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