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BS EN ISO 4628-8:2012

BS EN ISO 4628-8:2012

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Paints and varnishes. Evaluation of degradation of coatings. Designation of quantity and size of defects, and of intensity of uniform changes in appearance Assessment of degree of delamination and corrosion around a scribe or other artificial defect

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

02-28-2013

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Procedure
6 Calculation and expression of results
7 Test report
Bibliography

Defines a method for assessing delamination and corrosion around a scribe or other artificial defect on a coated panel or other coated test specimen, caused by a corrosive environment.

This part of ISO4628 specifies a method for assessing delamination and corrosion around a scribe or other artificial defect on a coated panel or other coated test specimen, caused by a corrosive environment.

This part of ISO4628 does not cover evaluation of pitting corrosion or pit depth.

NOTE1 Examples of corrosive environments are artificial atmospheres such as salt spray, as used in the test method specified in ISO9227,[7] and sea water immersion as used in the test method specified in ISO15711.[8] Natural environments can also be used.

NOTE2 The extent of other defects can also be determined at the same time as delamination and corrosion. Methods are given as follows:

  • blistering in accordance with ISO4628-2;[2]

  • rusting in accordance with ISO4628-3;[3]

  • cracking in accordance with ISO4628-4;[4]

  • flaking in accordance with ISO4628-5;[5]

  • filiform corrosion in accordance with ISO4628-10.[6]

Committee
STI/10
DevelopmentNote
Supersedes 02/123754 DC. (04/2005) Supersedes BS 3900-H8(2005) & 10/30205803 DC. (03/2013) Reviewed and confirmed by BSI, May 2018. (05/2018)
DocumentType
Standard
Pages
18
PublisherName
British Standards Institution
Status
Current
Supersedes

ISO 15711:2003 Paints and varnishes — Determination of resistance to cathodic disbonding of coatings exposed to sea water
ISO 4628-4:2016 Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 4: Assessment of degree of cracking
ISO 4628-3:2016 Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 3: Assessment of degree of rusting
ISO 4628-10:2016 Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 10: Assessment of degree of filiform corrosion
ISO 4628-5:2016 Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 5: Assessment of degree of flaking
ISO 4628-1:2016 Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 1: General introduction and designation system
ISO 9227:2017 Corrosion tests in artificial atmospheres — Salt spray tests
ISO 3270:1984 Paints and varnishes and their raw materials — Temperatures and humidities for conditioning and testing
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

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