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  • BS EN ISO 4628-8:2012

    Current The latest, up-to-date edition.

    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:  28-02-2013

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    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.

    Scope - (Show below) - (Hide below)

    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]

    General Product Information - (Show below) - (Hide below)

    Committee STI/10
    Development Note 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)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    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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