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    ISO 4628

     

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    ISO 4628-1:2016(EN) Paints and varnishes — 

    Evaluation of degradation of coatings — Designation of quantity and size of defects, and of the intensity of uniform changes in appearance — Part 1: General introduction and designation system

    ISO 4628 contains of the following parts, under the general title 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: ISO 4628-1:2016(EN) Paints and varnishes — Part 1: General introduction and designation system
    ISO 4628-1:2016 defines a system 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 used throughout ISO 4628. ISO 4628-1:2016 is intended to be used, in particular, for defects caused by ageing and weathering, and for uniform changes, for example yellowing.
    The other parts of ISO 4628 share pictorial standards or other means for evaluating particular types of defect. As far as possible, already existing evaluation schemes have been used as the basis.
    ISO 4628-1:2016 is also used for assessing defects not covered by the other parts of ISO 4628.
    — Part 3: ISO 4628-3:2016(EN)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 4628-3:2016 defines a method for assessing the degree of rusting of coatings by comparison with pictorial standards.
    The pictorial standards provided in ISO 4628-3:2016 show coated steel surfaces which have deteriorated to different degrees by a combination of rust broken through the coating and visible underrust.
    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, ISO 4628-3:2016 is intended to be used, in particular, for defects caused by ageing and weathering, and for uniform changes such as color changes, for example yellowing
    — Part 4: ISO 4628-4:2016(EN) 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 4628-4:2016 provides a method for assessing the degree of cracking of coatings by comparison with pictorial standards.
    — Part 5: ISO 4628-5:2016(EN) 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
    This part of ISO 4628-5:2016 shares a method for assessing the degree of flaking of coatings by comparison with pictorial standards.
    — Part 6: ISO 4628-6:2011(EN)
    Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 6: Assessment of degree of chalking by tape method
    ISO 4628-6:2011 shares pictorial reference standards for designating the degree of chalking of paint coatings. It also describes a method by which the degree of chalking is rated. In using this method, it is essential that care be taken to distinguish between true degradation products and adhering dirt, particularly when chalking is slight.

    — Part 7: ISO 4628-7:2016(EN) Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 7: Assessment of degree of chalking by velvet method
    ISO 4628-7:2016 defines a method suitable, in particular, for rating the degree of chalking on white or colored exterior coatings and coating systems on rough surfaces
    The test method explained in this standard can also be used for the assessment of the degree of chalking of coatings and coating systems on smooth surfaces, but the method specified in ISO 4628-6:2011 is preferable for this purpose.
    The given test method is applicable to coatings and coating systems on mineral substrates, like fiber cement, brick, concrete, and renderings, independent of the structure of the surface. The method can be used quite effectively by experienced operators and is recommended for laboratory use as well as for on-site evaluation.
    — Part 8: ISO 4628-8:2012(en)
    Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 8: Assessment of degree of delamination and corrosion around a scribe or other artificial defect
    — Part 10: ISO 4628-10:2016(EN) 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 defines 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 ISO 4628-10:2016 to 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
    If you need more support with ISO 4628-1, ISO 4628-2, ISO 4628-3, ISO 4628-4, ISO 4628-5, ISO 4628-6,ISO 4628-7, ISO 4628-8 or ISO 4628-10, please contact us at +91-8595603096 or support@pacificcert.com

    ISO-26000