IS 101 : Part 11 : Sec 10 : 2024/ISO 4628-10 : 2024 - Part 11 Evaluation of Degradation of Coatings - Designation of Quantity and Size of Defects and of Intensity of Uniform Changes in Appearance - Section 10 Assessment of Degree of Filiform Corrosion
NATIONAL FOREWORD
This Indian Standard which (Part 11/Sec 10) is identical to ISO 4628-10 : 2024 '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' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Paints, Varnishes and Related Products Sectional Committee and approval of the Chemical Division Council.
IS 101 'Methods of test for ready mixed paints and enamel initially, was published as a unified standard in 1950. The standard was subsequently revised in 1961, 1964 and 1986. During the third revision, recognizing the need for clarity, the committee decided to restructure it by splitting into various parts based on type of tests. These parts included tests on liquid paints (general and physical), chemical examination, film formation, optical assessments, and mechanical tests on paint film formation. Each part was further subdivided into sections, addressing specific tests within those categories. Further, it was decided that whenever a new test method was introduced, it would be integrated into the relevant part of IS 101, ensuring that the standard remained comprehensive.
This section IS 101 (Part 11/Sec 10) specifies 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.
This Indian Standard (Part 11) is published in several sections. The other sections of this series are:
Sec 1 General introduction and designation system
Sec 2 Assessment of degree of blistering
Sec 3 Assessment of degree of rusting
Sec 4 Assessment of degree of cracking
Sec 5 Assessment of degree of flaking
Sec 6 Assessment of degree of chalking by tape method
Sec 7 Assessment of degree of chalking by velvet method
Sec 8 Assessment of degree of delamination and corrosion around a scribe or other artificial defect
The text of ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions and terminologies are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:
a) Wherever the words 'International Standard' appear referring to this standard, they should be read as 'Indian Standard'; and
b) Comma (,) has been used as a decimal marker in the International Standard, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.