SIST EN ISO 4628-10:2024 PDF

Paints and varnishes - Evaluation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 10: Assessment of degree of filiform corrosion (ISO 4628-10:2024)

Название (английский):

SIST EN ISO 4628-10:2024

Paints and varnishes - Evaluation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 10: Assessment of degree of filiform corrosion (ISO 4628-10:2024)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 15
Дата публикации:: 14 августа 2024 г.
ICS:: 87.040
Технический комитет:: IBLP - Paints and varnishes

Язык документа:

ruen

Срок поставки:3 раб. дн. (перевод)

Цена:225 €

Описание (английский):

This document 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. Pictorial examples provided in Annex A of this document illustrate different ratings for the degree of filiform corrosion. A comparison of the test panels with the 12 pictures in Annex A does not supersede the obligatory numerical assessment (method 1 or 2). ISO 4628-1 defines a system used for designating the quantity and size of defects and the intensity of uniform 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.

Технические детали

SKU: SIST EN ISO 4628-10:2024

Abstract

Overview

EN ISO 4628-10:2024 (ISO 4628-10:2024) is the current European/International standard for the quantitative assessment of filiform corrosion on painted or varnished surfaces. It defines a clear, reproducible method to assess the amount and size of filiform corrosion that develops from a scribed mark by measuring two parameters: the length of the longest filament (L) and the most frequent filament length (M). Pictorial examples in Annex A illustrate typical ratings but do not replace the mandatory numerical measurement methods.

Key topics and requirements

Scope and purpose
- Applies to coatings where filiform corrosion develops from scribed marks or damaged edges.
Defined parameters
- L - mean length of the longest filament (measured from left and right sides).
- M - most frequent filament length (calculated from measurements on left/right sides or multiple zones).
Two measurement methods
- Method 1: For regular, symmetric corrosion - measure maximum distances left/right to obtain L and M as mean values.
- Method 2: For irregular corrosion - measure L and multiple M values across zones and compute overall M using the specified formulae.
Visual aids
- Annex A provides 12 pictorial examples (L/M ratings) to help interpret severity visually; these are informative only and do not supersede numerical assessment.
Assessment conditions
- Perform assessments under specified illumination (see ISO 13076).
Reporting & results
- Results expressed compactly (e.g., filiform corrosion, L5/M3 = longest filament 5 mm, most frequent length 3 mm).
- Test report should include coating ID, reference to ISO 4628-10:2024, surface details, illumination, whether coating was stripped, deviations, anomalies, and date.

Practical applications and users

EN ISO 4628-10:2024 is used for:

Quality control and acceptance testing of coatings in industrial, architectural and marine applications.
Failure analysis and root-cause investigations when coatings show under-film corrosion.
Contract compliance and specification verification for coating suppliers and contractors.
Research and development to quantify resistance of paint systems to filiform attack. Typical users:
Coating manufacturers and formulators
Corrosion engineers and inspectors
Independent test laboratories and certification bodies
Asset owners, specifiers, architects, and maintenance planners

Related standards

ISO 4628-1 - general system for designating quantity/size of defects and uniform changes in appearance.
ISO 4623-1 - definition and background on filiform corrosion (steel substrates).
ISO 13076 - lighting and procedure for visual assessments of coatings (normative reference for illumination).

Keywords: EN ISO 4628-10:2024, ISO 4628-10, filiform corrosion assessment, paints and varnishes, coating defect evaluation, L/M rating, Method 1, Method 2, Annex A pictorial examples, test report requirements.

Overview

Key topics and requirements

Scope and purpose
- Applies to coatings where filiform corrosion develops from scribed marks or damaged edges.
Defined parameters
- L - mean length of the longest filament (measured from left and right sides).
- M - most frequent filament length (calculated from measurements on left/right sides or multiple zones).
Two measurement methods
- Method 1: For regular, symmetric corrosion - measure maximum distances left/right to obtain L and M as mean values.
- Method 2: For irregular corrosion - measure L and multiple M values across zones and compute overall M using the specified formulae.
Visual aids
- Annex A provides 12 pictorial examples (L/M ratings) to help interpret severity visually; these are informative only and do not supersede numerical assessment.
Assessment conditions
- Perform assessments under specified illumination (see ISO 13076).
Reporting & results
- Results expressed compactly (e.g., filiform corrosion, L5/M3 = longest filament 5 mm, most frequent length 3 mm).
- Test report should include coating ID, reference to ISO 4628-10:2024, surface details, illumination, whether coating was stripped, deviations, anomalies, and date.

Practical applications and users

EN ISO 4628-10:2024 is used for:

Quality control and acceptance testing of coatings in industrial, architectural and marine applications.
Failure analysis and root-cause investigations when coatings show under-film corrosion.
Contract compliance and specification verification for coating suppliers and contractors.
Research and development to quantify resistance of paint systems to filiform attack. Typical users:
Coating manufacturers and formulators
Corrosion engineers and inspectors
Independent test laboratories and certification bodies
Asset owners, specifiers, architects, and maintenance planners

Related standards

ISO 4628-1 - general system for designating quantity/size of defects and uniform changes in appearance.
ISO 4623-1 - definition and background on filiform corrosion (steel substrates).
ISO 13076 - lighting and procedure for visual assessments of coatings (normative reference for illumination).

SIST EN ISO 4628-10:2024 PDF

Технические детали

Abstract

Overview

Key topics and requirements

Practical applications and users

Related standards

Похожие стандарты

Abstract

Overview

Key topics and requirements

Practical applications and users

Related standards

Похожие стандарты

Paints and varnishes — Evaluation of quantity and size of defects, and of intensity of uniform changes in app…

Paints and varnishes - Lighting and procedure for visual assessments of coatings (ISO 13076:2019)

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