NF EN ISO 8501-4

NF EN ISO 8501-4

October 2020
Standard Current

Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 4 : initial surface conditions, preparation grades and flash rust grades in connection with water jetting

This document specifies a series of preparation grades for steel surfaces after removal/partial removal of water-soluble contaminants, rust, previous paint coatings and other foreign matter by high-pressure water jetting. The various grades are defined by written descriptions together with photographs that are representative examples within the tolerances for each grade as described in words.This document specifies both initial surface conditions and after-cleaning flash rust grades, also defined by written descriptions together with representative photographic examples.This document applies the cleanliness of the surface to its visual appearance.Consideration in addition to visual appearance is given to invisible contaminants and roughness or profile. Physical and chemical methods for testing for soluble salts and other invisible contaminants on the visually clean surface are found in the ISO 8502 series. The roughness or profile characteristics of the surface are found in the ISO 8503 series.

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Main informations

Collections

National standards and national normative documents

Publication date

October 2020

Number of pages

39 p.

Reference

NF EN ISO 8501-4

ICS Codes

25.220.10   Surface preparation

Classification index

T35-501-4

Print number

1

International kinship

ISO 8501-4:2020

European kinship

EN ISO 8501-4:2020
Sumary
Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 4 : initial surface conditions, preparation grades and flash rust grades in connection with water jetting

This document specifies a series of preparation grades for steel surfaces after removal/partial removal of water-soluble contaminants, rust, previous paint coatings and other foreign matter by high-pressure water jetting. The various grades are defined by written descriptions together with photographs that are representative examples within the tolerances for each grade as described in words.

This document specifies both initial surface conditions and after-cleaning flash rust grades, also defined by written descriptions together with representative photographic examples.

This document applies the cleanliness of the surface to its visual appearance.

Consideration in addition to visual appearance is given to invisible contaminants and roughness or profile. Physical and chemical methods for testing for soluble salts and other invisible contaminants on the visually clean surface are found in the ISO 8502 series. The roughness or profile characteristics of the surface are found in the ISO 8503 series.

Replaced standards (1)
NF EN ISO 8501-4
March 2007
Standard Cancelled
Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 4 : initial surface conditions, preparation grades and flash rust grades in connection with high-pressure water jetting

Le présent document offre un outil pour évaluer visuellement les conditions de surface initiale, les dégrés de préparations et les degrés de rouille liés au décapage à l'eau sous haute pression. Cette évaluation repose sur 23 clichés étalons représentatifs.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Généralités
  • 5 État initial du subjectile
  • 6 Choix de la méthode de préparation du subjectile
  • 7 Choix du degré de préparation
  • 8 Évaluation
  • Bibliographie
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