INTERNATIONAL STANDARD
Hotdipgalvanizedcoatingson fabricatedironandsteelarticles- Specificationsandtestmethods
Revetements par galvanisation chaud sur produits finis en fonte eten acier - Specifications et methodes d'essai
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Contents
Page
Foreword. iv1 Scope. 12 Normative references.3 Terms and definitions 24 General requirements.4.2 4.1 Hot dip galvanizing bath. General. 3 44.3 4.4 Information to be supplied by the purchaser. Safety. 4 45 Acceptance inspection and sampling. 46 Galvanized coating properties. 46.1 6.2 Thickness.. Appearance. 56.2.1 General. 56.2.2 6.2.3 Reference areas Test methods. 66.3 6.4 Renovation.. Adhesion. 7 76.5 Acceptance criteria.. 87 Declaration of pliance. 9Annex A (normative) Information to be supplied. 10Annex B (normative) Safety and process requirements. Annex C(informative) Renovation of uncoated or damaged areas. 12Annex D (informative) Determination of thickness. 13 14Annex E (informative) Corrosion resistance of galvanized coatings 15Bibliography. 16
Foreword
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Submittee SC 4 Hot dip coatings (galvanized etc.) in collaboration with the European Committeefor Standardization (CEN) Technical Committee CEN/TC 262 Metallic and other inorganic coatings in
This fourth edition cancels and replaces the third edition (ISO 1461:2009) which has been technicallyrevised.
The main changes are as follows:
--definitions have been added for 'galvanizer' ‘after-treatment ‘additional coating’ ‘wet storagestain’ and ‘duplex system′ in Clause 3;- the difficulty to remove flux residues and zinc ash when access is restricted has been recognised in 6.1;-- procedures for choice of reference areas have been clarified and additional requirements to avoidreference areas on certain small ancillary elements on a larger article have been added in 6.2.3;to include additional information on the suitability of different methods of renovation given in 6.3; of a zinc-containing paint to conform with ISO 3549 have been removed; Annex.C has been extended-all requirements related to coating thickness including Table 3 and Table 4 have been placedwithin 6.2.3;the lower coating thicknesses that can result in ultra-low reactive steels are recognised within 6.5 including requirements linked to the size of the article in the control sample previouslyin new requirements for these steel types in 6.5;information on corrosion resistance of galvanized coatings has been updated including thereference to ISO 9224 for longer-term corrosion resistance in Annex E.
Any feedback or questions on this document should be directed to the user's national standards body. A plete listing of these bodies can be found at
Hotdipgalvanizedcoatingsonfabricatedironandsteel articles-Specificationsandtestmethods
1Scope
This document specifies the general properties of hot dip galvanized coatings and test methods for hot dip galvanized coatings applied by dipping fabricated iron and steel articles (including certainto the following: castings) in a zinc melt (containing not more than 2 % of other metals). This document does not apply
a] sheet wire and woven or welded mesh products that are continuously hot dip galvanized;b) tube and pipe that are hot dip galvanized in automatic plants;c)hot dip galvanized products (e.g. fasteners) for which specific standards exist and which can include additional requirements or requirements which are different from those of this document.
NOTE Individual product standards can incorporate this document for the galvanized coating by quotingits number or can incorporate it with modifications specific to the product. Different requirements can also be made for galvanized coatings on products intended to meet specific regulatory requirements.
This document does not apply to after-treatment or additional coating of hot dip galvanized articles.
2Normativereferences
The following documents are referred to in the text in such a way that some or all of their contentundated references the latest edition of the referenced document (including any amendments) applies.
ISO 752 Zinc ingots
ISO 1460 Metallic coatings Hot dip galvanized coatings on ferrous materials -Gravimetricdetermination of the mass per unit area
ISO2064 MetallicandotherinorganiccoatingsDefinitionsand conventionsconcerning themeasurementof thickness
method
ISO 2859-1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
quality (LQ) for isolated lot inspection
ISO 2859-3 Sampling procedures for inspection by attributes - Part 3: Skip-lot sampling procedures
ISO 10474 Steel and steel products - Inspection documents
ISO 14713-2:2019 Zinc coatings -Guidelines and remendations for the protection against corrosionof iron and steel in structures - Part 2: Hot dip galvanizing
EN 1179 Zinc and zinc alloys - Primary zinc
EN 13283 Zinc and zinc alloys - Secondary zinc
