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AS/NZS 4680:2025

[Current]

AS/NZS 4680:2025 specifies the general properties and test methods for hot dip galvanized coatings applied by dipping fabricated iron and steel articles in a zinc melt.
Published: 27/06/2025
Pages: 25
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
2 General requirements
2.1 General
2.2 Hot dip galvanizing bath
2.3 Test certificates and technical information exchange
2.4 Safety
3 Acceptance inspection and sampling
4 Galvanized coating properties
4.1 Appearance
4.2 Thickness
4.2.1 General
4.2.2 Test methods
4.2.3 Reference areas
4.3 Renovation
4.3.1 Renovation by the galvanizer
4.3.2 Renovation after site handling and installation
4.4 Adhesion
4.5 Acceptance criteria
4.5.1 Ultra-low reactive steels
5 Test report
Appendix A
A.1 General
A.2 Information to be supplied by the purchaser
A.3 Information to be supplied by the galvanizer
Appendix B
Appendix C
Appendix D
D.1 General
D.2 Physical and mechanical properties
D.3 Appearance and coating thickness
D.3.1 General
D.3.2 Sample size for testing
D.3.3 Thickness testing
D.3.4 Post-treatment of hot dip galvanized reinforcing steel
D.4 Traceability
D.5 Bending of reinforcing steel before and after hot dip galvanizing
Appendix E
Appendix F
Bibliography
Cited references in this standard
[Current]
Metal finishing — Preparation and pretreatment of surfaces, Part 4: Abrasive blast cleaning of steel
[Pending Revision]
Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings, Part 2: Hot dip galvanizing
[Current]
Paints for steel structures, Part 9: Organic zinc-rich primer
[Current]
Paints for steel structures, Part 15: Inorganic zinc silicate paint
[Current]
Metallic coatings - Hot dip galvanized coatings on ferrous materials - Gravimetric determination of the mass per unit area
Content history
[Superseded]
AS/NZS 4680-2006 REC:2017
DR AS/NZS 4680:2024