AS/NZS 4680 Standard Update

The Galvanizers Association of Australia (GAA) wishes to advise the release of a new edition of the AS/NZS 4680 Standard for Hot Dip Galvanizing, effective May 2025.

 

"AS/NZS 4680 originated in 1934 as part of the AS K53 series, later to be redesignated AS 1650 upon metrication in 1974. The designation AS/NZS 4680 was first adopted in 1999 when separate Standards for zinc coated steel, wire, strip, and hollow sections were developed for Australia and New Zealand. AS/NZS 4680 has traditionally been technically aligned with ISO 1461, itself adopting a 4th edition in 2022.

The latest edition of AS/NZS 4680 released in May 2025 takes account of the technical changes in ISO 1461 and the American ASTM A123, adopting the concepts of the ISO Standard, while providing a local focus.

Designers wishing to specify fabricated HDG need only reference two Standards: one covering the design and durability of HDG steel (AS/NZS 2312.2), and the other dealing with the manufacturing process and tolerances (AS/NZS 4680). For those designers requiring hot dip galvanized threaded fasteners used in structural applications, AS/NZS 1214 is normally specified.

The Advisory Note (available for download here) introduces the key features of the hot dip galvanizing Standard, AS/NZS 4680:2025." 

 

Source:

Galvanizers Association of Australia (GAA) brochure

"Hot Dip Galvanizing: Manufactured to last. An introduction to the new Standard AS/NZS 4680." Retrieved May 2025.