AS 4312:2019 PDF
This Standard provides guidelines for the classification of atmospheric corrosivity zones in Australia and their effect on the corrosion of steel and other metals.
The guidelines in this Standard use the corrosion rate classifications defined in ISO 9223 to delineate atmospheric corrosivity zones.
Environments that are not atmospheric, such as immersed, underground and splash zones, are not considered in this Standard. For these environments, refer to AS 2159 (piling) or AS/NZS 2041.1 (buried corrugated metal structures).
