ISO 9351:2025

Galvanic anodes for cathodic protection in seawater and saline sediments

Publication date:   Feb 19, 2025

General information

60.60   Standard published   Feb 19, 2025

ISO

ISO/TC 156 Corrosion of metals and alloys

International Standard

77.060   Corrosion of metals

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Scope

This document defines requirements and gives recommendations for the chemical composition, electrochemical properties, physical tolerances and test and inspection procedures for cast galvanic anodes of aluminium, magnesium and zinc-based alloys for cathodic protection in seawater, saline sediment and brackish water.
Information on salinity ranges can be found in Annex A.
The requirements and recommendations of this document can be applied to any available anode shape for cast anodes, e.g. trapezoid, circular, half-spherical cross sections, bracelet type.
Whilst other metals, such as soft iron, can be used as galvanic anode material to protect more noble metals than iron and steel, these are not covered in this document.

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PUBLISHED
ISO 9351:2025
60.60 Standard published
Feb 19, 2025