C1-C5 Corrosion Chart

The C1 to C5 corrosion classification is based on BS EN ISO 12944-2 and BS EN ISO 9223 which is generally simplified as a table.

This system is used across many manufacturing and construction industries to enable a common language of corrosion environments to which each industry can adapt their particular disciplines.

Our chart is a general guide to the metal finishing process that we use for both aluminium and galvanized steel across the range of corrosion categories. Click HERE to access the chart.