SEDL / STP / STP435-EB / STP34093S

Atmospheric Corrosion of Aluminum and Its Alloys: Results of Six-Year Exposure Tests

Carter, VE
Investigator, The British Non-Ferrous Metals Research Association, London,

Pages: 14    Published: Jan 1968

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Abstract

Results of atmospheric corrosion tests on four aluminum alloys at five sites in Great Britain showed that corrosion, in the form of pitting, increased with atmospheric pollution. Corrosion/time curves became parallel to the time axis within two years at mild sites but at polluted industrial sites had not done so in six years. Aluminum alloys were more heavily attacked than high-purity aluminum, and a pure aluminum cladding gave considerable protection to an aluminum-copper-magnesium alloy.