Abstract
Sixteen experimental high strength low alloy steels were exposed to natural flowing sea water in the laboratory and in the harbour of den Helder at a depth of 8 m for a period of 2 years. Differences in the corrosion rates of the various steels were less pronounced in the laboratory tests than in the harbour. The effects of the alloying elements aluminium, chromium: and molybdenum on general corrosion and pitting were found to be in general agreement with those obtained from earlier exposure tests at depths of 45 and 90 m in the North Sea. A fairly good correlation was found between the general corrosion rates measured from weight losses and the results obtained from electrochemical techniques based on determination of polarisation resistance.
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