Abstract
The atmospheric corrosion behaviour of pure iron and Fe–Mn, Fe–Cr, Fe–Cu and Fe–Ni alloys have been investigated by short-term exposure tests and an accelerated test in the laboratory. The role of each alloying element was thereby assessed without the interference of carbon and other impurities found in mild steel. Large amounts of chromium (10%) reduced the corrosion rate most, but the usefulness of copper as an addition was confirmed. Good reproducibility was obtained in the estimation of loose rust, and results show the benefits of certain additions in providing an adherent rust.
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