Abstract
Corrosion resistance of various ferrous materials has been examined in a geothermal power station. Tests mere conducted in the atmosphere, cooling water, hot water and, in a test loop simulating the steam well. Increase amount of chromium is beneficial in hot water and under steam well conditions, giving little corrosion and/or erosion occur above 13%Cr. Weathering and other low alloy steels give better corrosion resistance in the atmosphere, whereas their use is of little advantage in the cooling water.