There are apparently conflicting observations about the influence of seawater temperature on the immersion corrosion of copper-nickel alloys, with both increases and decreases in temperature having been observed. During the 1980s, ASTM sponsored a worldwide corrosion study, which included 90:10 copper-nickel (UNS C070600). At first sight there is no order in the results regarding the effect of seawater temperature. However, when the results are examined in detail, allowing for water velocity and environmental conditions and carefully considering the implications of previous laboratory and field studies, some order can be obtained. This shows that a relationship between corrosion and temperature in the range of 10°C to 40°C can be proposed, which is consistent with previous observations.
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