Erosion-corrosion is a common cause of tube failure in copper alloy condenser tubes, particularly in salt water applications. Many of the traditionally used alloys have a maximum bulk flow velocity specified, above which accelerated attack may be anticipated.(1) This velocity is not only a function of alloy composition, but also depends on the nature and composition of the cooling water. For example, salt water silting or polluted water normally results in much lower velocity tolerance than the less aggressive fresh waters. The phenomenon of erosion-corrosion is fairly well understood.(2,3)

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