This paper presents an interpretation of corrosion loss data for mild steel coupons exposed for up to 2.6 years to freshwater under a range of dissolved oxygen levels and temperatures 50-60°C. The water total alkalinity was 0.5-0.6 mmol/L and pH 8.7-9.2. It is shown herein that the data is consistent with the early stages of the corrosion loss model proposed earlier for steel exposed to seawater, brackish water or freshwaters in the usual environmental range of 0-30°C. The new data was found to be consistent with the effect of dissolved oxygen and the effect of water hardness on the model.
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