High temperature acid corrosion rate correlation

The correlation below is based on lab experiments and some field data demonstrated. The chart is also applicable to other acidic corrosion above about 150 oC, 300 oF. Please contact Ion Science for further technical information.

To use the charts, look up the flux-thickness on the horizontal axis, then the temperature on the vertical axis (top, oF, bottom, oC). The estimated corrosion rate is shown. Corrosion rates for 5 Cr steel are expected to be approximately double those indicated by the chart.

1              J.M.O’Kane, T.F.Rudd, D.Cooke, F.W.H.Dean, S.J.Powell, , ‘Detection and monitoring of naphthenic acid corrosion in a visbreaker unit using hydrogen flux measurements’, Corrosion 2010, Paper 10351, Conf. series, NACE, Houston, 2010.

2              J.M.O’Kane, T.F.Rudd, J.H.Harrison, S.J.Powell, F.W.H.Dean, ‘Correlation of hydrogen flux and corrosion rate measurements carried out in a severe episode of corrosion-erosion attributable to naphthenic acid’, Corrosion 2010, Paper 10178, Conf. series, NACE, Houston, 2010.