Long-term prediction of metal corrosion losses in atmosphere using a power-linear function

• Long-term predictions of corrosion mass losses of metals in atmosphere are presented.
• Conditions for application of the power and power-linear functions are shown.
• The functions are estimated in comparison with the models in ISO CORRAG standard.

A technique for calculation of coefficients in the power-linear function for long-term prediction of corrosion losses of structural metals is presented. The formula consists of a power function at the initial corrosion stage and a linear function at the stationary stage. Conditions for application of the power and power-linear functions for long-term prediction of corrosion losses of technically important metals in various regions of the world are shown. A comparative estimate of predicted corrosion losses of metals based on the equations provided in this study and in ISO CORRAG 9224:2012(E) standard is given.