Long-term forecast of corrosion mass losses of technically important metals in various world regions using a power function

• Long-term forecasts of corrosion mass losses of metals in atmosphere are presented.
• Three models for the long-term forecast are given.
• The forecasts are given for test locations within the ISO CORRAG program.
• A comparative estimate of the forecasts is given.

An analysis of the results of corrosion tests on flat and helix specimens made of technically important metals carried out within the ISO CORRAG program is given. Stochastic relationships between coefficient n in the power function, which characterizes the protective properties of the corrosion products, and the limiting corrosion rate α, with the corrosivity of each type of atmosphere were found. A forecast of corrosion losses for a period of up to 50 years was given using the linear function in the stationary stage, a power function, and limiting corrosion rate values α. The reliability of the forecasts was estimated.