for determination of the environmental severity comes from over
one hundred references used in Socrates development as well as significant
lab and field data available to InterCorr through its own testing
programs as well as the group of companies that were sponsors of
the development effort.
Socrates also determines the system pH based on acid gas partial
pressures, buffering (bicarbonate ion concentration) and temperature.
The pH is dynamically displayed on the Screen as the user inputs
generates a required pitting index (RPI) based on environmental
severity and maximum operating temperature. The materials displayed
in the solution window are such that only materials that have a
pitting index higher than the computed RPI are displayed. Pitting
Index for materials in Socrates is computed using the relationship
= Cr + 3.3 Mo + 11 N + 1.5 (W + Cb)
The figure below
shows the selected materials within a specific class displayed by
double clicking on any materials folder.