The document introduces Electronic Corrosion Engineer 5.0 (ECE-5), a corrosion modelling software. ECE-5 has been updated from the previous ECE4 model based on field studies over the last 5 years. It provides tools to predict corrosion rates, evaluate corrosion risks, select corrosion-resistant alloys, and calculate life-cycle costs. New features include updated corrosion models, materials selection rules, improved graphing and reporting capabilities, and compatibility with Windows 7. The software is used by many oil and gas companies worldwide.