Progress Courses Complete & Continue Next Lesson Learn More Chapter 1 - Types of Metal & Corrosion Removal Techniques 5 Lessons 1. Iron & Steel 2. Brass 3. Copper 4. Aluminum 5. Tin/Plated Metals Chapter 2 2 Lessons Lesson 1 Lesson 2 Courses Complete & Continue Next Lesson Learn More Chapter 1 - Types of Metal & Corrosion Removal Techniques 3. Copper