This section discusses non ferrous metals, which unlike ferrous metals do not contain iron. It likely covers the properties and common uses of metals such as aluminum, copper, zinc, tin, and lead. The key details provided help introduce students to important non-iron containing metals used in manufacturing and construction.

1. UNIT 4:
METALS

2. 1. Introduction
2. Ferrous metals
3. Non ferrous metals
4. Metals in the workshop
5. Metals in industry

3. 3. Non ferrous metals