Question

Match the following types of iron with their use.

• A. Industrial purpose
• B. Sewage pipes
• C. Electromagnets

Answer 1

- Pig iron or cast iron has about 2.5-4% of C and other minor impurities of S, Si, P and Mn. It is widely used in making sewage pipes.
- Wrought iron contains about 0.12-0.25% of C. It is used to make chains, wires, electromagnets, etc.
- Hard steel is iron alloyed with different metals and contains about 0.5-1.25% of C. It is used for various industrial purposes.