QUESTION THREE a) Describe the composition properties and uses of th e following metals; (4Marks) i) Cast iron ii) Wrought iron (4Marks) iii) Mild steel (5Marks)

i) Cast iron:<br />- Composition: Cast iron is an iron-carbon alloy with a carbon content typically ranging from 2% to 4.3%. It may also contain other elements such as silicon, manganese, and chromium.<br />- Properties: Cast iron is known for its excellent castability, high compressive strength, and good machinability. It has a high melting point and good thermal conductivity.<br />- Uses: Cast iron is commonly used in pipes, pipes fittings, automotive components, cookware, and building structures.<br /><br />ii) Wrought iron:<br />- Composition: Wrought iron is an iron-carbon alloy with a very low carbon content, typically less than 0.08%. It is also known for its low impurity content.<br />- Properties: Wrought iron is known for its ductility, malleability, and good tensile strength. It has a low melting point and good weldability.<br />- Uses: Wrought iron is commonly used in the production of steel, as well as in the manufacture of decorative items such as gates, railings, and furniture.<br /><br />iii) Mild steel:<br />- Composition: Mild steel is an iron-carbon alloy with a carbon content typically ranging from 0.05% to 0.3%. It may also contain small amounts of other elements such as manganese, chromium, and nickel.<br />- Properties: Mild steel is known for its ductility, malleability, and good tensile strength. It has a low melting point and good weldability. It is also relatively inexpensive compared to other types of steel.<br />- Uses: Mild steel is commonly used in the construction industry, automotive manufacturing, and the production of household appliances. It is also used in the manufacture of tools, machinery, and structural components.