Zinc coated iron is known as:

Concept:

In sheet metal work, different types of metal sheets are used.

• Black iron sheets: The cheapest sheet metal is black iron, which is rolled to the desired thickness. The sheets are rolled into two conditions. When it is rolled in a cold state, it is called cold-rolled and when it is rolled in a hot state, it is called hot rolled. Hot-rolled sheets have a bluish-black appearance and are often referred to as uncoated sheets since they are uncoated. They corrode rapidly. Cold-rolled sheets have a plain silver-whitish appearance and are uncoated.
• Galvanised iron sheets: Zinc-coated iron is known as 'galvanized iron. This soft iron sheet is popularly known as a G.I sheet. The zinc coating resists corrosion and improves the appearance of the metal and permits it to be soldered with greater ease.
• Stainless sheets: This is an alloy of steel with nickel, chromium, and other metals. It has good corrosive resistance and can be welded easily.
• Copper sheets: Copper sheets are available either as cold rolled or hot rolled. They have very good resistance to corrosion and can be worked easily.
• Aluminium sheets: Aluminium cannot be used in its pure form, but is mixed with a very small amount of copper, silicon, manganese, and iron. Aluminium sheets are whitish in color and light in weight. They are highly resistant to corrosion and abrasion.
• Tinned plate: Tinned plate is sheet iron coated with tin, to protect it against rust. This is used for nearly all solder work, as it is the easiest metal to join by soldering.
• Lead sheets: Lead is very soft and heavy in weight. Lead sheets are used for making the highly corrosive acid tanks