Why stainless steel cookware have a layer of copper and aluminium on the bottom?

Stainless steel cookware is often clad with a layer of copper or aluminium on the bottom. This is because these metals have high thermal conductivity, which means that they can transfer heat quickly and evenly. This makes stainless steel cookware more efficient at cooking food, and it can also help to prevent hot spots that can cause food to burn.

Copper is a particularly good conductor of heat, but it is also a relatively expensive metal. Aluminium is less expensive and conducts heat almost as well as copper. As a result, aluminium is the more common choice for cladding stainless steel cookware.

The process of cladding stainless steel with copper or aluminium is called metallurgy bonding. This process involves bonding the two metals together at a high temperature, which creates a permanent bond. The clad metal is then rolled out into sheets, which can be used to make cookware.

Cookware that is clad with copper or aluminium is typically more expensive than cookware that is made entirely of stainless steel. However, the benefits of clad cookware, such as its improved heat conductivity and durability, make it a worthwhile investment for many home cooks.

Here are some additional benefits of clad cookware:

* Durability: Clad cookware is more durable than cookware that is made entirely of stainless steel. This is because the copper or aluminium cladding helps to protect the stainless steel from corrosion and wear.

* Ease of cleaning: Clad cookware is easy to clean, as the copper or aluminium cladding does not react with food.

* Aesthetics: Clad cookware often has a more attractive appearance than cookware that is made entirely of stainless steel.

If you are looking for cookware that is efficient, durable, and easy to clean, then clad cookware is a great option.