Name the alloy used for making pressure cooker and its appropriate composition

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Solution

The alloy used in making a pressure cooker is Duralumin. Alloy is the combination of a metal with another metal or non-metal. For example, Steel is an alloy with a mixture of metallic element iron and non-metallic element carbon.
Composition:
Aluminium $(A l - 95 %$
Magnesium $(M g) - 0.4 % - 0.5 %$
Manganese $(M n) - 0.4 % - 0.5 %$
Copper $(C u) - 3.5 % - 4.5 %$
The alloy used for making pressure cooker is Duralumin with majorly composed of Aluminium and Copper. It has high tensile strength with the characteristics of lightness of $Al$ . Due to its high strength after heat treatment, it can be used in making pressure cookers and also in automobile and aircraft components.

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