What is a british pound coind made of?

A British pound coin is primarily made of two metals: the outer ring is composed of nickel-brass, which is a mixture of copper, zinc, and nickel, while the inner core is made of nickel-plated alloy, consisting of copper and nickel. This combination gives the coin its durability and distinctive appearance. The specific materials and design have evolved over time, especially with the introduction of the 12-sided pound coin in 2017.