Final answer:
Brass, an alloy made of copper and zinc, is not a common guttering material, unlike plastic, aluminum, steel, and copper. Brass is often used in musical instruments, whereas the other materials are favored for their durability and suitability for handling rainwater in gutters.
Step-by-step explanation:
The material that is not typically used for guttering from the list provided is brass. Guttering materials usually include plastic, copper, aluminum, and steel, which are all durable and suitable for handling rainwater. Brass, however, is an alloy primarily used in musical instruments due to its acoustic properties and is not commonly employed for guttering systems.
Brass is made up of copper and zinc. Steel, including stainless steel, is widely used in construction because of its strength and durability. Aluminum alloys are favored for their durability, resistance to corrosion, and good conductivity. A substitutional alloy is an alloy where the elements are substitutable within the same crystal structure without changing the overall balance of the solid solution.