AQA GCSE Design and Technology · 8552
Paper 1
Revise: Metals and alloysAn alloy is a mixture of two or more elements, at least one of which is a metal. Alloying changes a material’s properties to make it more useful. For example, brass combines copper and zinc, while steels contain iron and carbon.
- Revise: Material properties
- Revise: Selection criteria for prototypes
A mixture of a metal with one or more other elements, made to obtain useful properties.