Metal spraying, also known as thermal spraying, is a surface coating or engineering process where a layer of one metal is sprayed onto another in a molten state. It is often used to provide corrosion protection to ferrous metals, improve wear resistance or to improve thermal conductivity. It offers a cost effective way to repair damaged parts, at a low heat to prevent distortion. It can be applied to aluminium, bronze, copper, steel & stainless steel.