Copper is soft and malleable metal is called ,,red metal’’ due to its characteristic red-orange color. It is characterized by excellent thermal and electrical conductivity.
Brass is mostly an alloy of copper and zinc. Every so often it consists of other metals such as lead, aluminium, tin, silicon, chromium, manganese and iron.
Aluminium (aluminium) - non ferrous metal, lightweight, malleable and with silver-gray color. It is characterized by resistance to corrosion and very high thermal and electrical conductivity.
The group of steels of special physical - chemical properties, resistant to corrosion caused by water, atmospheric factors, diluted acids, alkaline solutions.