Brass / Copper Flat is known best for its high tensile strength and corrosion resistance properties, making them withstand extreme environments and temperature. Moreover, to sustain the quality, they are wrapped in a plastic wrapper and then in wooden cases.Copper flat bars are widely used in the conduction and electricity industry. Copper has the highest electrical conductivity of all common metals on Earth. This property, combined with its strength, ductility and corrosion resistance, makes it unique in utility as a conductor of electricity.