Copper-nickel is copper, nickel as the main component of the resistance alloy. Since copper and nickel may form a continuous solid solution organization, alloy resistivity, temperature coefficient of resistance, hardness, strength, copper thermal emf, with the change in the amount of nickel is changed. These alloys due to the large copper thermal emf, not usually as standard resistors and DC shunts using measurement instruments. However, in exchange for using precision resistors, slide resistance, starters, adjust rheostat and resistance strain gauges and other aspects have been widely used. Meanwhile, because these alloys have a high resistivity and excellent heat resistance, workability, weldability, and can be widely used for heating in the field.