Copper-nickel alloy (German silver, white copper, nickel silver), also known as nickel silver alloys, nickel as the main element is copper-nickel-zinc alloy, silver-white color, with the appearance of silver, but not containing silver elements, the ingredients of the general 60% copper, 20% nickel and 20% zinc. Nickel content of about 10% to 30%. Higher nickel content of the alloy is called constantan. Cupronickel first produced in Yunnan ancient Church Lang County. Later in Central Asia have used their big summer coin money, is considered China and Bactria exchange product. Since copper-nickel alloy high strength and plasticity of hard, corrosion resistance is better, higher resistivity, does not rust and other properties, mainly for decorations, water supply equipment, instruments and currency instruments manufacturing. Copper-nickel alloy is a copper plus nickel can significantly improve strength, corrosion resistance, hardness, resistance and thermal resistance, and reduce the temperature coefficient of resistivity. Therefore, compared with other copper alloys nickel alloy mechanical properties, physical properties were unusually good, good ductility, high hardness, color and appearance, corrosion resistance, full of deep drawing properties, is widely used in shipbuilding, petrochemical, electrical, instrumentation, medical equipment, daily necessities, handicrafts and other fields, and is also an important resistance and thermocouple alloys. Cupronickel drawback is the main element: Nickel strategic materials are scarce, the price is more expensive. Nickel-copper-nickel alloy (there called Nickel Silver), use: crystal oscillating element shell, crystal shell, potentiometers slide film, medical machinery, building materials and so on. Shanghai Tian Rui Metal Materials Co., Ltd. (according to user needs, can be produced by drawing process) Marketing Department Miss Li T :021-63066307/56062869 F :021-56060561 QQ: 441594627/1650507469 Address: Lingshi Road, Zhabei District, Shanghai, No. 891 Email: coco_trcopper@163.com Website: www.tr-copper.com lwtrjs20130614

keywords: Copper-nickel alloy, constantan, copper-nickel alloy belt, and white copper,