{"id":10953,"date":"2020-07-02T10:41:27","date_gmt":"2020-07-02T08:41:27","guid":{"rendered":"https:\/\/www.steelavailable.com\/?p=10953"},"modified":"2020-07-17T08:54:05","modified_gmt":"2020-07-17T06:54:05","slug":"copper-nickel-alloys-properties-and-applications","status":"publish","type":"post","link":"https:\/\/www.steelavailable.com\/it\/copper-nickel-alloys-properties-and-applications\/","title":{"rendered":"Copper nickel alloys: properties, processing and main applications"},"content":{"rendered":"

Ci spiace, ma questo articolo \u00e8 disponibile soltanto in English<\/a> e \ud55c\uad6d\uc5b4<\/a>.<\/p>

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What is the Cupronickel?<\/span><\/h3>\n

CuNi is an alloy made of Copper and Nickel with less than 0.5% of other alloys. It is also known as cupronickel. There are two popular combinations of CuNi; 70% Copper\/30% Nickel or 90% Copper\/10% Nickel. 90\/10 is most used on marine, offshore oil and gas platform while 70\/30 is more commonly used in Navy since it has much more anti-corrosion ability and expensive. These percentages can vary from 69% to 96% of Copper and rest in Nickel but 70\/30 and 90\/10 are the most common combinations.<\/span><\/p>\n

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Properties of CuNi:<\/span><\/h3>\n

As it contains mostly copper and nickel, it combines the advantages of these two alloys. Copper enjoys low reactivity, excellent heat and electrical conductivity, great corrosion resistance, and machinability. On the other hand, nickel has got high strength and toughness, and excellent corrosion resistance. Beside these properties, CuNi is also non-bacterial, non-magnetic, light weight, and spark and pitting resistance. The corrosion resistance especially of the 90\/10 alloy is due to a protective surface film that forms when the alloy comes into contact with water and seawater. The alloy is also resistant to corrosion that occurs through chemical and electrochemical processes. Therefore, copper\u2019s low reactivity leads to less chemical\/electrochemical processes.<\/span><\/p>\n

Main Applications:<\/span><\/h3>\n

With these various advantages compared to other alloys, CuNi is well found in shipbuilding and marine hardware. For example, guidelines for seawater system design and operation, offshore oil and gas, power generation, ship repair, and marine antimicrobial applications. Also, since CuNi is easy to fabricate, CuNi can be applied to many designs.<\/span><\/p>\n

Design:<\/span><\/p>\n

Listed products are the products that can be produced with CuNi other than pipes:<\/span><\/p>\n