Cupronickel

Cupronickel

Cupronickel is a type of alloy made up of 69% copper and 30% nickel. It is often used as an alternative for offshore applications due to its excellent resistance to erosion-corrosion, pitting attack, ammonia contamination, and suspended solids. Cupronickel alloys are known for their exceptional corrosion resistance and are commonly used in sea water desalination.From: Ocean Structures [2019], Corrosion and Materials in the Oil and Gas Industries [2019], Investigating the effect of GTAW parameters on the porosity formation of C70600 copper-nickel alloy [2023], Wastewater Treatment [2020]

Organics, Salts, Metals, and Nutrient Removal

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Purchase Book

Published in David H.F. Liu, Béla G. Lipták, Wastewater Treatment, 2020

R. David Holbrook, Sun-Nan Hong, Derk T.A. Huibers, Francis X. McGarvey, Chakra J. Santhanam

Due to temperature increases, inorganic salts come out of solution and precipitate on the inside walls of pipes and equipment. Scales due to calcium carbonate, calcium sulfate, and magnesium hydroxide are the most important in desalination processes. Controlling the pH minimizes carbonate and hydroxide scales. Most inorganic solutions are corrosive. Cupronickel alloys are most commonly used in sea water desalination. Other metals used are aluminum, titanium, and monel.

Investigating the effect of GTAW parameters on the porosity formation of C70600 copper-nickel alloy

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Journal Information

Published in Canadian Metallurgical Quarterly, 2023

Hossein Bayat Tork, Mehdi Malekan

Alloying copper with different amounts of nickel improves the mechanical strength [7,8], corrosion [9] and pitting resistance [10,11]. Cupronickel alloys have drawn much attention owing to their excellent corrosion resistance. Since they can be easily welded and assembled, they are considered a suitable choice for piping systems, heat exchangers, hulls, and other marine applications. These alloys are also highly resistant to corrosion in seawater and have anti-fouling properties with good resistance to biofouling [12–14]. Therefore, the use of cupronickel alloys for firefighting applications is growing in refineries due to these features. Joining and welding is an essential component of manufacturing technology [15]. The various types of gas tungsten arc welding (GTAW) processes are used to produce high quality welds and are one of the most popular technologies for copper alloys welding in manufacturing industries [16–19].

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Investigating the effect of GTAW parameters on the porosity formation of C70600 copper-nickel alloy