What you really know about Cu-Nickel Fittings?

by Dinesh

Posted on June 6, 2018 at 1:43 PM


Are you seeking for high-quality and best cu-ni forged fittings? Amardeep Steel Centre is the popular and leading manufacturer several groups of experts engage in various tasks. The usage of quality raw material produce the topnotch cu-ni forged fittings to encounter the buyer needs. The experienced industry offers comprehensive cu-ni forged fittings like cu-ni tee, cu-ni reducer, cu-ni pipe bends, cu-ni cross, cu-ni elbow, etc. The experts make sure the entire production of cu-ni forged pipe fittings delivered to those customers who need in the postulated period. The customers who want to buy take a look at the different features and specifications like thickness and dimensions. In addition to, the industry deliver under the client needs and widely utilized in different application industry. Many of them already stay connected with the experts to grab the best quality of cu-ni forged fittings.

Specifications of cu-ni forged fittings:

The grades are cupro nickel 90/10, copper nickel alloy UNS C70600, cupro nickel cu-ni 70/30 and UNS C71500. The available types are BSP, BSPT, Screwed SCRD, Socket Weld S/W and NPT. The standards are B171, B467, ASTM B122, B466 and range ½”NB to 24” NB I Sch 10s, 40s, 80s, 160s and xxs. The class includes 2000 LBS, 3000 LBS, 6000 LBS and 9000 LBS along with form cross, cap, barrel, swage nipple, boss, union, 45 deg elbow, tee, etc. The customers can make sure the equivalent grades, high pressure fittings chemical composition and mechanical properties. The copper and nickel adjacent obtain with periodic system one another with atomic numbers 28 and 29 as well atomic weights 63.54 and 68.71. However, the two elements closely related along with completely miscible in solid and liquid state. The lattice spacing may differ face-centre cubic solid solution linear with atomic concentration with values of copper and nickel.

The cu-ni alloys of copper and nickel usage with or without various elements, the zinc content not more 1%. While other elements included nickel is almost largest individual content next to the copper while it compared to other elements. The different copper alloys significant to distinguish between the formed alloys processed semi-finished cast alloys and products form castings produced through different casting processes. The ni 8.5 to 45% majorly commercial alloys includes manganese, tin and iron to enhance the specific properties. The cast alloys obtain the additions of silicon and niobium. The age-hardenable cu-ni silicon alloys 1.0 to 4.5% Ni; 0.2 to 0.6% not deal anymore. In the European standard, the alloys allotted to lower alloyed copper alloys. The alloys of two metals continuous series and solid solutions obtain face-centred cubic lattice copper nickel system exhibits full solubility in solid and liquid states.

Features and strength of cu-ni:

The equilibrium diagram is simple and melting points of components broaden to the alloys melting range and upper curve shapes that lower boundary liquid melt known as solidus. The liquid two phase region co-exists shaped between the solidus and liquidus. The nickel attain vital effort on both mechanical and physical properties of copper and nickel alloys when the tensile strength of 0.2% hot strength, liquidus, solidus and proof strength. The corrosion resistance gains with nickel content, electrical and thermal conductivity decrease. The elongation and tensile strength increases specifically with the nickel content and elongation keeps consistent which slightly decrease about 5% ni. The manganese added to the melt for the process of deoxidation and ties sulphur detrimental to harmless manganese sulphide develops the casting characteristics, gain strength and softening the temperature. The iron dissolved excellent in the solid solution gains the corrosion resistance of copper and nickel alloys. It also develops the adherent formation uniform secure the coating in the water and develops the corrosion resistance.

The iron solubility in the copper nick solution reduces lowered temperature and alloys preferably iron contents higher age-hardenable. The iron solubility is under the nickel content of the alloy improves the nickel content to attain maximum of nickel 30% and nickel content increases shows the iron hardness effect. The mechanical properties gained by iron and cold workability slightly worsened. The silicon increases the casting alloys castability and at the same perform deoxidant. In the copper nickel system, the silicon solubility improves the nickel content. The solubility limit may increase silicon content reduce ductility and increase the strength. The niobium develops the tensile strength as well proof strength when elongation reduces. The niobium favourable effect on the weldability cast alloys important and zinc major constituent of cu-ni-zi alloys dealt with special DKI and restricted to maximum of 1%.


The cu-ni alloys attain different applications in the following:

The characteristics of good processing semi fabrications and finished parts obtain in different forms, strengths and dimensions by cold and hot working and casting. In several cases, the eye-catching alloys light color includes ni more than 15%. The mechanical properties of both elevated and low temperatures and special physical properties keep higher electric resistivity and lower temperature coefficient. It gets wear resistance and excellent corrosion resistance. It attains corrosion fatigue and higher level security against stress corrosion.

The cu-ni alloy characteristics of fouling preventing and water atmosphere remains good resistance possible for cladding ships hull. The heat exchanger and power station and plant construction copper and nickel alloys are in the form of sheet contains crimped tube and finned tube, forged and extruded components with castings excellent materials for super heaters. Moreover, the cryogenic vessels for high pressure, steam boiler fittings and lower temperature, oil refineries for hot steam valves, heat exchanger tubes, plates and nuts. In the seawater desalination plant, the copper nickel alloys provided materials useful for evaporator tubes as well different parts in the form of water chambers with dimpled sheet. The chemical industry iron and manganese which standard and non-standard includes cu-ni alloys increasingly develop the acceptance needs tube, castings and alloy sheet in oil refineries for valves, covers, rings, gate valves, etc. The textile industry, printing works and paper mills avail the cu-ni alloys in the pipes, liquids, pipe fittings for pulps, vessels, etc.

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