Cupronickel

NUFIT PIPING SOLUTIONS maintains a broad inventory of Copper Nickel C70600 (90/10) and C71500 (70/30) in forms of Pipes, Tubes, Pipe Fittings, Flanges, Sheets, Plates, Flats, Rod, Wires, Fasteners, etc

Grade: UNS C70600 (90/10) and UNS C71500 (70/30)

Size:

Pipe: 1/2" to 12"

Fittings:  1/2" to 12"

Flanges: 1/2" to 24"

Sheets / Plates: 0.5 mm to 50 mm Thk

Wire: 0.5 mm to 6 mm DIA

Rod: 1 mm to 120 mm DIA

Fasteners: M2 to M100 Upto 3 Meters Long

Cupronickel (also referred to as "cupernickel" or copper-nickel alloy) refers to a group of copper-nickel alloys that are used in saltwater environments due to their corrosion resistant properties.

The most common cupronickel alloys are:

·         90/10 Cupro-nickel (copper-nickel-iron)

·         70/30 Cupro-nickel (copper-nickel-iron)

These alloys have good working properties, are readily weldable and considered insensitive to stress corrosion. Cupronickel is also resistant to biofouling, crevice corrosion, stress corrosion cracking and hydrogen embrittlement.

Slight differences in corrosion resistance and strength generally determine which alloy grade is used for a particular application

Corrosion Resistance:
Cupronickel resists corrosion in seawater because its electrode potential is essentially neutral in such environments. Consequently, it will not form electrolytic cells when placed in close proximity to other metals within an electrolyte, which is the main cause of galvanic corrosion.

Copper also naturally forms a protective oxide layer on its surface when exposed to seawater, which protects the metal from deterioration.

Applications:

Cupronickel is used in:

·         Tubes for light-duty condensors, feedwater heaters and evaporators used in power stations and desalination plants.

·         Pipes carrying seawater to fire mains, cooling water systems and ship sanitary systems.

·         Sheathing for wooden piles.

·         Underwater fencing.

·         Cabled tubes for hydraulic and pneumatic lines.

·         Fasteners, crankshafts, hulls and other marine hardware used in boats.

·         Silver-colored circulation coins.

·         Silver-plated cutlery.

·         Medical equipment.

·         Automobile parts.

·         Jewelry.

·         Cylinder cores in high-quality locks.

Standard Cupronickel Compositions (Wt. %)

Cupronickel Alloy	Alloy UNS No.	Copper	Nickel	Iron	Manganese
90/10 Cupronickel	C70600	Balance	9.0-11.0	1.0-2.0	0.3-1.0
70/30 Cupronickel	C71500	Balance	29.0-32.0	0.5-1.5	0.4-1.0

We export - China, Netherlands, Germany, Korea, Spain, France, Italy, Germany, UAE, Dubai, Kuwait, Egypt, Qatar, Iran, Saudi Arabia, Turkey, Oman, Nigeria, Colombia, Singapore, Malaysia, Thailand, United States, Argentina, Canada, Australia, Sri Lanka, London, Africa Etc.