Cupro Nickel 70/30 bars are alloy bars composed primarily of copper (Cu) and nickel (Ni), with a ratio of 70% copper and 30% nickel. This alloy is renowned for its exceptional resistance to corrosion in seawater and various other harsh environments, making it highly sought after in marine and offshore applications. The inclusion of nickel in the alloy enhances its strength and resistance to corrosion, while copper ensures excellent thermal and electrical conductivity. This combination of properties makes Cupro Nickel 70/30 bars suitable for a wide range of applications across various industries.

One of the notable features of Cupro Nickel 70/30 bars is their outstanding resistance to corrosion, particularly in marine environments. This corrosion resistance is essential for components exposed to seawater, such as ship hulls, offshore platforms, and heat exchangers used in desalination plants. The alloy's ability to withstand corrosion also makes it ideal for use in piping systems, valves, and fittings in marine infrastructure.

Cupro Nickel 70-30 Bars

Additionally, Copper Nickel 70/30 bars exhibit excellent mechanical properties, including high tensile strength and good ductility. This combination of strength and ductility allows for the fabrication of durable components that can withstand the rigors of marine environments, such as propeller shafts, fasteners, and pump components.

Another significant feature of Cu-Ni 70/30 bars is their resistance to biofouling, the accumulation of marine organisms on submerged surfaces. This resistance helps maintain the efficiency and performance of equipment and structures in seawater, reducing maintenance requirements and prolonging service life.

In addition to marine applications, Cupro Nickel 70/30 bars find use in various other industries, including chemical processing, oil and gas, and power generation. In chemical processing plants, the alloy is employed in piping systems, heat exchangers, and reactors due to its resistance to corrosive chemicals. In the oil and gas industry, Cupro Nickel 70/30 bars are utilized in offshore pipelines, subsea equipment, and oil platforms, where corrosion resistance is critical. Furthermore, in power generation facilities, particularly nuclear power plants, the alloy is favored for its resistance to corrosion in cooling systems and heat exchangers.

Apple Steels is a premier manufacturer and supplier based in Mumbai, India, specializes in Copper Nickel 70/30 Bars. Renowned for exceptional quality and reliability, we cater to diverse industrial needs with precision-engineered products. Our state-of-the-art facilities ensure superior craftsmanship and strict adherence to international standards. With a commitment to excellence, we deliver copper nickel bars renowned for corrosion resistance, durability, and thermal stability. Trusted by clients worldwide, our products serve critical applications in the marine, chemical, and power industries.

Manufacturing Process Of Cupro Nickel 70-30 Bars

Casting

Melting and Casting

Steel and alloying metals are loaded into an electric arc furnace. Once in the furnace, the metal is heated to a specific temperature above its melting point, usually in excess of 2800°F.

Forming Round Bar

Forming

Most cast steel is formed by hot rolling—the slab, bloom, or billet is heated and passed through large rollers, stretching out the steel into a longer, thinner form.

Heat Treatment

Heat treatment

Heat treatment strengthens rolled Cupro Nickel by recrystallizing the deformed microstructure. Most Cupro Nickel is heat treated by annealing.

Descaling

Descaling

A rolled piece of Cupro Nickel acquires a layer of oxidized “mill scale,” which needs to be washed away to restore a shiny surface finish.

Cutting Round Bar

Cutting or Machining

Cupro Nickel is cut to a specified shape and size. The Cupro Nickel can be sheared with circular knives, sawed with high-speed blades, or blanked with punches.

Specification Of Cupro Nickel 70-30 Rods

Standards : ASTM B111 / ASME SB111
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
Wire : Thickness starting from 0.05mm
Round bar size : Diameter: 3-~800mm
Hex Bar size : 2-100mm A/F
Flat bar size : Thickness: 2 -100mm / Width: 10 to 500mm
Square bar size : 4 to 100mm
Rectangular Bars Size : 33 x 30mm to 295 x 1066mm
Hollow Bar : 32mm OD x 16mm ID to 250mm OD x 200mm ID
Tolerance : H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Finish : Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish

Types Of Cupro Nickel 70-30 Bars, Round Bars

Cupro Nickel 70-30 Round Bar

Round Bar

Cupro Nickel 70-30 Hex Bar

Hexagonal Bar

Cupro Nickel 70-30 Square Bar

Square Bar

Other Types Of Cupro Nickel 70-30 Rods

  • Cupro Nickel 70-30 Precision Round Bars
  • Cupro Nickel 70-30 Polished Bar
  • UNS C71500 Bright Round Bars
  • Cupro Nickel 70-30 Hot Rolled Bar
  • ASTM B111 Cupro Nickel 70-30 Forged Bar
  • UNS C71500 Round Bar
  • Cupro Nickel 70-30 Cold Drawn Bar
  • Cupro Nickel 70-30 Forged Bar
  • Cupro Nickel 70-30 Rectangular Bar

Cupro Nickel 70-30 Bars Equivalent Grades

STANDARD UNS WNR. EN AFNOR
Cupro Nickel 70/30 C71500 2.0882 NiCr20CuMo Z2NCUD31-20AZ

Chemical Composition of Cupro Nickel 70-30 Bars

Grade Cu Mn Pb Ni Fe Zn
Cupro Nickel 70/30 65 min 1.0 max 0.05 max 29-33 max 0.4-1.0 max 1 max

Mechanical Properties of Cupro Nickel 70-30 Bars

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
0.323 lb/in3 at 68 F 2260 F 50000 psi 70 / 3000 psi 30 %

Cupro Nickel 70-30 Bars Technical Information

Cupro Nickel 70-30 Rods Industrial Application

Electrical Industry

Automotive Industry

Construction Industry

Defence Industry

Pharmaceutical Industry

Petroleum Industry

Petrochemical Industry

Milk & Dairy Industry

Export & Supply Destination of Cupro Nickel 70-30 Bars

Austria, Azerbaijan, Belarus, Belgium, Bulgaria, Croatia, Cyprus, Czechia/Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Netherlands, Norway, Poland, Portugal, Romania, Russia, Serbia, Slovakia, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom.

Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, British, China, Egypt, Hong Kong, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kuwait, Kyrgyzstan, Lebanon, Macau, Malaysia, Maldives, Mongolia, Myanmar, Nepal, North Korea, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Taiwan, Thailand, Turkey, United Arab Emirates, Vietnam.

Algeria, Angola, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Egypt, Eswatini, Ethiopia, Gambia, Kenya, Liberia, Libya, Madagascar, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Niger, Nigeria, Rwanda, Senegal, Seychelles, South Africa, Tanzania, Tunisia, Uganda, Zambia, Zimbabwe.

Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, United States of America, Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.