Cupro Nickel 80/20 bars (also referred to as CuNi 80/20) are an alloy composed of 80% copper (Cu) and 20% nickel (Ni). They are known for their exceptional corrosion resistance, excellent thermal and electrical conductivity as well as outstanding mechanical properties, specifically resistance against seawater corrosion and biofouling, making this material well suited for marine use.

One of the key characteristics of Cupro Nickel 80/20 bars is their resistance to corrosion in marine environments, making them perfect for use in marine engineering projects, including ship hull design and desalination plants. Furthermore, their resistance to biofouling ensures minimal accumulation of marine organisms on surfaces thus decreasing maintenance requirements and increasing operational efficiencies.

Cupro Nickel 80-20 Bars

CuNi 80/20 bars stand out with their excellent thermal conductivity, making them highly suitable for heat exchanger applications that depend on efficient heat transfer. CuNi 80/20 bars can often be found being manufactured into heat exchanger components like tubes, shells and plates that serve petrochemical companies and power generation industries alike.

Cupro Nickel 80/20 bars boast exceptional electrical conductivity, making them highly valued components in electrical and electronics applications. Common applications for these bars are electrical connectors, circuit breakers and switchgear components where reliable conductivity is crucial to optimal performance and safety.

CuNi 80/20 bars boast excellent mechanical properties beyond corrosion resistance, thermal conductivity and electrical conductivity, their excellent ductility and tensile strength enable them to withstand mechanical stress without deforming irreparably; making them suitable for various structural applications, including pipe systems, heat exchanger frames and pressure vessels.

Apple Steels stands as one of the premier suppliers and manufacturers of Copper Nickel 80/20 Bars in Mumbai, India. We pride ourselves on offering top-tier quality products catering to diverse industrial requirements, our commitment to precision engineering ensures reliability and durability with each bar produced, our customer service aims at surpassing customer expectations, while our timely deliveries of quality solutions earn us trust nationwide.

Manufacturing Process Of Cupro Nickel 80-20 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 80-20 Rods

Standards : ASTM B151 / ASME SB151
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 80-20 Bars, Round Bars

Cupro Nickel 80-20 Round Bar

Round Bar

Cupro Nickel 80-20 Hex Bar

Hexagonal Bar

Cupro Nickel 80-20 Square Bar

Square Bar

Other Types Of Cupro Nickel 80-20 Rods

  • Cupro Nickel 80-20 Precision Round Bars
  • Cupro Nickel 80-20 Polished Bar
  • UNS C70600 Bright Round Bars
  • Cupro Nickel 80-20 Hot Rolled Bar
  • ASTM B151 Cupro Nickel 80-20 Forged Bar
  • UNS C70600 Round Bar
  • Cupro Nickel 80-20 Cold Drawn Bar
  • Cupro Nickel 80-20 Forged Bar
  • Cupro Nickel 80-20 Rectangular Bar

Chemical Composition of Cupro Nickel 80-20 Bars

ELEMENT PERCENT
NOMINAL MINIMUM MAXIMUM
Copper 74.0
Lead .05
Iron 1.0
Zinc 1.0
Nickel (including Cobalt) 21.0 19.0 23.0
Manganese 1.0

Mechanical Properties of Cupro Nickel 80-20 Bars

DESIGNATION TENSILE STRENGTH

YIELD STRENGTH
.2% Offset

%
ELONGATION
in 10 in.

STD FORMER KSI*
nominal
MPa**
nominal
KSI* MPa**
Annealed (A) 48 330 18 124 45
H01 Quarter Hard (1/4H) 55-62 380-495 65 448 7.5
H02 Half Hard (1/2H) 67-83 460-570 73 503 5.5
H04 Hard (H) 77-92 530-635 82 505 5
H08

Spring
up to .0253″ (.643mm)
.0253-.0625″ (1.588mm)

90 min
88 min
620 min
605 min
855 586 5
H14 Extra Spring .020 to .040 100-115 690-790 90 620 3

Cupro Nickel 80-20 Bars Technical Information

Cupro Nickel 80-20 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 80-20 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.