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Copper Nickel

Copper nickel

What is Copper nickel?

Reputed for excellent corrosion resistance in marine conditions, this material gets widely used in electronics, power plants, and shipping. Copper nickel can contain up to 70% or 90% copper with iron and manganese.

Cunifer operates in heat exchangers, condensers, desalination plants, and aircraft and automobile components. It is also indispensable in seawater cooling and firewater applications.


Most Trusted Cupro Nickel 90/10 Product Supplier in Mumbai, India

Copper Nickel Specifications



What are the properties of copper nickel alloys? How do they differ from other copper alloys?

These alloys are strong, non-bacterial, and fatigue resistant. the tensile strength of a 70-30 Cu Ni alloy can be as high as 517 MPa. the metallurgical properties of cupronickel are not lost even at elevated or cryogenic temperatures.

Desirable thermal conductivity and expansion rate make these alloys ideal for electrical and electronic applications like light current switches. another favorable characteristic is top-notch ductility after annealing, making them easy to work with.

The resistance of nickel–copper alloys to aqueous corrosion (even in speedy flow) is the best among all copper alloys. however, a copper and nickel mix is not as hardy as other combinations like beryllium-copper. alloying nickel and silver with copper shows improved resistance to tarnishing and stress-corrosion cracking.

Cuni 90/10 Products Delivery Schedules


Country Name Canada USA Mexico Costa Rica Panama Denmark
Delivery Time 60-70 days 45-60 days 30-40 days 50 40 40-50

Top Quality Cuni 70/30 Long Products Manufacturer in Different Sizes at Lowest Price

Cupro Nickel Material Price List


Material Price In INR Price In USD
Copper Nickel 70/30 ₹ 1300 - Per kg $ 16.25 - Per kg
Copper Nickel 90/10 ₹ 1100 - Per kg $ 13.75 - Per kg

How does the anti-fouling property of Copper nickel alloys compare to other materials commonly used in marine environments? Which factors influence their effectiveness?

Biofouling, or the accumulation of marine organisms on marine components, poses performance problems. A cupro nickel alloy displays commendably low rates of macrofouling. the release of copper ions controls the biofouling resistance since these ions are hostile to marine organisms.

Zinc and silver also get used to prevent biofouling. the former primarily targets algae, while silver makes the microbial cells more permeable. but what makes a copper nickel alloy superior is how the adherent cuprous oxide layer offers sustainable, long-term protection.

This property of Cuni can get impacted by the temperature and salinity. light and turbidity also play a pivotal role, as do invasion or competition by other species like barnacles. ongoing research focuses on environment-friendly, toxin-free alternatives, like natural materials isolated from algae.

Check CDA 706 Forged and Rolled Products Chemical Composition Before Buying the Material

Cuni Long Products Chemical Compositions




Refer C71500 Copper Nickel Flat Product Equivalent Grades and Mechanical Properties

Cupro Nickel Alloy Equivalent Properties


Grade Werkstoff Nr. UNS
Russia North America
70/30 2.0882 C71500
90/10 2.0872 C70600

Cuni Forged Products Mechanical Properties


Grade Melting point Density Tensilestrength Elongation Yieldstrength(0.2%Offset)
90/10 2260°F 8.8g/cm3 50000 PSi 30% 20000PSi
70/30 2260°F 0.323 lb/in3 at 68°F 50000 PSi 30% 20000PSi
Find Cuni Products Electric Resistivity Chart, Also Compare 90/10 vs 70/30 Material

Electric Resistivity of Cuni Alloys


Alloy identification Electrical resistivity in Ω·mm2/m (20 °C) Electrical resistivity in Ω·mm2/m (200 °C) Electrical resistivity in Ω·mm2/m (100 °C) Electrical resistivity in Ω·mm2/m (300 °C) Electrical resistivity in Ω·mm2/m (500 °C) Electrical resistivity in Ω·mm2/m (400 °C)
CuNi10 0.15 0.162 0.156 0.169 - 0.175
CuNi6 0.1 0.114 0.107 0.123 - -
CuNi23-Mn 0.3 0.315 0.308 0.323 0.339 0.331
CuNi44 0.49 0.49 0.49 0.49 0.49 0.49
CuNi2 0.05 0.064 0.057 - - -
CuNi30-Mn 0.4 0.41 0.404 0.417 0.432 0.424

Copper Nickel 90/10 VS 70/30 Material


Property Copper-Nickel 70/30 Copper-Nickel 90/10
Composition 70% Copper, 30% Nickel 90% Copper, 10% Nickel
Corrosion Resistance Very Good to Excellent Excellent
Thermal Conductivity High High
Strength Moderate to High Moderate to High
Ductility Good Good
Fabrication Easily Fabricated Easily Fabricated
Weldability Good Excellent

Material testing of Cupro Nickel 70/30 Products

  • Visual inspection
  • Raw material testing
  • Radiographic testing
  • Ultrasonic testing
  • Magnetic particle testing
  • Eddy current testing
  • Penetrant testing