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Copper nickel tubes manufacturer in India

Copper nickel tube Specifications

What is a Copper Nickel Tube?

These tubes are known for superb corrosion resistance in marine and harsh conditions. A copper nickel tube comprises 70-90% copper with 30 or 10% nickel, with the former being sturdier and more resilient. These impact-resistant tubes don’t suffer from hydrogen embrittlement or cavitation, which ails many alternatives.

Copper nickel seamless tube supplier in Mumbai

What are the properties and applications of cupro nickel tubing?

The desirable properties of a cunifer tube include high thermal stability and strength at elevated temperatures. Its corrosion resistance, electrical conductivity, and antibacterial properties are well-admired. It makes a durable, recyclable piping solution that resists biofouling.

Cupro nickel tubing serves heat exchangers, power generation equipment, and firewater systems. Its role in marine industries is particularly appreciable, ranging from seawater cooling and boat hulls to valve components.


Specification of copper nickel tube

Specifications Size Wall Thickness
ASTM / ASME SB 111 / 151 / 466 1/2" - 6" OD 0.15mm - 1.50 mm
Schedule End Types
SCH20, SCh30, SCh20, SCH80, STD, XS, SCH60, SCH120, SCH80, SCH140, XXS, SCH160 Plain end, treaded, beveled end Seamless tube, welded tube, ERW tube, square tube

At our company, we are dedicated to offering top-notch copper nickel brake tubing to our clients. Don't forget to explore the advantages of our copper nickel heat exchanger tube as well

What are the advantages of using copper nickel for heat exchanger tubes?

The thermal properties of a copper nickel heat exchanger tube adapt conveniently to heat exchangers. It boasts a thermal conductivity of 50 (measured in W/mK), exhibiting stability at challenging temperatures.

Moreover, these pipes unfailingly retain mechanical strength and show a linear expansion coefficient of 17 – perfect for condensers and other heat-based roles.

Types of CU-NI tubes


Copper nickel seamless tubing

Copper nickel seamless tubing

Cunifer welded tube

Cunifer welded tube

Cuni ERW tube

Cuni ERW tube

Cupro nickel tubing

Cupro nickel tubing

Our cuni tube is thoroughly inspected and tested for leaks and defects before being shipped to our customers; learn more about the benifits of using copper nickel tubing

What are the benefits of using copper nickel tubing in HVAC systems?

HVAC systems (heating, ventilation, and air conditioning) frequently use a CuNi welded tube because of its high thermal conductivity. The material conducts heat well and cools effectively through dissipation.

Other benefits of this piping for HVAC systems are resistance to oxidation/corrosion and high durability. It extends the useful life of the air-conditioning units

Chemical composition of cunifer seamless tubing


Grade Mn Cu Pb Fe Ni Zn
90/10 1.0 max 88.6 min 0.5 max 1.8 max 9-11 max 1 max
70/30 1 max 65.0 min 0.5 max 0.4-1.0 29-33 1 max
Copper nickel alloy tube and CuNi Seamless Tubo are well-known for their superior corrosion resistance, making them ideal for use in harsh marine environments

How does the speciality of CuNi seamless tubes contribute to their resistance to pitting, crevice corrosion, and stress corrosion cracking?

The primary advantage of a cuni seamless tube is improved strength and fatigue resistance since it lacks joints or seams. It protects against general or localised corrosion. In chlorinated environments, it safeguards from SCC (stress-corrosion cracking).

Mechanical properties of CUNI welded tube


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
CuNi Welded Tube is well-known for its strength and durability - learn more about the key characteristics of CuNi tubing

What are the key factors contributing to the strength and durability of CuNi tubing?

The premium characteristics of copper nickel brake tubing derive from its chemical composition: high content of copper and nickel with iron and manganese. Its durability also comes from its antimicrobial and anti-biofouling properties.

Equivalent grade of cupro nickel ERW tube


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


Sizes of CU-NI tubes

Form Sizes
Metric US Customary
Copper Nickel Tubes 270 to 1600 mm OD, 2.0 to 10 mm wall thickness 10 to 63" OD, 0.1 to 0.5" wall thickness
Copper Nickel Condenser Tube 8 to 35 mm OD, 0.75 to 2.0 mm wall thickness 0.3 to 1.5" OD, 0.03 to 0.1" wall thickness
Copper Nickel Coiled Tube 6 to 22 mm OD, 0.5 to 3 mm wall thickness 0.25 to 1" OD, 0.02 to 0.12" wall thickness