Copper Nickel Heat Exchanger Tubes

Copper Nickel condenser tubes suppliers, Cu-Ni 90/10 Heater Tube

Coiled Cuni heat exchanger Manufacturer, Copper Nickel U-Bend Tube exporter in India, check Cu-Ni 70/30 condenser tubes price in Mumbai

Copper Nickel Heat Exchanger Tubes

Copper Nickel Heat Exchanger Tubes

Copper Nickel condenser tubes

Copper Nickel condenser tubes

Copper Nickel U-Bend Tube

Copper Nickel U-Bend Tube

Sunflex Metal is state of the art and is constantly being updated and aligned to global industry standards to ensure we remain a world class manufacturer & supplier of Cu-Ni U-Bend Tube. Cupro nickel condenser tubes composition has copper as the base metal and it is copper that has the highest individual content in it, followed by nickel. So as to increase the strength of copper nickel, its castability, weldability, hardening and resistance to corrosion, other elements are added to it. Copper Nickel U-Bend Tube has an Elastic Modulus (C71500 annealed) of 22000 ksi (152 GPa). Cuni 90/10 Heat Exchanger Tube has a Shear Modulus (C71500 annealed) of 8300 ksi (57.2 GPa). Cu-Ni 90/10 Heater Tube has a Rockwell B Hardness of 69. Copper Nickel Heat Exchanger Tubes are invaluable in heat exchanger construction, power stations and in general industrial plants. 70/30 Cupro Nickel Heat Exchanger Tube has a Thermal Conductivity of 32.9 W/mK (0.0900 BTU in/hr.ft². °F). Copper nickel alloy heater tubing corrosion resistance is high to seawater, organic acids, alkalis, moisture, salt solutions and non-oxidising acids.

Coiled Cuni heat exchanger is also resistant to gases like hydrogen fluoride, oxygen, sulphur dioxide, chlorine, carbon dioxide and hydrogen chloride. The Yield Strength (annealed) of Copper Nickel condenser tubes is 15000 psi (103 MPa). It has a Tensile Strength (annealed) of 52000 psi (359 MPa) and it has a Tensile Strength (rolled-H04 for flat products/ hard drawn-H80 for tubing) of 78000 psi (538 MPa). Cu-Ni 90/10 condenser tubes has a Density of 0.323 lb/in³ (8.94 g/cm3). In spring-hardened condition, Cu-Ni 70/30 condenser tubes displays superb stress relaxation behavior. Is is also solderable and it shows good scaling resistance. Its has excellent cold and hot workability. Cupro Nickel Heat Exchanger Tubes have outstanding value in superheaters, cryogenic vessels, condenser tubes, heat exchanger tubes, etc.


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Copper Nickel Heat Exchanger Tubes specifications

Coiled Cuni heat exchanger

Coiled Cuni heat exchanger

Copper Nickel 90/10 fin tube

Copper Nickel Straight Heat Exchanger Tube

Copper Nickel Tube Coiling

Copper Nickel Tube Coiling

Copper Nickel Heater Tube

Copper Nickel Heater Tube

Specifications for C706 90/10 Copper-Nickel Heater Tubes

TubeASTM B111ASME SB-111MIL-T-15005

  • ASTM B543 : Welded Copper & Copper Alloy Heat Exchanger Tube
  • ASTM B111 : Copper & Copper Alloy Seamless Condenser Tubes & Ferrule Stock
  • ASTM B359 : Copper & Copper Alloy Seamless Condenser & Heat Exchanger Tubes with Integral Fins

Copper Nickel Standard

UNS C70600, C70620, C7060X, C71500, C71520, C71640, C70400, C71000, C72200, C72900, C71300


Soft annealed, special tempers on request

Out Diameter

1/4''-4 1/4''


0.4mm to 3.0mm


Ends capped, in shrinking-wrapped bag, then into cardboard box


1000 - 6000mm


within 30 days after receicing the deposit 




copper nickel heat exchanger tube are widely used in air conditioner, refrigeration,heat exchange, fire protection, liquefied petroleum gas, vent piping and so on.

Copper Nickel Heat Exchanger Tubes sizes

Sizes5/8 Inch (in), 3/4 Inch (in), 1 Inch (in),  Outer Diameter Copper-Nickel Condenser Tube
Nominal Chemicals70-30: Copper 69.5%, Nickel 30.0%, Iron 0.5%
90-10: Copper 88.6%, Nickel 10.0%, Iron 1.4%
Wall Thickness0.035 in
0.049 in
0.065 in
0.083 in

Outside Diameter 0.125 to 1.000 Inch
Wall Thickness 0.010 to 0.125 Inch
Coil Diameter Maximum 31" Coil O.D.
Minimum - CLR = 4 to 5 x O.D. based upon material and wall
Workpiece Type Coils
Straight Lengths
Tolerance ± .030"
Tighter tolerance available upon request
Production Rate 10 to 700 pieces/hour
Production Rate Variables OD, blank length, number of bends
Cleanliness No lubrication used for most applications

Copper Nickel Heat Exchanger Tubes price

Cupro Nickel Heat Exchanger Tubes Material GradePrice
CuNi 90/10 Heat Exchanger TubeUS $4.00-$4.50 / Meter
CuNi 70/30 Condenser tubesUS $10.00-$40.00 / Kilogram
66-30-2-2 Cu-Ni (Cunifer) Heat Exchanger TubeUS $5.00-$50.00 / Kilogram
95/5 CuNi Condenser tubesUS $12.31-$18.18 / Kilogram
80/20 CuNi Heat Exchanger TubeUS $10.00-$100.00 / Kilogram
Cu-Ni-Cr (Chromium Cupro Nickel Heater Tube)US $10-13 / Kilogram
Cu-Ni-Sn (Cupro Nickel Tin Alloy Heater Tube)US $15-25 / Kilogram
Cu-Ni-Al (Cupro Nickel Aluminum Alloy Heater Tube)US $9-10 / Kilogram
75-25 Cupro Nickel Heat Exchanger TubeUS $9.0-10.25 / Kilogram
55-45 Cupro Nickel Condenser tubesUS $9.0-10.25 / Kilogram


Above is an approx price, please contact for final price of Copper Nickel Heat Exchanger Tubes

Copper Nickel Heat Exchanger Tubes properties

Mechanical Properties for for C706 90/10 Copper-Nickel

O61All Sizes4015N/A
O61All Sizes4015N/A

ASTM B543 copper nickel heat exchanger tube

C7060090-10 copper nickel
C7150070-30 copper nickel

Physical Properties for C706 90/10 Copper-Nickel

Density @ 68o F0.323 lb/in3
Melting Range2010-2095o F
Hot FormabilityGood
Cold FormabilityExcellent
Machinability rating (C360 = 100)20
Gas-shielded arc weldingExcellent
Oxy-acetylene weldingNot recommended
Carbon-arc weldingNot recommended
Coated metal-arc weldingGood
Resistant welding: spot and seamGood
Resistance Welding: buttGood