E-mail us
Table of Content
Copper nickel pipe, also called cupro nickel pipe is a tough and corrosion-resistant alloy used in industries that need strong, reliable piping. It's manufactured from a mix of copper and nickel, frequently with other elements like iron and manganese for increased strength. Preston Pipes & Alloys, a trusted name in metal supply, offers a wide range of copper-nickel pipes in grades like 90/10 and 70/30. These grades provide excellent mechanical strength and stability in a high-temperature environment. Pipes made from alloys such as C70600 (90/10) and C71500 (70/30), offer great resistance to seawater and brine making them appropriate for marine situations. As leading copper nickel pipe suppliers, we focus on quality, precision, and long-term performance.
Cupro nickel pipes are known for their anti-corrosive nature, good weldability, and resistance to biofouling. These pipes perform well in both hot and cold temperatures, with low risk of scaling or cracking. It is perfect for heat exchangers, condensers, shipbuilding, offshore oil platforms, and desalination plants. Cuni pipe's strength makes it appropriate for power generation systems where thermal stability is crucial, as well as hydraulic lines in naval ships. Cupro nickel alloy pipe also helps reduce maintenance in piping systems exposed to saltwater, steam or chemicals.
Copper nickel pipes come in different forms, like seamless, welded and fabricated, based on your project needs. Sizes usually range from ½ inch to 24 inches in outer diameter, and they follow standards like, ASTM B466 C70600 and B466 UNS C70600. To maintain uniformity and structural strength, the majority of pipes are manufactured utilizing hot or cold drawing. 90/10 cuni pipe and 70/30 copper nickel pipe are both popular for providing consistent flow, and pressure stability in demanding applications. Their consistent wall thickness, smooth bore and strong construction help extend service life even in aggressive environments.
Before delivery, every copper nickel pipe goes through a full set of quality checks. Tests include hydrostatic pressure, PMI testing, flattening, flaring and eddy current testing. Each pipe meets national and international quality standards. Our team uses strict packaging procedures to prevent damage during transit, such as wooden cases or waterproof covering, depending on the location and customer requirements. Reliable, strong, and built for harsh conditions, our copper nickel pipes stand up to every test. Reach out today to get the latest copper nickel pipe price list or request a quote tailored to your needs.
| Specifications | ASTM / ASME SB 111 / 151 / 466 |
| Standard | ASTM, ASME and API |
| Size | 1/2" TO 6' IN OD & NB IN Various SWG & SCH |
| Outer Diameter | 4.00 to 22.00 mm |
| Wall Thickness | Between 0.15mm and 1.50 mm |
| Length | Single Random, Double Random & Required Length |
| Schedule | SCH20, SCH30, STD, SCH60, SCH80, SCH120, SCH140, SCH160, XS, XXS |
| Types | Seamless / ERW / Welded / EFW / Fabricated / CDW |
| Form | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
| End | Plain End, Beveled End, Threaded |
| Grades |
Copper Nickel 90/10 (C70600), Cupro Nickel 70/30 (C71500), UNS C71640 |
Copper Nickel Alloy Pipe Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS |
| Copper Nickel 90/10 | 2.0872 | C70600 |
| Copper Nickel 70/30 | 2.0882 | C71500 |
Chemical Composition of CuNi Pipe
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
| Cu-Ni 90-10 | 88.6 min | 1.0 max | .05 max | 9-11 max | 1.8 max | 1 max |
| Cu-Ni 70-30 | 65.0 min | 1 max | .05 max | 29-33 | 0.4-1.0 | 1 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
| Copper Nickel 90-10 / 70-30 | 0.323 lb/in3 at 68 F | 2260 F | 50000 psi | 90-1000 psi | 30 % |
| Property | Metric Units | Imperial Units |
| Melting Point (Liquidus) | 11,500°C | 21,000°F |
| Melting Point (Solidus) | 11,000°C | 20,100°F |
| Density | 8.94 gm/cm³ @ 20°C | 0.323 lb/in³ @ 68°F |
| Specific Gravity | 8.94 | 8.94 |
| Coefficient of Thermal Expansion | 17.1 x 10 -6 / °C (20-300°C) | 9.5 x 10 -5 / °F (68-392°F) |
| Themal Conductivity | 40 W/m. °K @ 20°C | 23 BTU/ft³/ft/hr/°F @ 68°F |
| Thermal Capacity (Specific Heat) | 380 J/kg. °K @ 20°C | 0.09 BTU/lb/°F @ 68°F |
| Electrical Conductivity (Annealed) | 5.26 microhm·cm @ 20°C | 9.1% IACS |
| Electrical Resistivity (Annealed) | 0.190 microhm.cm @ 20°C | 130 ohms (circ mil/ft) @ 68°F |
| Modulus of Elasticity (tension) | 140 GPa @ 20°C | 20 x 106 psi @ 68°F |
| Modulus of Rigidity (torsion) | 52 GPa @ 20°C | 7.5 x 106 psi @ 68°F |
Contact Us for Copper Nickel Pipes Price
| Dimension Tolerance | |||||
| Material | Ultimate Tensile Strength1000 psi (MPa) | Yield Strength 0.5% Ext.under Load 1000 psi (MPa) | YElongation % in 2 in. | Fatigue Strength (10x7 cycles) 1000 psi (MPa) | Burst Pressure* 1000 psi (MPa) |
| Copper-brazed Steel | 48-55 (0.330-0.380) | 28-34 (0.190-0.235) | 30-40 | 30 (0.210) |
19.5 (0.135) |
| C12200-Phosphorus deoxidized Copper | 32-38 (0.220-0.265) | 10-14 (0.070-0.100) | 45-60 | 10 (0.070) |
12 ( 0.083) |
| C70600-Copper Nickel 90-10 | 48-54 (0.330-0.370) | 16-22 (0.110-0.150) | 40-55 | 15 (0.100) |
19 (0.130) |