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Home > Copper Nickel > Copper Nickel Boiler Tubing
Copper Nickel Boiler Tubing is a top-notch option crafted from copper-nickel alloys, specifically designed for boiler systems, heat exchangers, and condensers. It’s well-regarded for its impressive resistance to corrosion, particularly in seawater and marine settings, ensuring it remains reliable and durable even under high temperatures and pressures. This tubing is not only lightweight but also strong, boasting excellent thermal conductivity, resistance to erosion and stress corrosion cracking, and consistent mechanical performance. This makes it a fantastic choice for power plants, shipbuilding, offshore platforms, and industrial boiler systems.
Typically, Copper Nickel Boiler Tubing is made from CuNi 70/30 (70% copper, 30% nickel) or CuNi 90/10 (90% copper, 10% nickel) alloys, with trace amounts of iron and manganese. This blend boosts its tensile and yield strength, enhances its corrosion and erosion resistance, and provides good ductility. On the mechanical side, the tubing shows high toughness, fatigue resistance, and stability during thermal cycling and pressure changes, ensuring it performs reliably in challenging boiler and heat exchange situations.
| Boiler Tube Standard | ASTM B552 / ASME SB552 |
| Seamless Boiler Tube Sizes | 1 / 2″ NB – 16″ NB |
| Welded Boiler Tube Sizes | 1 / 2″ NB – 24″ NB |
| Boiler Tube Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Boiler Tubes available Ex-stock |
| Boiler Tube Manufacturing Process | Seamless / Welded / ERW |
| Cupro Nickel Boiler Tube Schedule | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Boiler Tube Length | Single Random, Double Random, Standard & Cut length |
| Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
| Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish for Cupro Nickel Boiler Tubes, Finish as per customer Requirements |
| Value Added Services | Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing |
| Properties | Imperial | Metric |
|---|---|---|
| Yield strength (depending on temper) | 40000-76000 psi | 276-524 MPa |
| Shear modulus | 6380 ksi | 44.0 GPa |
| Tensile strength | 38000-77000 psi | 262-531 MPa |
| Elongation at break (in 50.8 mm) | 46% | 46% |
| Poisson’s ratio | 0.34 | 0.34 |
| Elastic modulus | 17000 ksi | 117 GPa |
| Machinability (UNS C36000 (free-cutting brass) = 100) | 20 | 20 |
| Designation | Chemical Composition % | ||||||||
| Cu | Sn | Al | As | Ni | Fe | Mn | Pb max. | Zn | |
| C70400 | Rem | – | – | – | 4.8-6.2 | 1.3-1.7 | 0.3-0.8 | 0.05 | 1.0max |
| 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?¹.cm?¹ @ 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 10 6 psi @ 68°F |
|
Modulus of Rigidity (torsion) |
52 GPa @ 20°C |
7.5 x 10 6 psi @ 68°F |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Copper Nickel Boiler Tubing from Laila Pipes and Tubes ensures outstanding corrosion resistance, high strength, and durability. Our Tube is designed for diverse industrial applications, delivering reliability and performance in challenging environments while maintaining competitive pricing.
Choose Copper Nickel Boiler Tubing from Laila Pipes and Tubes for its superior seawater corrosion resistance, biofouling protection, and excellent thermal conductivity, making it ideal for marine, industrial, and coastal applications requiring long-lasting performance and reliability.
Yes, we offer custom sizes for Copper Nickel Boiler Tubing to meet your specific requirements. Our team at Laila Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@lailapipes.com.
You’ll find Copper Nickel Boiler Tubing widely used in industries that demand corrosion-resistant, durable, and high-performance tubing. In power generation and marine sectors, it’s utilized for boiler systems, heat exchangers, and condensers. The offshore and chemical industries also rely on it for seawater piping and transporting high-salinity fluids. Its unique combination of thermal conductivity, corrosion resistance, and mechanical strength makes Copper Nickel Boiler Tubing a go-to choice for marine, industrial, and energy applications.
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