Copper Nickel 70/30 is a copper-nickel alloy containing approximately 70% copper and 30% nickel, with controlled additions of iron and manganese. This composition significantly enhances resistance to seawater corrosion, erosion, bio-fouling, and stress corrosion cracking, making Copper Nickel 70/30 Tubes the preferred choice for seawater piping systems, heat exchangers, and condensers.
ASTM B466 Cu-Ni 70/30 Pipes, UNS C71500 Pipes, 70/30 Copper Nickel Tube, ASME SB111 C71500 Tubes, Cu-Ni 70-30 Tubing Manufacturer & Supplier in USA
USA Piping Solution is a reputable manufacturer, supplier, and exporter of Copper Nickel 70/30 Pipes & Tubes, widely recognized for supplying UNS C71500 Pipes manufactured in accordance with ASTM B111 and ASME SB111 specifications. These Copper Nickel 70/30 Pipes or also called Cupro Nickel 70/30 Pipes and Tubes or Cu-Ni 70/30 Pipes are designed to withstand the harsh marine, offshore and industrial conditions where high levels of corrosion resistance are required.
Our Copper Nickel 70/30 Pipes and Tubes come in a broad variety of sizes, thicknesses, diameter and forms of manufacture. We provide seamless, welded, ERW, EFW, and fabricated Cu-Ni 70/30 Pipes and Tubes as per the various project requirements.
The Copper Nickel Pipes and Tubes are produced in round, square, rectangular, hydraulic, honed, single random, double random and custom cut lengths. End finishes are plain end, beveled end and threaded end which provides simple installation in any application.
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Copper Nickel 70/30 Pipes & Tubes Specifications
| Parameter | Details |
|---|---|
| Standards | ASTM B111, ASTM B543, ASTM B552 / ASME SB111, SB543, SB552 |
| Dimensions | ASTM, ASME, API |
| Tube Size | 1/2″ to 6″ OD & NB in various SWG & SCH |
| Type | Seamless / ERW / Welded / Fabricated |
| Form | Round, Hydraulic |
| Length | Single Random, Double Random, Cut Length |
| End Finish | Plain End, Beveled End, Threaded |
Chemical Composition of Cupro Nickel 70/30 Pipes & Tubes
| Element | Copper (Cu) | Nickel (Ni) | Iron (Fe) | Manganese (Mn) | Zinc (Zn) | Lead (Pb) |
|---|---|---|---|---|---|---|
| Percentage | 65.0% min | 29 – 33% | 0.4 – 1.0% | 1.0% max | 1.0% max | 0.05% max |
Mechanical Properties of Cupro Nickel 70/30 Tubes
| Density | Melting Point | Yield Strength (0.2% Offset) | Tensile Strength | Elongation |
|---|---|---|---|---|
| 0.323 lb/in³ at 68°F | 2260°F | 20,000 psi | 50,000 psi | 30% |
Equivalent Grades for Cu-Ni 70/30 Pipes & Tubes
| Standard | UNS | Werkstoff Nr. |
|---|---|---|
| Cupro Nickel 70/30 | C71500 | 2.0882 |
Types of Copper Nickel 70/30 Pipes and Tubes
Application of Cu-Ni 70/30 Tubes
- Offshore oil drilling platforms: Used in seawater cooling, fire-water, and hydraulic systems due to excellent resistance to seawater corrosion and erosion.
- Marine & seawater piping systems: Ideal for shipbuilding and desalination plants because of strong biofouling and chloride corrosion resistance.
- Heat exchangers & condensers: Commonly used where seawater or brackish water is the cooling medium, offering reliable heat transfer and long service life.
- Power generation plants: Applied in condensers and cooling circuits for stable performance under high temperature and pressure conditions.
- Petrochemical & chemical processing: Suitable for handling corrosive chemicals and process fluids with good strength and corrosion resistance.
- Gas processing units: Used in cooling and condensate systems due to resistance to moisture-related corrosion.
- Pharmaceutical & chemical equipment: Used in process piping and heat exchangers where cleanliness and material stability are required.
- Pulp & paper industry: Applied in heaters and cooling systems handling corrosive process liquids.
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