DIN 86019 CuNi 90/10 Pipes
Copper Nickel C70600 Seamless Pipes for Seawater Service
DIN 86019 CuNi 90/10 pipes, also known as Copper Nickel C70600 pipes, are high-performance copper alloy pipes specifically designed for seawater, marine, and heat exchanger applications.
With excellent resistance to seawater corrosion, biofouling, and erosion, CuNi 90/10 pipes are widely used in shipbuilding, offshore platforms, desalination plants, and power generation systems.
Manufactured according to DIN 86019, these pipes provide reliable performance and long service life in harsh marine environments.
What Is DIN 86019 CuNi 90/10?
DIN 86019 is a German standard specifying requirements for seamless copper-nickel alloy pipes used in marine and industrial applications.
CuNi 90/10 refers to an alloy containing approximately 90% copper and 10% nickel, offering an optimal balance of strength, corrosion resistance, and thermal conductivity.
This material is internationally recognized as UNS C70600.
Equivalent Grades
| Standard | Grade |
|---|---|
| DIN | CuNi 90/10 |
| UNS | C70600 |
| EN | CW352H |
| ISO | CuNi10Fe1Mn |
| ASTM | B466 / B467 C70600 |
Chemical Composition (Typical – CuNi 90/10)
| Element | Content (%) |
|---|---|
| Copper (Cu) | Balance |
| Nickel (Ni) | 9.0 – 11.0 |
| Iron (Fe) | 1.0 – 1.8 |
| Manganese (Mn) | ≤ 1.0 |
| Carbon (C) | ≤ 0.05 |
| Zinc (Zn) | ≤ 0.5 |
Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 360 MPa |
| Yield Strength | ≥ 125 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 80 HB |
Size Range & Specifications
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Manufacturing: Seamless
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Outside Diameter: 6 mm – 273 mm
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Wall Thickness: 0.7 mm – 30 mm
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Length: Random / Fixed / Cut length
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Surface Finish: As drawn / Annealed
| Outside diameter of pipe | 10 bar | Avail | ||||
|---|---|---|---|---|---|---|
| Wall THK | Weight |
Pressure |
||||
| nominal | actual | actual | (theoretical) | Rating | ||
| inch | DN | mm | mm | kg/m | ||
| 0.125 | 10 | 1.0 | 0.26 | 10 | ||
| 0.25 | 12 | 1.0 | 0.31 | 10 | ||
| 0.38 | 10 | 16 | 1.0 | 0.42 | 14 | |
| 0.5 | 15 | 20 | 1.0 | 0.53 | 14 | |
| 0.75 | 20 | 25 | 1.5 | 0.99 | 14 | |
| 1 | 25 | 30 | 1.5 | 1.20 | 10 | |
| 1.25 | 32 | 38 | 1.5 | 1.54 | 10 | |
| 1.5 | 40 | 44.5 | 1.5 | 1.81 | 10 | |
| 2 | 50 | 57 | 1.5 | 2.34 | 10 | |
| 2.5 | 65 | 76.1 | 2.0 | 4.16 | 14 | |
| 3 | 80 | 88.9 | 2.0 | 4.88 | 10 | |
| 4 | 100 | 108 | 2.5 | 7.41 | 14 | |
| 5 | 125 | 133 | 2.5 | 9.16 | 10 | |
| 6 | 150 | 159 | 2.5 | 10.99 | 10 | |
| 7 | 175 | 193.7 | 2.5 | 13.43 | 10 | |
| 8 | 200 | 219.1 | 3.0 | 18.21 | 10 | |
| 10 | 250 | 267 | 3.0 | 22.24 | 10 | |
| 12 | 300 | 323.9 | 4.0 | 35.94 | 10 | |
| 14 | 350 | 368 | 4.0 | 40.9 | 10 | |
| 16 | 400 | 4191 | 4.0 | 46.62 | 10 | |
| 18 | 450 | 457.2 | 4.0 | 50.91 | 10 | |
| 20 | 500 | 508 | 4.5 | 63.63 | 10 | |
| 24 | 600 | 610 | 5.0 | 84.96 | 10 | |
| 28 | 700 | 711 | 6.0 | 118.80 | 10 | |
| 32 | 800 | 813 | 6.0 | 135.99 | 10 | |
| 36 | 900 | 914 | 8.0 | 203.57 | 10 | |
Inspection & Quality Control
DIN 86019 CuNi 90/10 pipes are supplied with full inspection and testing, including:
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Chemical composition analysis
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Mechanical property testing
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Eddy current or ultrasonic testing
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Dimensional inspection
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Visual examination
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Certification: EN 10204 3.1
Applications
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Seawater piping systems
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Shipbuilding and marine engineering
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Offshore oil & gas platforms
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Heat exchangers and condensers
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Desalination and cooling water systems
DIN 86019 CuNi 90/10 pipes (UNS C70600) provide a proven and reliable solution for seawater and marine applications.
With excellent corrosion resistance, high durability, and compliance with international standards, these copper-nickel pipes are widely trusted in demanding marine and industrial environments.
Related Products
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CuNi 70/30 (UNS C71500) Pipes
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Copper Nickel Pipe Fittings
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CuNi Flanges and Forged Components
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Heat Exchanger Tubes
Applications : DIN 86019 CuNi90/10 pipes find widespread applications across various industries, including:
- Shipbuilding and Maritime: Seawater piping, heat exchangers, and offshore platforms.
- Chemical Processing: Petrochemical plants, refinery systems, and corrosive fluid handling.
- Power Generation: Thermal power plants, nuclear reactors, and steam distribution networks.
- HVAC and Refrigeration: Cooling systems, refrigeration units, and air conditioning ducts.
- Water Treatment: Desalination plants, wastewater management, and potable water distribution.
DIN 86019 UNS C70600 CuNi 90/10 pipes deliver outstanding corrosion resistance, durability, and long service life in marine, offshore, and seawater applications. With excellent weldability and compliance with international standards, CuNi 90/10 pipes are a reliable and cost-effective solution for harsh marine environments.
