Copper Nickel Fittings
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MTC EN 10204 3.1Mill Certified
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ASTM / ASMEGlobal Standards
Product Details & Specs
Copper Nickel Fittings
J K Pipefit is a premier supplier of Copper Nickel (Cupro-Nickel) fittings in both 90/10 (C70600) and 70/30 (C71500) alloys engineered specifically for seawater and marine environments.
Key Specifications
- Sizes: 1/2" - 12" (DN15 - DN300)
- Pressure Ratings: 10 Bar, 14 Bar, 16 Bar, 20 Bar, EEMUA Schedules
- Types: Buttweld (ASME B16.9 / DIN 86019) & Socket Weld / Threaded
- Alloys: CuNi 90/10 (C70600) & CuNi 70/30 (C71500)
Technical Specification Table
Copper Nickel 90/10 (C70600) & 70/30 (C71500) Seawater Specs Matrix
Standard dimension and weight charts for engineering calculations and procurement sizing.
| Alloy Grade | Copper % | Nickel % | Iron % | Manganese % | Key Marine Characteristics |
|---|---|---|---|---|---|
| CuNi 90/10 (C70600) | 88.6% min | 9.0 - 11.0% | 1.0 - 1.8% | 1.0% max | High biofouling resistance, excellent seawater corrosion immunity |
| CuNi 70/30 (C71500) | 66.5% min | 29.0 - 33.0% | 0.4 - 1.0% | 1.0% max | Higher velocity tolerance (up to 4.5 m/s), superior cavitation resistance |
| EEMUA 144 UNS 7060X | 87.5% min | 10.0 - 11.0% | 1.5 - 2.0% | 0.75% max | Standardized for North Sea and Middle East offshore platforms |
* Custom thicknesses, non-standard schedules, and special cuts are available on request.
Available Types
Copper Nickel Fittings Types
90° & 45° Long Radius Elbows
Equal Tees
Reducing Tees
Concentric Reducers
Eccentric Reducers
End Caps
Stub Ends
Return Bends
Crosses
Material Grades
- C70600 (CuNi 90/10)
- C70620 (CuNi 90/10 with improved weldability)
- C71500 (CuNi 70/30)
- C71520 (CuNi 70/30 with improved weldability)
- BS 2871 CN102 / CN107
- DIN 86019 CuNi10Fe1Mn / CuNi30Fe2Mn2
- EEMUA 144 / 234
- MIL-T-16420K
Standards & Specifications
ASTM B366ASTM B467EEMUA 144 / 234DIN 86019BS 2871MIL-T-16420ASME B16.9EN 12449
Sizes Available
- 1/2" to 12"
- SCH 10 to SCH 80
- Custom sizes on request
Industries
Applications
Seawater Cooling Systems
Desalination Plants
Offshore Platforms
Ship Building
Marine Heat Exchangers
Fire Fighting Systems
Ballast Water Systems
Power Plant Condensers
Frequently Asked Questions
Frequently Asked Technical Questions about Copper Nickel Fittings
Copper Nickel (especially 90/10) forms a protective oxide layer that naturally inhibits marine organism growth (anti-biofouling) and resists pitting and crevice corrosion in chloride-rich saline water.
Need Copper Nickel Fittings with Mill Test Certificates?
Contact our sales desk at CP Tank, Mumbai for competitive wholesale rates, ready stock verification, and custom cut lengths.