GNEE C70600 pipe, also known as CuNi 90/10 pipe, UNS C70600 pipe, ASTM B466 C70600 copper-nickel pipe, or Cupro Nickel 90/10 pipe, conforms to ASME B36.19 M, DIN 86019, EEMUA 144, and MIL-T-16420 standards.
GNEE C70600 pipe can withstand the test of time even in harsh environments such as saltwater. According to ASME B36.19 M, DIN 86019, EEMUA 144, and MIL-T-16420 standards, this pipe features high tensile strength, excellent corrosion resistance, outstanding oxidation resistance, high-temperature stability, erosion resistance, and various pressure ratings.
Chemical Composition
| Elements | ||||||
|---|---|---|---|---|---|---|
| Cu(1,2) | Pb | Zn | Fe | Ni(3) | Mn | |
| (1) Cu + Sum of Named Elements 99.5% min. (2) Cu value includes Ag. (3) Ni value includes Co. |
||||||
| Min (%) | 1.0 | 9.0 | ||||
| Max (%) | Rem | 0.05 | 1.0 | 1.8 | 11.0 | 1.0 |
Physical Properties
| Melting Point - Liquidus°F | 2100 |
|---|---|
| Melting Point - Solidus°F | 2010 |
| Densitylb/cu in. at 68°F | 0.323 |
| Specific Gravity | 8.94 |
| Electrical Conductivity% IACS at 68°F | 9 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 26 |
| Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) | 9.5 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 18000 |
| Modulus of Rigidityksi | 6800 |
Fabrication Properties
| Technique | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Excellent |
| Oxyacetylene Welding | Fair |
| Gas Shielded Arc Welding | Excellent |
| Coated Metal Arc Welding | Good |
| Spot Weld | Good |
| Seam Weld | Good |
| Butt Weld | Excellent |
| Capacity for Being Cold Worked | Good |
| Capacity for Being Hot Formed | Good |
| Machinability Rating | 20 |
Uses & Applications for C70600 Copper Nickel Tube & Pipe:
C70600 90/10 alloy is widely used in marine applications due to its excellent resistance to seawater corrosion.
C70600 90/10 is used primarily in engine cooling, wastewater, and fire suppression applications on commercial and military vessels.
The alloy is also found uses in offshore oil and gas production, power generation, and desalination plants.
FAQ
1. What is C70600?
C70600, commonly known as 90-10 Copper-Nickel, is an alloy consisting of approximately 90% Copper, 10% Nickel, and small additions of Iron and Manganese. It is renowned for its excellent corrosion resistance in seawater and marine environments.
2. What is the primary advantage of using C70600?
Its key advantage is outstanding resistance to seawater corrosion, including impingement attack, and inherent biofouling resistance, which reduces marine growth on surfaces.
3. Where is C70600 most commonly used?
It is the standard material for:
Seawater piping systems on ships and offshore platforms
Condenser and heat exchanger tubes
Desalination plant components
Marine hardware and freshwater systems
4. How does C70600 compare to C71500 (70-30 CuNi)?
C70600 is more cost-effective with good all-around corrosion resistance. C71500 offers superior strength and better resistance to higher velocity seawater and erosion-corrosion, but at a higher cost.
5. Why is C70600 resistant to seawater?
It forms a thin, adherent, and protective surface oxide film that is stable in seawater. This film is a complex mixture of copper oxide and nickel and iron oxides, which heals itself if damaged.
Our spot inventory
| ASME SB111 C70600 |
C70600 seamless condenser tube |
C70600 welded copper nickel pipe |
| ASTM B111 C70600 |
ASTM B466 C70600 pipe |
C70600 cupronickel boiler tube |
| 90/10 copper nickel pipe |
C70600 heat exchanger tube |
C70600 welded copper nickel pipe |
| SB111 UNS C70600 |
90/10 cupronickel condenser tube |
ASTM B111 C70600 heat exchanger tube |
|
C70600 copper nickel pipe |
ASTM B111 C70600 heat exchanger tube |
ASME SB111 C70600 copper nickel pipe |
About us
Gnee is a premier manufacturer and international supplier of comprehensive copper and copper alloy products, committed to delivering excellence in copper tubes, copper sheets, copper plates, copper bars, copper rods, copper wires, and copper strips.
Our Extensive Product Portfolio & Specifications:
Copper Tubes & Pipes:
We supply a full range including **Capillary Tubes, Thin-Walled Copper Tubes, Thick-Walled Copper Tubes, Round Pipes, Square Pipes, Rectangular Pipes, Welded Pipes, Seamless Pipes, Heat Exchanger Tubes, and Condenser Tubes.
Copper Sheets, Plates:
Our flat-rolled products cover Copper Foils, Thin Sheets, Thick Plates, and Circles (Round Plates) in various tempers (O, H) for diverse applications.
Copper Bars, Rods & Profiles:
We offer Round Bars, Square Bars, Hexagonal Bars, and Flat Bars with excellent machinability and strength.
Copper Wires & Strips:
Our lineup includes high-conductivity Bare Copper Wires, Stranded Wires, and precisely manufactured Copper Strips.
Common Alloys & International Standards:
We master a wide array of materials compliant with ASTM, EN, JIS, and GB standards:
Pure Copper: C11000 (ETP Copper), C10200 (Oxygen-Free Copper), C12000 (DLP)
Brass Alloys: C26000 (Cartridge Brass), C27200 (Brass), C28000 (Muntz Metal)
Copper-Nickel: C70600 (CuNi90/10), C71500 (CuNi70/30)
Phosphor Bronze: C51900, C52100, C54400
Serving industries from HVAC/R and plumbing to electrical, automotive, and marine engineering, Gnee provides OEM support, competitive pricing, and reliable bulk supply for your global projects.
