90/10 Copper Nickel Pipe Main Features
Excellent seawater corrosion resistance:
This is the most prominent advantage of C70600. It can form a stable protective film in seawater, effectively resist pitting, crevice corrosion and galvanic corrosion, and maintain good corrosion resistance even in salty, oxygen-containing or velocity-changing seawater.
High erosion corrosion resistance:
Copper nickel alloy can withstand higher flow rates than other copper alloys, and the protective film it forms can also maintain toughness in high-speed water flow, effectively resisting erosion corrosion (or erosion-corrosion).
Good biofouling resistance:
Copper ions have a certain bactericidal effect, making it difficult for marine organisms to attach to the surface of C70600, reducing biofouling and maintaining heat exchange efficiency.
Medium strength:
It has good medium strength, enough to meet the needs of most pipeline and heat exchange applications.
Excellent weldability
The alloy has good welding performance and is suitable for various welding methods, including gas welding, arc welding, laser welding, etc., ensuring that welding operations can be easily carried out during manufacturing and maintenance.
Excellent thermal stability
C70600 copper nickel pipe maintains its physical and mechanical properties in high temperature environments and is suitable for working under high temperature conditions, such as in steam and heat exchange equipment.
Composition of C70600 Copper-Nickel Tubes
| C70600 chemical composition | DIN 86019 | EEMUA 144 | BS 2871 | ASTM B466 | JIS H 3300 | MIL-T-16420K |
| Ni% | 9.0-11.0 | 10.0-11.0 | 10.0-11.0 | 9.0-11.0 | 9.0-11.0 | 9.0-11.0 |
| Fe% | 1.5-1.8 | 1.5-2.0 | 1.0-2.0 | 1.0-1.8 | 1.0-1.8 | 1.0-1.8 |
| Mn% | 0.5-1.0 | 0.5-1.0 | 0.5-1.0 | Max.1.0 | 0.2-1.0 | Max1.0 |
| C% | Max.0.05 | Max.0.05 | Max.0.05 | Max.0.05 | Max.0.05 | |
| Pb% | Max.0.03 | Max.0.01 | Max.0.01 | Max.0.02 | Max.0.05 | Max.0.02 |
| S% | Max.0.015 | Max.0.02 | Max.0.05 | Max.0.02 | Max.0.02 | |
| P% | Max.0.02 | Max.0.02 | Max.0.02 | Max.0.02 | ||
| Zn% | Max.0.15 | Max.0.20 | Max.0.50 | Max.0.50 | Max.0.05 | |
| Zr% | Max.0.03 | |||||
| Others | Max.0.30 | Max.0.30 | Max.0.30 | |||
| Cu% | Balance | Balance | Balance | Balance | Cu+Ni+Fe+MnMin.99.5 | Min.86.5 |
Chemical Composition
| Cu | Fe | Pb | Mn | Ni | Zn | |
| Min/Max | Rem | 1.0 - 1.8 | 0.05 | 1 | 9.0 - 11.0 | 1 |
| Nominals | 88.6000 | 1.4000 | - | - | 10.0000 | - |
Physical Properties
| Product Property | US Customary | Metric |
| Coefficient of Thermal Expansion | 9.5 · 10-6 per oF (68-572 F) | 17.1 · 10-6 per oC (20-300 C) |
| Density | 0.323 lb/in3 at 68 F | 8.94 gm/cm3 @ 20 C |
| Electrical Conductivity | 9 %IACS @ 68 F | 0.053 MegaSiemens/cm @ 20 C |
| Electrical Resistivity | 115.0 ohms-cmil/ft @ 68 F | 19.12 microhm-cm @ 20 C |
| Melting Point - Liquidus | 2100 F | 1149 C |
| Melting Point - Solidus | 2010 F | 1099 C |
| Modulas of Elasticity in Tension | 18000 ksi | 124000 MPa |
| Modulus of Rigidity | 6800 ksi | 46880 MPa |
| Specific Gravity | 8.94 | 8.94 |
| Specific Heat Capacity | 0.09 Btu/lb/oF at 68 F | 377.1 J/kg · oK at 293 K |
| Thermal Conductivity | 26.0 Btu · ft/(hr · ft2 · oF) at 68F | 45.0 W/m · oK at 20 C |
Applications of C70600 Copper-Nickel Tubes:
Marine & Shipbuilding – Seawater cooling, condensers, heat exchangers, ballast systems
Oil & Gas Industry – Offshore platforms, desalination plants, piping systems'
Power Generation – Steam turbines, nuclear plants, cooling systems
Aerospace & Defense – Hydraulic tubing, high-performance applications
Chemical Processing – Acid-resistant piping, corrosion-resistant equipment
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.
