ASTM B111 C70600 Copper Nickel Tube (UNS C70600)
ASTM B111 C70600 Tube, also known as UNS C70600, is a 90/10 copper nickel alloy tube widely used in marine, offshore, and heat transfer applications. This copper-nickel alloy is renowned for its outstanding resistance to seawater corrosion, biofouling, and erosion, making it a preferred material for condensers, heat exchangers, and desalination plants.
Key Features
- UNS C70600 (90% Copper, 10% Nickel) alloy composition
- Excellent resistance to seawater and brackish water corrosion
- High thermal conductivity for efficient heat transfer
- Good strength with excellent ductility and formability
- Superior resistance to biofouling and stress corrosion cracking
- Long service life in marine and offshore environments
Equivalent Grade
| Standard | Equivalent Grade |
|---|---|
| UNS | C70600 |
| EN | CuNi10Fe1Mn |
| DIN | 2.0872 |
| ISO | CuNi10Fe1Mn |
| BS | CN102 |
Sizes
- Outside Diameter: 6 mm to 168.3 mm
- Wall Thickness: 0.7 mm to 10 mm
- Length: Up to 6 meters, cut lengths available
- Schedule: As per ASTM B111 or customer requirement
ASTM B111 UNS C70600 Material Properties
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Copper (Cu) | Balance |
| Nickel (Ni) | 9.0 – 11.0 |
| Iron (Fe) | 1.0 – 1.8 |
| Manganese (Mn) | ≤ 1.0 |
| Zinc (Zn) | ≤ 0.5 |
| Lead (Pb) | ≤ 0.02 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 275 MPa |
| Yield Strength | ≥ 105 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 80 HRB |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.94 g/cm³ |
| Melting Point | 1100 – 1150°C |
| Thermal Conductivity | ~50 W/m·K |
| Electrical Resistivity | 0.19 µΩ·m |
Type of ASTM B111 C70600 Tubes
- C70600 Seamless Tubes
- C70600 Condenser Tubes
- C70600 Heat Exchanger Tubes
- C70600 Marine Grade Tubes
- C70600 Annealed Tubes
Applications
- Marine and offshore piping systems
- Heat exchangers and condensers
- Seawater cooling systems
- Desalination plants
- Power generation plants
- Shipbuilding and naval applications
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