ASTM B466 C70600 (UNS C70600) Nickel Alloy Tubes
ASTM B466 C70600 (UNS C70600) is a widely used copper-nickel alloy pipe and tube specification covering seamless Cu-Ni products for marine, industrial, and heat transfer applications. Commonly known as 90/10 Copper Nickel, this alloy offers an excellent balance of corrosion resistance, mechanical strength, and thermal stability, especially in seawater and brackish water environments.
ASTM B466 is the standard specification for seamless copper-nickel pipe and tube, and C70600 is the UNS designation for a 90% copper and 10% nickel alloy with small additions of iron and manganese. These alloying elements significantly enhance resistance to seawater corrosion, erosion, and biofouling. Due to its proven reliability and long service life, ASTM B466 C70600 is extensively used in marine systems, condensers, heat exchangers, and offshore installations.
Key Features
- Excellent resistance to seawater and saltwater corrosion
- High resistance to erosion and biofouling
- Good mechanical strength and ductility
- Stable performance under fluctuating temperatures
- Excellent weldability and fabrication characteristics
- Long service life with low maintenance costs
UNS C70600 Equivalent Material
| Standard | Equivalent Grade |
|---|---|
| UNS | C70600 |
| EN | CuNi10Fe1Mn |
| DIN | 2.0872 |
| ISO | CuNi10Fe1Mn |
| JIS | C7060 |
Sizes
- Outside Diameter: 6 mm to 273 mm
- Wall Thickness: 0.8 mm to 20 mm
- Length: Random length, fixed length, or cut-to-size
- Forms Available: Seamless pipes, straight tubes, condenser tubes
C70600 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 |
| Others | Trace |
ASTM B466 C70600 Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 360 – 450 MPa |
| Yield Strength | 125 – 170 MPa |
| Elongation | ≥ 30 % |
| Hardness | ~85 – 110 HB |
UNS C70600 Physical Properties
| Property | Value |
|---|---|
| Density | ~8.94 g/cm³ |
| Melting Range | 1100 – 1140°C |
| Thermal Conductivity | ~50 W/m·K |
| Electrical Conductivity | ~8 % IACS |
Type of C70600 Tubes
- Seamless Copper-Nickel Pipes
- Seamless Copper-Nickel Tubes
- Condenser Tubes
- Heat Exchanger Tubes
Applications
- Marine Piping Systems
- Shipbuilding
- Offshore Platforms
- Seawater cooling lines
- Heat Exchangers
- Surface Condensers
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