ASTM B466 C71520 Copper Nickel Alloy (UNS C71520)
ASTM B466 C71520 (UNS C71520) is a modified 70/30 copper-nickel alloy specified under ASTM B466 for seamless copper-nickel pipe and tube. This alloy includes controlled additions of iron and manganese to further enhance resistance to seawater corrosion, erosion, and biofouling. Compared to standard C71500, C71520 offers improved strength and durability in high-velocity seawater and aggressive marine environments.
Key Features
- Superior resistance to seawater and brackish water corrosion
- Improved erosion and impingement resistance
- Higher mechanical strength than conventional 70/30 Cu-Ni
- Excellent resistance to biofouling
- Good weldability and fabrication properties
- Long service life in harsh marine conditions
UNS C71520 Equivalent Material
| Standard | Grade |
|---|---|
| UNS | C71520 |
| EN | CuNi30Fe1Mn |
| DIN | 2.0882 (Modified) |
| ISO | CuNi30Fe1Mn |
| JIS | C7150 (Modified) |
Sizes
- Outside Diameter: 6 mm to 273 mm
- Wall Thickness: 1.0 mm to 25 mm
- Length: Random, fixed, or cut-to-size
- Forms Available: Seamless pipes and tubes
ASTM B466 C71520 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Copper (Cu) | Balance |
| Nickel (Ni) | 29.0 – 33.0 |
| Iron (Fe) | 0.4 – 1.0 |
| Manganese (Mn) | 0.5 – 1.0 |
| Zinc (Zn) | ≤ 0.5 |
| Others | Trace |
C71520 Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 480 – 570 MPa |
| Yield Strength | 190 – 280 MPa |
| Elongation | ≥ 30 % |
| Hardness | ~125 – 160 HB |
UNS C71520 Physical Properties
| Property | Value |
|---|---|
| Density | ~8.9 g/cm³ |
| Melting Range | 1170 – 1240°C |
| Thermal Conductivity | ~29 W/m·K |
| Electrical Conductivity | ~3 % IACS |
Type of C71520 Pipe & Tubes
- Seamless Copper-Nickel Pipes
- Seamless Copper-Nickel Tubes
- Condenser Tubes
- Heat Exchanger Tubes
Applications
- Marine piping systems
- Offshore Platforms
- Seawater Cooling Lines
- Desalination Plants
- Power Plant Condensers
Reviews
There are no reviews yet.