C71500, also known as Copper Nickel 70/30, is a copper-nickel alloy renowned for its excellent resistance to
seawater corrosion and erosion. This alloy is widely used in marine and offshore applications where these
properties are crucial for longevity and performance.
Chemical Composition
C71500 is primarily composed of the following elements:
| Element |
Percentage (%) |
| Copper (Cu) |
70.0 |
| Nickel (Ni) |
30.0 |
Mechanical Properties
C71500 exhibits excellent mechanical properties suitable for demanding marine applications:
| Property |
Value |
| Tensile Strength |
372 - 517 MPa |
| Yield Strength |
138 - 483 MPa |
| Elongation |
30 - 40% |
| Hardness (Rockwell B) |
75 - 88 |
| Electrical Conductivity |
5 - 7% IACS (International Annealed Copper Standard) |
| Density |
8.94 g/cm³ |
Corresponding Country's Brand
C71500 is recognized under different brands in various countries. Here are some equivalents:
| Country |
Brand Name |
| USA |
Copper Nickel 70/30 |
| UK |
- |
| Germany |
CuNi30 |
| Japan |
C7150 |
| China |
BFe30-1-1 |
Common Questions and Answers
1. What are the primary applications of C71500 in industry?
Answer: C71500 Copper Nickel 70/30 is extensively used in marine environments due to its
superior resistance to seawater corrosion and erosion. It is commonly employed in seawater piping systems,
heat exchangers, condensers, and offshore structures.
2. Is C71500 suitable for use in contact with potable water?
Answer: Yes, C71500 is suitable for use in contact with potable water due to its corrosion
resistance and compliance with drinking water standards. It is often used in desalination plants, water
distribution systems, and plumbing fittings.
3. How does C71500 compare to C70600 (Copper Nickel 90/10)?
Answer: C71500 (70/30) has a higher copper content and lower nickel content compared to
C70600 (90/10). This gives C71500 slightly lower corrosion resistance but higher strength and hardness. Both
alloys are suitable for marine applications, with C71500 being preferred where higher mechanical properties
are required.
Summary Table
| Aspect |
Details |
| Chemical Composition |
Cu (70.0%), Ni (30.0%) |
| Mechanical Properties |
Tensile Strength: 372-517 MPa, Yield Strength: 138-483 MPa, Elongation: 30-40%, Hardness: 75-88
Rockwell B, Electrical Conductivity: 5-7% IACS, Density: 8.94 g/cm³
|
| Country Brands |
USA: Copper Nickel 70/30, Germany: CuNi30, Japan: C7150, China: BFe30-1-1 |
| Applications |
Marine piping systems, heat exchangers, condensers, offshore structures |
C71500 Copper Nickel 70/30 is a robust alloy known for its excellent corrosion resistance in marine
environments, making it ideal for applications where durability and resistance to seawater are critical.
