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Copper-Nickel Alloy
Copper-Nickel Alloys (Cu-Ni Alloys) are alloys composed of a copper (Cu) matrix with nickel (Ni) and small amounts of other elements such as iron, manganese, and zinc. The nickel content typically ranges from 5% to 45%, with the specific ratio adjusted based on performance requirements.
The difference between copper-nickel alloy and pure copper and pure nickel
C70600 (Cu90Ni10 Alloy)
10% Nickel content, ideal for seawater cooling systems and heat exchangers.
C71500 (Cu70Ni30 Alloy)
30% Nickel content for enhanced strength, used in high-pressure pipes and ship propulsion systems.
C70600 (Cu90Ni10 Alloy)
10% Nickel content, ideal for seawater cooling systems and heat exchangers.
C71500 (Cu70Ni30 Alloy)
30% Nickel content for enhanced strength, used in high-pressure pipes and ship propulsion systems.
Material Properties of Copper-Nickel Alloy
Copper-Nickel Alloy exhibits a unique combination of physical and mechanical properties that make it suitable for challenging environments.
Physical Properties
Advantages: Higher than most aluminum alloys (600~700°C), it can work stably in medium and high temperature environments (such as heat exchangers).
Slightly heavier than steel (7.85 g/cm3), but significantly lighter than metals like lead and tungsten, it is suitable for weight-sensitive structural parts (e.g., ship components).
Much lower than pure copper's 401 W/(m・K), but higher than stainless steel's 15~25 W/(m・K)
Close to carbon steel, suitable for welding or assembly with metal parts, reducing stress caused by temperature changes
Significantly higher than pure copper's 0.017 μΩ·m and lower than most high-resistance alloys.
Applications: Due to its moderate conductivity and corrosion resistance, it is often used in cables and electrical contacts in marine environments.
Mechanical of Copper-Nickel Alloys
Copper-Nickel Alloys exhibits an exceptional combination of mechanical properties that make it suitable for high-performance applications.
| unit | Cu90Ni10 Alloy (C70600) | Cu70Ni30 Alloy (C71500) | Comparison reference (pure copper) | |
| Tensile Strength | MPa | 345~485 | 415~550 | 220~310 |
| Yield Strength(0.2%) | MPa | 140~310 | 170~380 | 60~120 |
| Elongation (annealed state) | % | 30~45 | 25~40 | 45~50 |
| Hardness (Brinell, HB) | - | 80~140 | 90~160 | 40~80 |
| Elastic Modulus | GPa | 130~150 | 135~155 | 110~120 |
Characteristics of Copper-Nickel Alloy
Ideal for marine engineering, chemical pipelines, and offshore equipment where long-term resistance to saltwater erosion is critical.
Easily weldable, forgeable, and machinable, allowing for custom fabrication into pipes, sheets, or complex components.
Better electrical and thermal conductivity than most alloys, suitable for electrical components.
FORMS WE CAN PROVIDE
Our Production Advantages of Copper-Nickel Alloys
High-purity Raw Materials
We use electrolytic copper and nickel that meet international standards, ensuring precise alloy composition.
Customizable Nickel Content and Additives
Available in sheets, pipes, rods, and custom shapes, we can adjust nickel content and additives to meet customer requirements.
Quality Testing
Each batch undergoes spectral analysis and corrosion resistance testing, with certified reports provided.
Applications of Copper-Nickel Alloys
Chemical industry
Acid and alkali pipelines and reactors.
Marine engineering
Ship piping, offshore platforms, and desalination equipment.
Energy
Nuclear power plant heat exchangers and oil and gas extraction equipment.
Construction and decoration
Weather-resistant structural components (e.g., door and window frames for high-humidity environments).