Chemical Composition
C72600 Cupronickel is a copper-nickel alloy primarily composed of copper (Cu) and nickel (Ni), with minor amounts of iron (Fe) and manganese (Mn). Its typical composition is approximately 60%-70% copper, 25%-35% nickel, 0.5%-1.5% iron, and 0.5%-1.5% manganese. This alloy's precise composition ensures excellent corrosion resistance, mechanical strength, and processability.
C72600 Cupronickel offers excellent comprehensive properties
1. Corrosion Resistance: It performs exceptionally well in seawater, acidic, and alkaline environments, with outstanding resistance to stress corrosion cracking, making it suitable for harsh working conditions.
2. Mechanical Properties: With a tensile strength of 450-600 MPa and an elongation of approximately 25%-35%, it combines high strength with good ductility, making it easily formable in both hot and cold working.
3. Thermal and Electrical Conductivity: With a conductivity of approximately 10%-15% of pure copper, it offers moderate thermal conductivity and is suitable for applications requiring both heat dissipation and corrosion resistance.
4. Weldability and Processability: It can be joined by brazing, welding, and other methods. After cold working, it can be restored to plasticity through annealing.
Typical Applications
Due to its properties, C72600 white copper is widely used in the following fields:
- Marine Engineering: Ship fittings, desalination equipment, submarine cable sheathing, etc., with excellent seawater corrosion resistance.
- Chemical Equipment: Valves, pumps, and heat exchangers suitable for acidic and alkaline environments.
- Electronics and Electrical: High-precision resistors and connectors, balancing conductivity and oxidation resistance.
- Decoration and Architecture: With its imitation silver appearance and tarnish resistance, it is often used in high-end decorative pieces or architectural hardware.
C72600 white copper achieves a balance of corrosion resistance, strength, and processability through copper-nickel alloying, making it an ideal material for harsh environments such as the marine and chemical industries. It has stable composition and reliable performance, can meet diverse industrial needs, and is a cost-effective special alloy choice.
why choose us
Professional copper pipe supplier
The company has a cluster of leading copper processing production lines in China, including:
German imported precision copper tube production line (annual output of 30,000 tons)
Japanese technology copper foil rolling line (thinnest up to 6μm)
Fully automatic copper bar continuous extrusion line
Intelligent copper sheet and strip finishing mill unit
Digitalized control and management of the whole production process is realized through MES system, and the dimensional accuracy of the products can reach ±0.01mm.
Contact us today for a quotation：sales@gneesteel.com
Packaging and shipping
GNEE offers professional packaging for exported copper pipes. First, we apply anti-rust oil and plastic film to prevent oxidation. Then, we securely strap with steel straps and add corner protectors. Finally, we place the pipes on wooden pallets and reinforce them with iron or wooden boxes, ensuring they are moisture-proof and impact-resistant during ocean transport, while facilitating easy loading and unloading. All packaging meets export standards.
Customer visits
GNEE participated in the exhibition
