C70600 (B10)(Cu90Ni10) copper-nickel alloy is a high-performance alloy with copper and nickel as the main components, which has excellent corrosion resistance, good mechanical properties and processing performance, and is widely used in marine engineering, chemical equipment, aerospace and other fields.
Chemical composition
Copper (Cu): about 90%
Nickel (Ni): about 10%
Iron (Fe): ≤ 1.0%
Manganese (Mn): ≤ 0.5%
Other elements: trace.
Mechanical properties
Yield strength (σ0.2): ≥210 MPa
Tensile strength (σb): ≥485 MPa
Elongation (δ5): ≥40%
Hardness (HB): ≤150.
Corrosion resistance
The outstanding feature of C70600 copper-nickel alloy is its excellent corrosion resistance, especially in seawater, which shows strong corrosion resistance. The corrosion resistance mechanism is mainly attributed to the role of nickel, nickel can form a dense nickel-copper alloy compounds on the surface of the copper matrix, preventing the intrusion of corrosive media.
In addition, the alloy is highly resistant to chlorides, acidic solutions and oxidizing media, making it suitable for use in harsh environments such as chemical equipment, offshore platforms and oil drilling.
Heat Treatment and Processing Properties
Heat treatment:
Solid solution treatment: optimize the strength and hardness of the alloy by heating and rapid cooling.
Annealing treatment: Reduces internal stresses and improves plasticity and machinability.
Machinability:
Good cold workability and weldability, suitable for fine molding.
Special Properties
Low magnetic properties: C70600 alloy has a low magnetic permeability (about 1.0003) and almost no magnetic response, making it suitable for use in environments where magnetic interference needs to be avoided, such as electronic equipment and precision instrument housings.
High thermal conductivity: its thermal conductivity is about 30 W/m-K, with high thermal conductivity, suitable for heat dissipation equipment and high temperature environment.
Application areas
Marine engineering: used for manufacturing ship shells, seawater pipelines, offshore platform equipment, etc.
Chemical equipment: suitable for manufacturing corrosion-resistant reactors, pipes and valves.
Aerospace: for manufacturing high temperature resistant parts and precision instruments.
Electronic equipment: as materials for heat sinks, cables and equipment shells.
Summarize
C70600 copper-nickel alloy has become an indispensable and important material in modern industry by virtue of its excellent corrosion resistance, high strength and good processing performance. Its wide application in the fields of marine, chemical, aerospace and electronic equipment fully reflects its excellent performance and wide application prospects.
