What Is a Copper-Nickel 70/30 Tube And Different Types Of Copper Nickel Tubing
June 05 13:58:08, 2025
Munot Metalloys stands out as a leading manufacturer, supplier, and exporter of Copper Nickel 70/30 Tubes. Our product line encompasses a wide range of materials, including Copper, Aluminum, Copper Nickel, Brass, and Arsenic Brass. These materials are crafted into various specifications, sizes, grades, and dimensions to cater to the diverse needs of numerous industries.
Our offerings find applications across a broad spectrum of fields such as air conditioning and refrigeration systems, electrical systems, heat exchangers, condensers, automobiles, construction projects, water and gas management, electrical engineering, marine engineering, earthing systems, heating solutions, solar panels, and more.
## Copper Nickel 70/30 Tube
Copper-Nickel, commonly referred to as Cupronickel, is an alloy composed of 60-90% copper. Its exceptional resistance to saltwater corrosion makes Copper Nickel 70/30 Tubes ideal for use in heat exchangers, condensers, and cryogenic applications. The alloy's ability to maintain ductility under high temperatures and resist corrosion ensures its suitability in demanding environments. Additionally, these tubes excel in withstanding high mechanical stress in elevated temperatures, making them perfect for oil refineries and cement industries.
## Features of Copper Nickel 70/30 Tube
Copper-Nickel alloys come in two primary compositions: 70/30 and 90/10. Copper-Nickel 70/30 is renowned for its robust resistance to seawater corrosion, thanks to the substantial quantities of manganese and iron present in its composition.
This alloy retains remarkable ductility even at cryogenic temperatures, making it invaluable for cryogenic processing and storage equipment. Its combination of high ductility and thermal conductivity at extremely low temperatures renders it ideal for heat exchangers in freezing facilities.
Despite its high copper content, Copper-Nickel exhibits a silvery chrome appearance. Its superior corrosion resistance makes it a preferred choice for seawater systems and marine equipment, including piping, heat exchangers, and condensers. High-quality propellers, shafts, and hulls are also often manufactured using this material. Additional applications include military, chemical, petrochemical, and electrical equipment.
### Areas of Application for Copper-Nickel Alloys
- Desalination units
- Hydraulic lines
- Fish cages for aquaculture
- Heat exchangers and condensers
- Seawater pipework
- Offshore firewater systems
- Tubes for power plants and ships
- Pumps, Valves, sheathing, and fittings for ship hulls
### Types of Copper Nickel Tube
- Copper-Nickel alloy is celebrated for its balanced strength, workability, formability, and weldability. Since it contains 30% nickel, the copper alloy C715 is also called Nickel-Copper 70/30. Nickel-Copper 70/30 tubing is exceptionally suited for high-temperature and high-pressure applications, as well as scenarios involving high speeds and turbulent flows.
- The low iron concentration (up to 0.5%) in the C715 alloy enhances its resistance to general corrosion and stress corrosion cracking, making it ideal for marine and industrial settings.
- Copper-Nickel Tubes 90/10 are forged copper-nickel alloys optimized for marine environments, containing 10-30% nickel. A small amount of iron and manganese is added to boost corrosion resistance. This grade is widely favored due to its excellent ductility and durability. Copper-Nickel offers superior welding and fabrication qualities. It inherently resists biofouling. Its exceptional properties make it suitable for use in low to very low temperatures. It boasts unparalleled antibacterial characteristics, capable of eliminating 99% of bacteria within two hours.
In conclusion, Copper-Nickel 70/30 Tubes represent a versatile and reliable solution for a multitude of industrial applications, ensuring durability, performance, and cost-effectiveness across sectors.