Copper-nickel alloys are ideal for marine uses such as seawater pipework or desalination units because they are highly resistant to seawater flow and hardly susceptible to the attachment of marine organisms. Nickel improves the corrosion resistance and strength of copper without a loss of ductility. These Tubes are often used for electrical and thermal applications because of the material’s high electrical conductivity, malleability, and toughness. By comparing different types of copper-nickel tubing you can understand what to expect when it comes to performance. Copper and nickel is a coinage material that has been in use for centuries. undefined The article defines the different types of copper-nickel tubing and the strength and properties of each.

What is Copper-Nickel 70/30 Tubing?

Copper-nickel 70/30 tubing is a type of copper tube that runs at a 70% copper and 30% nickel mixture. It is sometimes referred to as a Type K tube. Copper-Nickel Tubing comes in a range of different sizes and shapes to suit applications. All copper-nickel tubing is manufactured from a material that is known as tubular metal cladding. The outer layer of the copper-nickel tube consists of an alloy consisting of 70% copper and 30% nickel, whereas the core is usually made from a purer copper or purer nickel tube. Copper-nickel tubing is also known as Cu-Ni. The copper and the nickel react with the oxygen in the air to create a barrier that protects the copper from corrosion. The copper-nickel tube is a type of high-temperature tubing that can withstand temperatures up to 1100 degrees Fahrenheit.

Features of Copper Nickel 70/30 Tube 

Copper-nickel alloys are of two kinds that incorporate 70/30 and 90/10. Copper-Nickel 70/30 is exceptionally impervious to seawater consumption because of the presence of huge measures of manganese and iron. 

Cupronickel is a metal that is used in cryogenic applications. At the point when utilized in cryogenic preparation and capacity hardware, its mix of high flexibility maintenance and warm conductivity at extremely low temperatures makes it ideal for heat exchangers in freezing offices. 

Cupronickel has a gleaming chrome tint regardless of its high copper fixation. In view of its incredible erosion opposition, copper-nickel is utilized in seawater frameworks just as in marine hardware including funneling, heat exchangers, and condensers. Likewise, great propellers, shafts, and frames are regularly produced using this material. Military, synthetic, petrochemical and electrical hardware applications are a portion of different uses for this material.

What are the Different Types of Copper Nickel Tubing?

  • The Copper-Nickel alloy is known for its moderate strength, functionality, formability, and weldability. Since it contains 30% nickel, the copper amalgam C715 is otherwise called nickel-copper 70/30. Nickel-Copper 70/30 tubing is appropriate for high temperature and tension applications just as high velocities and tempestuous streams. 
  • The C715 alloy’s low iron concentration (up to 0.5%) gives protection from general consumption and extraordinary pressure erosion breaking, making it ideal for use in marine and modern applications. 
  • Copper-Nickel Tubes 90/10 are produced copper-nickel alloy ideal for the marine climate as they contain 10-30% nickel. Likewise, a little measure of iron and manganese are added to further develop erosion opposition. It is a famous grade in light of its incredible malleability and strength. Cupro Nickel offers exceptional welding and assembling characteristics. It has an implicit biofouling obstruction. It has a few amazing properties that make it ideal for use in low to exceptionally low temperatures. It has antibacterial attributes that are top notch. It can take out close to 100% of microscopic organisms in two hours.

Copper-nickel alloys are used in the following areas:

  • 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

Selecting the right copper-nickel tubing material

There are a number of different types of copper-nickel tubing and the copper and nickel percentages will vary depending on which type you select. Copper-nickel tubing is the most widely used type of copper-nickel tube. It is ideal for high-temperature uses, such as in steam boilers and pressure vessels. It must be rated for temperatures up to 1550 degrees Fahrenheit (870 degrees Celsius) The type of copper-nickel tube you choose should be based on the equipment you are making. If it is a brake or gearbox, the copper-nickel tubing must have good corrosion resistance. The tube should also have an inside diameter that is large enough to allow for proper installation but not so large that it limits speeds or forces your machine into high-pressure areas.


It is important to know the differences between copper-nickel tubing in order to purchase them correctly. Copper-nickel tubing can come in different types, so it is important to be able to distinguish between them. Different types of copper-nickel tubing have different purposes, so it is important to make sure you are purchasing the types that are best for your project.

Amardeep steel helps their customers know the right  Copper-Nickel Tubing and which is the most affordable option for copper plumbing. Copper-Nickel 70/30 Tube is a high-quality copper alloy that provides an excellent combination of strength and durability with the right balance of flexibility and resistance to corrosion.

Plates & Sheets Products

Inconel ProductsASTM B168 Inconel 600 Sheet / UNS N06600 Plate | Inconel 625 Plate / UNS N06625 Sheets | Inconel 601 Plate / UNS N06601 Sheets Incoloy ProductsDIN 2.4858 Incoloy 825 Plate / UNS N06600 Sheet | Incoloy 800 Plate / UNS N08800 Sheet | Incoloy 800H Plate / UNS N08810 Sheet | Incoloy 800HT Plate / UNS N08811 Sheet | Hastelloy Products: Hastelloy C276 Plate Supplier | Monel Products: Monel 400 Plate / ASTM SB127 UNS N04400 Sheet | Nickel AlloyNickel 200 Plate, Nickel N02200 Sheet Stockist | Nickel 201 Plate, Nickel N02201 Sheet Supplier | Brass & Bronze ProductsNaval Brass Plate Stockist | Aluminum Bronze Plate/ Sheet Manufacturer | Nickel Aluminum Bronze Sheet/Plate | Copper Nickel ProductsCopper Nickel 70/30 Plate/ C17500 Cu-Ni Sheet | Copper Nickel 90/10 Plate, C70600 Cu-Ni 90/10 Sheet Stockist in USA | Stainless Steel 253MA Products: Stainless Steel 253 MA Sheets | Duplex And Super Duplex products: Super Duplex Steel UNS S32750 Plate | Duplex Steel S31803 Plate/ Sheet Supplier | Duplex Steel S32205 Plate/ Sheets Supplier | Sanicro 28 Plate Products: Sanicro 28 Plate/Sheet Supplier | Corten Steel Products: ASTM A242 Type 1 Corten Steel Plate | Corten A588 Grade A Steel Plate | Corten A588 Grade B Steel Plate | Corten A Steel Plates & Sheets | Corten Steel B Plate | Corten Steel S355JOWP Plates | Corten Steel S355J2G1W Plates/Sheets | Corten Steel S355J2G2W Plate | Corten Steel S355J2W Plates | Corten Steel S355J2W+N Plate | Corten Steel S355JOWP+N Plates Manufacturer | Corten Steel S355K2G1W Plates/Sheets | Corten Steel S355K2G2W Steel Plate

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Tubes products

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