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CuNiFer 90/10

Cunifer 90/10: the corrosion-resistant alloy for seawater systems

Cunifer is an alloy of copper (Cu), nickel (Ni) and iron (Fe) with outstanding resistance to corrosion and seawater. These properties make it exceptionally well suited to maritime and offshore applications. At JB Tubes we supply a complete range of Cunifer 90/10 tubes, fittings and flanges. Below you can read more about the material, its applications and the products and sizes we offer.

Why choose Cunifer?

Aluminium brass is another alloy known for its resistance to corrosion and seawater; the aluminium it contains adds strength and improves corrosion resistance. Cunifer, however, has some distinct advantages over aluminium brass. It resists not only corrosion but also biological fouling. As a result, Cunifer needs no protective treatment and very little maintenance, which makes it the material of choice wherever reliability and a long service life are critical.

Applications of Cunifer

Cunifer was developed specifically for systems that come into contact with brackish water and seawater. Its high corrosion resistance and minimal biological fouling make it ideal for heat exchangers on ships and in the offshore industry. It is also used to produce Cunifer tubes and piping systems that withstand the harsh conditions at sea.

Our Cunifer product range

Our extensive range includes:

  • Cunifer tubes
  • Cunifer bends
  • Cunifer tees (equal)
  • Cunifer reducers (concentric welding reducers)
  • Cunifer saddles
  • Cunifer collars
  • Cunifer threaded sockets
  • Cunifer plugs
  • Cunifer flanges

With this range, you will always find the right component for your seawater system.

Cunifer dimensions

Our Cunifer products cover a wide range of sizes to suit different requirements:

  • Tubes: diameters from 10 mm to 914 mm, wall thicknesses from 1 mm to 8 mm.
  • Bends: diameters from 20 mm to 610 mm, wall thicknesses from 1 mm to 5 mm.
  • Collars: diameters from 25 mm to 610 mm, wall thicknesses from 1.5 mm to 5 mm.
  • Galvanised slip-on flanges: diameters from 25 mm to 610 mm.
  • Reducers: concentric welding reducers from 20 x 16 mm to 610 x 508 mm.
  • Saddles: from 20 x 20 mm to 610 x 610 mm.
  • Tees: diameters from 20 mm to 610 mm.
  • Plugs: diameters from 16 mm to 57 mm.

For full details of all available sizes, please refer to our product sheets.

DIN standards

Our Cunifer products comply with a number of DIN standards, including:

  • DIN 86019
  • DIN 86037
  • DIN 86087
  • DIN 86088
  • DIN 86089
  • DIN 86090

Items outside our standard range can be manufactured to your specifications.

Order your Cunifer products quickly and easily

If you need a corrosion- and seawater-resistant alloy with minimal maintenance, Cunifer is the answer. Its versatility and the breadth of our product range make it an excellent choice for maritime and offshore projects. For more information or a quotation, please contact us – we will be glad to help. You can also browse our full range of products.

Frequently asked questions about CUNIFER 90/10

What is Cunifer 90/10?
Cunifer is an alloy of copper (Cu), nickel (Ni) and iron (Fe) that excels in corrosion and seawater resistance. The designation 90/10 refers to its composition of approximately 90% copper and 10% nickel, with a small amount of iron added.
What is Cunifer used for?
Cunifer has been specially developed for systems that come into contact with brackish water and seawater. It is used for, among other things, heat exchangers in ships, piping systems and applications in the offshore industry.
What is the difference between Cunifer and aluminium brass?
Both alloys are corrosion and seawater resistant. In addition, Cunifer is resistant to biological fouling, needs no protective treatment and requires hardly any maintenance. This makes it ideally suited where reliability and durability are paramount.
Which Cunifer products are available?
The range consists of Cunifer tubes, bends, tees, reducers (concentric welding reducers), saddles, collars, threaded sockets, plugs and flanges. Items outside the standard range can be custom-produced according to your specifications.
Which sizes of Cunifer tube are available?
Cunifer tubes are available in diameters from 10 mm to 914 mm with wall thicknesses from 1 mm to 8 mm. Bends are available from 20 mm to 610 mm and collars from 25 mm to 610 mm. For all sizes, please refer to the product sheets.
Which standards do Cunifer products comply with?
Cunifer products comply with various DIN standards, including DIN 86019, DIN 86037, DIN 86087, DIN 86088, DIN 86089 and DIN 86090.
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CuNiFer 90/10

CuNiFer 90/10

CuNiFer 90/10

CuNiFer 90/10

Why
choose
JB Tubes?

  1. Always Personalized Tailored Advice

    Our knowledgeable team members will assist you in finding the best solution for your specific needs.

  2. Extensive and Wide Range of Products

    For every project, we have the right tubes and shafts available. We offer various materials and dimensions so you can rely on meeting your exact requirements.

  3. High-Quality hydraulic steel tubes

    Our products are carefully selected and meet high-quality standards, ensuring you can rely on the durability and reliability of our materials.

  4. Fast Delivery by Our Own Delivery Service

    With our own delivery service, we can efficiently and promptly deliver your order to you. This allows you to rely on a smooth logistics experience and continue your projects without delay.