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cupro nickel

Offering you a complete choice of products which include cupro nickel tubes, cupro nickel 70/30, cupro nickel 90/10 and cupro nickel flanges.

Cupro Nickel Tubes

Cupro Nickel Tubes
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Approx. Rs 480 / Unit
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Product Details:
Unit Length12 m
Single Piece Length>36 meter
Materialcupro nickel
Usage/ApplicationGas Handling

We are experienced manufacturers and exporters of (70 & 30) Cupronickel Tubes. It is manufactured using gradient material, in compliance with industrial norms. It is 70% copper 30% nickel alloy. It is used in heat exchangers, high capacity power plants, ship building, condensers, distiller tubes, evaporators. It is attested on various platforms and meeting them and meeting them as per the client’s specifications.



  • Reliable
  • Durable
  • Excellent quality
  • 100% client satisfaction
  • Highly efficient

Product Details:
StandardBS 2871 PART 3ASTM B-111DIN 1785NFA 51 102JIS H3300IS 1545
SymbolCN 107C 71500CuZn30 Mn 1 Fe
CuZn30 Mn 1 FeC 7150CuZn30 Mn 1 Fe
Total Impurities Max.0.30-0.10.30Rem (Cu+Ni+Fe+Mn 99.5 Min.)
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Cupro Nickel 70/30

Cupro Nickel 70/30
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Approx. Rs 400 / Unit
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Product Details:
Size/Diameter4 inch
Single Piece Length6 meter
Unit Length12 m

70/30 is a 70% copper, 30% nickel alloy with additions of iron and manganese. These elemental additions make it somewhat more resistant to corrosion and erosion and with slightly improved strength level than 90/10, making it suitable for more demanding applications. In particular, its corrosion resistance is notably improved in high-velocity waters (up to 4.5m/s) and polluted seawater.

70/30 is readily cold worked, fabricated and welded without any special material considerations. The most popular specifications covering this alloy are the CN107 and C71500 designations, although the Defence Standard DEF STAN 02-879 Annex B (superseding DEF STAN 02-780 and NES 780) offers tighter controls on impurities and mechanical properties together with a mandatory impact value.

Related Specifications of 70/30
  • CN107
  • C71500
  • C71520
  • CW354H
  • DEF STAN 02-879 Annex B
  • DEF STAN 02-780
  • NES780
  • BS2874
  • EN 12164
  • ASTM B151
  • DGS320
  • 2.0882
  • CuNi30Mn1Fe
Nominal Composition of 70/30

Cu rem, Ni 30%, Fe 0.7%, Mn 1.0%

Mechanical Properties of 70/30
Ultimate Tensile Strength (N/mm²)Proof Stress (N/mm²)Elongation (%)Hardness (HB)
310 2780-120
Key Features of 70/30
  • Excellent corrosion and pitting resistance in marine environments
  • Good strength and toughness
  • Resistance to biofouling
  • Readily weldable and fabricated
Applications of 70/30

Offshore & marine | Salt water flanges, salt water piping and pipe fittings, valve bodies, sea water intakes, pipe fittings, water boxes, propeller sleeves, pump bodies and parts

Chemical processing | Heat exchanger and cooling plant, evaporator tubes, distiller tubes, refrigerator and condenser components

Other | Welding backing rings, flexible metal hose, weld wire and boiler parts

Columbia Metals - a leading supplier of 70/30

With decades of experience and a huge range of stock, Columbia Metals is an industry leader in the supply of 70/30 and other high quality specialist engineering alloys.

To buy or learn more about 70/30 contact us now, or fill in the enquiry form on the right hand side and we will be in touch shortly.

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Cupro Nickel 90/10

Cupro Nickel 90/10
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Approx. Rs 1,000 / Unit
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Product Details:
Size/Diameter>4 inch
Single Piece Length3 meter
Unit Length12 m

90/10 cupronickel is a 90% copper, 10% nickel alloy that also contains small but important additions of iron and manganese to enhance overall strength corrosion resistance. This, combined with high ductility and toughness, makes it a popular grade for marine, architectural and industrial applications.

90/10 alloy offers designers and specifiers excellent resistance to stress corrosion, erosion, and biofouling in seawater and brackish water, excellent fabrication and welding properties, a high resistance to hydrogen embrittlement and the retention of mechanical properties down to cryogenic temperatures.

The material is released to the Defence Standard DEF STAN 02-879 Annex C, which supersedes both DEF STAN 02-779 and NES 779.

The most popular specifications in Europe and America are C70600, CN102 and CW352. These grades are most commonly specified within the marine, offshore, chemical, petrochemical and shipbuilding industries and are also widely used for handling seawater in all types of heat exchanger and cooling plant.

90/10 has undergone tests that indicate it has excellent antimicrobial properties. It is capable of killing 99.9% of a wide range of organisms within two hours, including MRSA, E.coli, influenza A (H1N1) and clostridium difficile. This has created a higher demand for the alloy in application areas such as hygienic and sanitary environments in hospitals, kitchens, nursing homes and other healthcare environments.

Related Specifications of 90/10
  • CN102
  • C70600
  • C70610
  • CW352H
  • DEF STAN 02-879 Annex C
  • DEF STAN 02-779
  • NES 779
  • BS2870
  • BS2874
  • ASTM B151
  • EN 12163
  • 2.0872
  • NF A51-115
  • CuNi10Fe1Mn
Nominal Composition of 90/10

Cu rem, Ni 10.0%, Fe 1.5%, Mn 0.7%

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Cupro Nickel Flanges

Cupro Nickel Flanges
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Approx. Rs 500 / Unit
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Product Details:
Size>30 inch

We have carved a niche amongst the most trusted names in this business, engaged in presenting standard quality assortment of Cupro Nickel Flanges MGF to our appreciated customers. This Cupro Nickel Flanges MGF is extensively demanded in different other industries. This product is checked for quality under different parameters, which are set by the industry. This product is designed by our trained professionals using latest techniques and premium quality material. Our product is available in reliable in nature, robust in construction and known for their long functional life.




  • High strength
  • Excellent performance
  • Efficient working
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Find UsNirmal Bothra (Owner) NRK Overseas
C-7, 1st Floor, Shanti Bhuvan, Behind Post Office, V. P. Road, Girgaon, Mumbai - 400004, Maharashtra, India
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