Copper Nickel Alloys Grades 70/30, 90/10 we supply - GOGA STAINLESS has been created to promote and distribute for the worldwide shipbuilding and offshore industries copper nickel pipes and fittings.

We have access to many grades in Copper Nickel and the following are just two of the general grades available. Please contact us for any specific grade you require.

Copper Nickel 90/10

Copper Nickel 90/10 is the most commonly used wrought copper alloy for marine engineering and can be found in seawater systems for naval, commercial shipping and the oil & gas markets due to its good strength, corrosion resistance and inherent resistance to biofouling in salt water environments. Randhir Metal offers the full spectrum of product types in this alloy including pipe & fittings in both Metric and EMMUA size ranges catering for all applications. Comprising 90% copper and 10% nickel, this grade also has small additives of iron and manganese which enhances its corrosion resistance.

Together with a high ductility and toughness puts this in high demand for more standard uses in the marine, chemical, offshore and petrochemical industries. Within this grade, popular specifications include C70600 and CN102.

Copper Nickel 70/30

This is a 70% copper and 30% nickel alloy grade which has added iron and manganese. It is used for more demanding applications than 90/10 material. It is resistant to corrosion and offers increased strength over 90/10. Copper Nickel 70/30 is stronger than the more common copper nickel 90/10 and is able to withstand corrosion at higher velocities in marine applications, making it the favourable choice in submarine systems. Randhir Metal carry the India's largest range of product in this alloy and are the only stockholder of DEFSTAN-02 879 metric tube specification released for use on UK naval vessels. The most popular specifications covering this alloy are CN107 and C71500 designations. The naval specification, NES 780 (or DEFSTAN -02-780) gives tighter controls on impurities and mechanical properties along with a required impact value. Used for marine flanges and fittings, valve bodies, pumps, chemical engineering components.

Type of Copper Nickel Butt weld Fittings

Copper Nickel Butt weld Fittings Applications:

Electronics
Transport and traffic
Pulp and paper industry
Medicine
Fertilizers
Valve & Pumps
Petrochemical
Architecture and construction
Aerospace
Nuclear Power
Energy industry
Chemicals industry
Nickel Alloy in Pulp and Paper
Motor industry
Food and drink

Key Properties of Cupronickel Fitting Products

• Low corrosion in seawater/salt water applications
• High resistance to stress corrosion cracking (SCC) in seawater
• High general resistance to crevice corrosion and stress corrosion due to chlorides
• Strong pitting resistance
• Ease of welding and fabrication

Applications – Copper Nickel Fittings

• Shipbuilding – Special Marine Vessels
• Offshore – Various Navy projects
• Desalination Plants
• Condensers
• Power Plants
• Desalination plants
• Oil refineries
• Chemical process industries

Copper Pipe Fittings/Copper Nickel Pipe Fittings Production Range

Buttweld Copper Nickel Fittings / Copper Pipe Fittings

Seamless/ Welded 100% Radiography Tested

High Pressure Forged Copper Nickel Fittings / Copper Nickel Pipe Fittings

Threaded and Socket Weld Fittings

Copper Nickel Flanges / Copper Nickel Flanges

Forged and Plate Flanges

PROPERTIES OF COPPER NICKEL BUTT WELD FITTINGS

CHEMICAL PROPERTIES

Designations in Standards for 90-10 and 70-10 Copper-Nickel Alloys

MECHANICAL PROPERTIES

PHYSICAL PROPERTIES

The list of products under Copper Nickel Butt Weld Fittings includes: