Jun 24, 2025 Leave a message

What Is The Copper Nickel 90/10 alloy

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 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.

1.What Is The 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

2.What is the Nominal Composition of 90/10?

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

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3.what is the Mechanical Properties of 90/10?

Ultimate Tensile Strength (N/mm²) Proof Stress (N/mm²) Elongation (%) Hardness (HB)
280 105 27 70-120

4.what is the Key Features of 90/10?

High ductility and toughness

Excellent resistance to erosion and corrosion in seawater

Inherent resistance to biofouling

Excellent fabrication and welding properties

Retention of mechanical properties down to cryogenic temperature

5.what is the Applications of 90/10?

Offshore & marine | Salt water pipes and fittings, hot water tanks, salt water baffles, propeller sleeves, valve and pump components, flanges, boat hulls, marine fittings and marine hardware

Chemical processing | Heat exchanger and cooling plant, evaporator tubes, pump and valve trim

Other | Power steering tube, brake lines, condenser plates, pressure vessels and distiller tubes

 

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