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Copper-Nickel Alloys Resistance to Corrosion and Biofouling


Copper Nickel Copper Nickel (Cu-Ni) alloys are widely used for marine applications due to their excellent resistance to seawater corrosion, high inherent resistance to biofouling and good fabricability.

They have provided reliable service for several decades whilst offering effective solutions to today's technological challenges.

TABLE 1. Comparison between various specifications of copper-nickel alloy
Maximum except where range given


  90-10

  ISO BS ASTM DIN
  CuNi10FelMn CN 102 C70600 CuNi10Fe
2.0872

Copper
min
max

Rem

Rem

Rem

Rem
Nickel
min
max

9.0
11.0

10.0
11.0

9.0
11.0

9.0
11.0
Iron
min
max

1.2
2.0

1.0
2.0

1.0
1.8

1.0
1.8
Manganese
min
max

0.5
1.0

0.5
1.0

-
1.0

0.5
1.0
Tin
min
max

-
0.02

-
-

-
-

-
-
Carbon 0.05 0.05 0.05* 0.05
Lead 0.03 0.01 0.02* 0.03
Phosphorus - - 0.02* -
Sulphur 0.05 0.05 0.02* 0.05
Zinc 0.5 0.5 0.5* 0.5
Total other
impurities
0.1 0.1
Total impurities - 0.3 - -

  70-30

  ISO BS ASTM DIN

  CuNi30MnlFe CN 107 C71500 CuNi30Fe
2.0882
Copper
min
max

Rem

Rem

Rem

Rem
Nickel
min
max

29.0
32.0

30.0
32.0

29.0
33.0

30.0
32.0
Iron
min
max

0.4
1.0

0.4
1.0

0.4
1.0

0.4
1.0
Manganese
min
max

0.5
1.5

0.5
1.5

-
1.0

0.5
1.5
Tin
min
max

-
0.02

-
-

-
-

-
-
Carbon 0.06 0.06 0.05* 0.06
Lead 0.03 0.01 0.02* 0.03
Phosphorus - - 0.02* -
Sulphur 0.06 0.08 0.02* 0.05
Zinc 0.5 0.5* 0.5
Total other
impurities
0.1 0.1
Total impurities - 0.3 - -

* When required for welding
by Carol A. Powell, Consultant to Nickel Development Institute
Content Copyright of Respective Copyright Holders.
Copper Nickel CuNi alloys are used for marine applications due to their excellent resistance to seawater corrosion, high inherent resistance to biofouling and good fabricability.

JLC Electromet, Jaipur makes lamps components Nickel and nickel alloys for Superalloys, Defence Metals, Import Substitution , Metallurgy. Nickel Alloys in Nickel Wires and Nickel Strips. Spark Plug wires, spark plug profile, spark plug side wire, Lamp materials, Lamp components, Lighting, Bulbs, Tubelights, Dumet, Glass to metal seal, Electrodes. These alloys are used as Manganin, Constantan, Fecral, Kanthal, driverharries, Invar, Monel, Inconel, Nichrome where a higher strength is required compared to pure nickel. They have a wider range of environments such as Bimetal Strips, Welding Rod Wires, Cladded Wires, High Permeability Alloys, where they resist corrosion but in some specialised applications, such as in Metallurgy for Import Substitution, nickel alloys would be superior.

This group of nickel alloys are frequently sold under nickel alloy trade name specifications. Common trade names are Nickel alloy HASTELLOY, INCOLOY, INCONEL, Nickel alloy NICROFER, and NIMONIC. Nickel alloy HASTELLOY is a registered trade name of Haynes Intl. Lead-in-Wire in Nickel alloy INCOLOY, INCONEL, Nickel alloy MONEL and Nickel alloy NIMONIC are registered trade names of the INCO family of companies. Nickel alloy INVAR is a registered trademark of Imphy S.A. Nickel alloy MU-METAL is a registered trademark of Telcon Metals Ltd. nickel alloys NICORROS and Nickel alloy NICROFER are registered tradenames of Krupp UM GmbH Lead Wire nickel alloys alloys beryllium cold junction wires alloy affect copper ohm's law resistance thhn bronze belden wire c36000 ohms law sae 660 acsr conductors ampacity factors american insulated brush wellman its 90 southwire olflex termocoppie xlpe romex conductor okonite cross sectional area chromel thermokoppel c26000 ca360 measurement termocouple termocoppia termopar litz kcmil multiconductor tri rated mineral insulated xhhw alumel west penn 16awg awg18 cupronickel thwn kynar factor ampacities cusn6 brass duralumin zamak temperature cromel nickel direct burial. tefzel c63000 thermo couple esistance phosphorbronze electrons 18awg 12awg metals ohmic zinc its90 insulated factors which affect termocupla aluminium thermibel cl2p 30awg nickel alloys tinned shielded rubadue awg22 awg20 metallurgy wire&cable aluminum unified numbering system cupro composition sheathed high temperature awg16 weico ul1007 lt1025 comtran smelting awg30 cooner and from key components flows through leadwire max6675 shawflex electricity


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