Copper Nickel 70/30 / NES 780 Copper Alloy

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Description

2.0882 (CuNi30Mn1Fe) 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. It shows the following features and properties:


  • Excellent corrosion and pitting resistance in marine environments
  • Good strength and toughness
  • Resistance to biofouling
  • Readily weldable and fabricated
  • Equivalent Materials

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    Eigenschaften

    Allgemein

    PropertyTemperatureValue

    Dichte

    23.0 °C

    8.95 g/cm³

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    Mechanisch

    PropertyTemperatureValue

    Dehnung

    23.0 °C

    27 - 30 %

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    Elastizitätsmodul

    23.0 °C

    152 GPa

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    Härte, Brinell

    23.0 °C

    80 - 120 [-]

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    Schubmodule

    23.0 °C

    56 GPa

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    Streckgrenze Rp 0,2

    23.0 °C

    125 MPa

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    Zugfestigkeit

    23.0 °C

    310 - 330 MPa

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    Thermisch

    PropertyTemperatureValue

    Koeffizient der thermischen Ausdehnung

    23.0 °C

    1.6E-5 1/K

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    Spezifische Wärmekapazität

    23.0 °C

    377 J/(kg·K)

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    Wärmeleitfähigkeit

    23.0 °C

    29 W/(m·K)

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    Elektrisch

    PropertyTemperatureValue

    Elektrische Leitfähigkeit

    23.0 °C

    2.90E+6 S/m

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    Specific Electrical conductivity

    5 % IACS

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    spezifischer Widerstand

    23.0 °C

    3.4E-7 Ω·m

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    Chemical properties

    PropertyValue

    Eisen

    0.7 %

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    Kupfer

    Balance

    Mangan

    1 %

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    Nickel

    30 %

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    Technological properties

    Property
    Application areas

    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

    Cold Forming

    Good cold formability

    Corrosion properties

    Excellent corrosion and pitting resistance in marine environments

    General machinability

    Easily machined, Machinability rating: 20

    Hot forming

    Good hot formability with hot working temperature between 925-1025°C.