UNS C51900 R420

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Description

CuSn6 provides an excellent combination of strength, cold formability and hardness. It is wear resistant, has good corrosion resistance and soldering properties. Due to its high strength and good spring properties combined with good machining properties it is used for all kind of springs, Bourdon tubes or flexible metal tubes.

Equivalent Materials

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Eigenschaften

Allgemein

PropertyTemperatureValue

Dichte

23.0 °C

8.8 g/cm³

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Mechanisch

PropertyTemperatureValueComment

Biegefähigkeit 90°, in longitudinaler Richtung

23.0 °C

0 [-]

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r = x t, t <0.5mm

Biegefähigkeit 90°, in transversaler Richtung

23.0 °C

0 [-]

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r = x t, t <0.5mm

Dehnung A50

23.0 °C

15 - 22 %

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Elastizitätsmodul

23.0 °C

102 - 118 GPa

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depending on the condition

Härte, Vickers

23.0 °C

120 - 170 [-]

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Streckgrenze Rp 0,2

23.0 °C

350 MPa

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min.

Zugfestigkeit

23.0 °C

420 - 520 MPa

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Thermisch

PropertyTemperatureValueComment

Koeffizient der thermischen Ausdehnung

100.0 °C

1.8E-5 1/K

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for 20°C to the mentioned temperature

200.0 °C

1.85E-5 1/K

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for 20°C to the mentioned temperature

Spezifische Wärmekapazität

23.0 °C

377 J/(kg·K)

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Wärmeleitfähigkeit

23.0 °C

75 W/(m·K)

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Elektrisch

PropertyTemperatureValueComment

Elektrische Leitfähigkeit

23.0 °C

9.00E+6 - 1.50E+7 S/m

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min.

Specific Electrical conductivity

15.5 % IACS

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min.

Chemical properties

PropertyValueComment

Andere

0 - 0.2 %

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Blei

0 - 0.02 %

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Eisen

0.1 %

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max.

Kupfer

Balance

Nickel

0 - 0.2 %

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Phosphor

0.01 - 0.4 %

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Zink

0 - 0.2 %

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Zinn

5.5 - 7 %

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Technological properties

Property
Application areas

Electrical: Miniaturized Connectors, Contact Springs, Relais Springs, Electrical Flexing Contact Blades, Terminals, Switch Parts, Fuse Clips, Electronic Connectors, Resistance Wire, Electromechanical Spring Components, Electrical Flexing Contact Blades, Wire Brushes, Switch Parts, Electronic and Precision Instrument Parts. Fasteners: Lock Washers, Cotter Pins, Fasteners. Industrial: Bourdon Tube, Bellows, Textile Machinery, Perforated Sheets, Springs, Sleeve Bushing, Clutch Disks, Beater Bar, Chemical Hardware. General: Stamped parts, Connectors, Contact springs, Spring elements, Ultra high strength spring elements, Membranes, Switch elements, Fixed contacts.

Brazing

Good

Cold Forming

Max. 70 % between annealings, excellent

Corrosion properties

CuSn6 has a good resistance to seawater, different agents and industrial atmosphere and has a good resistance to tarnishing. It is in a large extend resistant to pitting corrosion. Even in seawater the laminar attack is higher than localized corrosion.

Heat Treatment

Temper: R420

Hot forming

at 750-850°C, limited

Machining

Rating 20, less suitable

Other

This alloy is in accordance with RoHS 2002/96/CE for electric & electronic equipments and 2002/53/CE for automotive industry.

Plating

Electroplating is excellent

Welding

Gas Shielded Arc Welding: Good, Laser Welding: Good

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