EN 1652 Grade CuSn6 R350

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Description

CuSn6, mat. No. CW425K, is comparable to the DIN-make CuSn6, mat. No. 2.1020, acc. to DIN 17662 : 1983-12. Properties of the CuSn-alloy are predominantly determined by the tin-content. Tensile strength, yield point and hardness increase according to the rising cold forming grade, elongation after fracture decreases. Electrical and thermal conductivity are lower than for pure copper. Very high resistance to corrosion, particularly to atmospheric influences, seawater, sulfite liquor, carbonated and salted mine water. The alloys are stress corrosion-proof. Processing properties: warm forming: medium cold forming: very good machinability: medium hard soldering: good soft soldering: good gas shielded welding: good burnishing: good Appliction: For all types of springs, especially in electrical industry, for connectors, hose and spring tubes, fabric and screening wires, gong bars. Further application in paper, cellulose and chemical industry, in shipbuilding and machine engineering. For the electrolytically tinned strip the coatings (Sn bright, Sn matt, Sn fuzed, SnPb) are listed by the application (better solderability, better corrosion resistance, reduction of the electrical contact resistance, better appearance) in the DIN EN 14436 : 2004-11 (Table 5)

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

8.8 - 8.82 g/cm³

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Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

118 GPa

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Elongation

20.0 °C

55 %

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Elongation A50

20.0 °C

45 %

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Poisson's ratio

20.0 °C

0.34 [-]

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Tensile strength

20.0 °C

350 - 420 MPa

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Yield strength Rp0.2

20.0 °C

300 MPa

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Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

100.0 °C

1.8E-5 1/K

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200.0 °C

1.85E-5 1/K

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650.0 °C

2.22E-5 1/K

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800.0 °C

2.18E-5 1/K

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Specific heat capacity

20.0 °C

377 J/(kg·K)

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Thermal conductivity

20.0 °C

75 W/(m·K)

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200.0 °C

98 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical conductivity

20.0 °C

9.00E+6 S/m

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200.0 °C

7.80E+6 S/m

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Electrical resistivity

20.0 °C

1.11E-7 Ω·m

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200.0 °C

1.28E-7 Ω·m

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Specific Electrical conductivity

16 % IACS

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Chemical properties

PropertyValue

Iron

0.1 %

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Lead

0.02 %

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Nickel

0.2 %

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Phosphorus

0.01 - 0.4 %

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Tin

5.5 - 7 %

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Zinc

0.2 %

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