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EN 12163 CuNi12Zn24 H090 – High-Strength, Corrosion-Resistant Alloy

Material CuNi12Zn24, mat. No. CW403J is an alloy of high strength and hardness. To the comparabel DIN-mark CuNi12Zn24, mat. No. 2.0730, acc. to DIN 17663 : 1983-12 applies: Strength is further increasable due to the high strain hardening capability. The material does not embrittle at low temperatures. Low electrical and thermal conductivity. The alloy is non-magnetic, corrosion resistance is better than for pure copper. Processing properties: warm forming: moderately cold forming: very good machinability: moderately hard and soft soldering: very good TIG-welding: very good burnishing: very good Application: In electrical engineering and electronics for springs, contacts, membranes as well as in precision engineering and in equipment manufacturing. In food industry, for musical instruments, glasses frames, safety keys as well as in construction trade for paneling, show-cases and stairrails.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

8.67 - 8.7 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

125 GPa

Hardness, Brinell

20.0 °C

90 - 130 [-]

Hardness, Vickers

20.0 °C

90 - 135 [-]

Poisson's ratio

20.0 °C

0.34 [-]

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

300.0 °C

1.65E-5 1/K

Melting point

875 - 1135 °C

Typical for Wrought Copper Nickel Silver Grade

Specific heat capacity

20.0 °C

380 J/(kg·K)

Thermal conductivity

20.0 °C

42 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical conductivity

20.0 °C

4.40E+6 S/m

Specific Electrical conductivity

8 % IACS

Chemical properties

PropertyValue

Copper

63 - 66 %

Iron

0.3 %

Lead

0.03 %

Manganese

0.5 %

Nickel

11 - 13 %

Tin

0.03 %


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