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EN 12166 Grade CuZn39Pb2 H100 – Leaded Brass Alloy Specifications

Material CuZn39Pb2, mat. No. CW612N, is an unhardenable wrought alloy. to the comparable make CuZn39Pb2, mat. No. 2.0380 acc. to DIN 17660 : 1983-12 applies: High hardness and strength parameter are achievable by cold forming only. Thermal and electrical conductivity are lower than for the unleaded brass grade of the same Zn-content. Machinability is improved by Pb-addition. Corrosion resistance to water, several saline solutions and organic liquids is also lower than for unleaded alloys of the same zinc-content. Processing properties: warm forming: very good cold forming: unfavorable machinability: very good hard soldering: moderately soft soldering: very good TIG-welding: unfavorable burnishing: very good Application: For components in precision mechanics, machine and apparatus engineering as well as for circuit boards and clockwerks for watch industry.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

8.4 - 8.45 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

102 GPa

Hardness, Brinell

20.0 °C

100 - 145 [-]

Hardness, Vickers

20.0 °C

100 - 180 [-]

Poisson's ratio

20.0 °C

0.34 [-]

Shear modulus

23.0 °C

40 GPa

Typical for Wrought Copper Brass

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

2E-5 1/K

300.0 °C

2.1E-5 1/K

Melting point

875 - 1075 °C

Typical for Wrought Copper Brass

Specific heat capacity

20.0 °C

377 J/(kg·K)

Thermal conductivity

20.0 °C

109 - 117 W/(m·K)

200.0 °C

134 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical conductivity

20.0 °C

1.39E+7 - 1.40E+7 S/m

200.0 °C

1.10E+7 S/m

Electrical resistivity

20.0 °C

7.1E-8 Ω·m

200.0 °C

9.1E-8 Ω·m

Specific Electrical conductivity

24 % IACS

Chemical properties

PropertyValue

Aluminium

0.05 %

Copper

59 - 60 %

Iron

0.2 - 0.3 %

Lead

1.6 - 2.5 %

Nickel

0.3 %

Tin

0.3 %


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