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EN 12166 Grade CuZn39Pb3 (H135) – Leaded Brass Alloy Specifications

Material CuZn39Pb3, mat. No. CW614N, is an unhardenable wrought alloy. to the comparable make CuZn39Pb3, mat. No. 2.0401 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 unleaded brass 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: Main alloy of the brass materials for machining on automats. Use for all types of form turning parts, in precision engineering as well as in watch and electrical industry.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

8.4 - 8.47 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

96 - 97 GPa

Hardness, Brinell

20.0 °C

135 [-]

Hardness, Vickers

20.0 °C

145 [-]

Shear modulus

23.0 °C

40 GPa

Typical for Wrought Copper Brass

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

1.93E-5 1/K

200.0 °C

2.1E-5 1/K

300.0 °C

2.14E-5 1/K

800.0 °C

2.47E-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

-200.0 °C

50 W/(m·K)

20.0 °C

113 - 123 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical conductivity

20.0 °C

1.46E+7 - 1.50E+7 S/m

200.0 °C

1.20E+7 S/m

Electrical resistivity

20.0 °C

6.6E-8 Ω·m

200.0 °C

8.3E-8 Ω·m

Specific Electrical conductivity

25 - 25.2 % IACS

Chemical properties

PropertyValue

Aluminium

0.05 %

Copper

57 - 59 %

Iron

0.3 %

Lead

2.5 - 3.5 %

Nickel

0.3 %

Tin

0.3 %


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