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EN 12164 R360 CuZn39Pb3 Brass – Unhardenable Alloy with High Strength and Improved Machinability

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

-195.0 °C

108 GPa

-100.0 °C

106 GPa

20.0 °C

96 - 105 GPa

50.0 °C

100 GPa

100.0 °C

93 GPa

150.0 °C

91 GPa

200.0 °C

89 GPa

250.0 °C

83 GPa

Elongation

20.0 °C

20 %

Elongation A11.3

20.0 °C

15 %

Shear modulus

23.0 °C

40 GPa

Typical for Wrought Copper Brass

Tensile strength

20.0 °C

340 - 360 MPa

Yield strength Rp0.2

20.0 °C

120 - 320 MPa

Yield strength Rp1.0

20.0 °C

140 MPa

50.0 °C

140 MPa

100.0 °C

137 MPa

150.0 °C

137 MPa

200.0 °C

132 MPa

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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