EN 12164 Grade CuZn40Mn1Pb1 R440

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Description

CuZn40Mn1Pb1 (CW720R former identification: CuZn40MnPb) is an unhardenable copper alloy. High hardness and strength parameter are achievable by cold forming only. Manganes increases corrosion resistance and sliding qualities. Improved machinability by Pb-addition. Processing properties: warm forming: good cold forming: unfavorable machinability: good hard soldering: moderately soft soldering: very good TIG-welding: unfavorable burnishing: very good Application for roller bearing cages and screw machine products.

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

8.1 - 8.3 g/cm³

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Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

95 GPa

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Elongation

20.0 °C

18 - 20 %

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Elongation A10

20.0 °C

15 %

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Elongation A100

20.0 °C

8 - 10 %

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Elongation A11.3

20.0 °C

15 %

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Shear modulus

20.0 °C

36 GPa

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Tensile strength

20.0 °C

440 - 540 MPa

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Yield strength Rp0.2

20.0 °C

250 - 300 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

200.0 °C

1.9E-5 1/K

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Melting point

875 - 1075 °C

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Typical for Wrought Copper Brass

Specific heat capacity

20.0 °C

377 J/(kg·K)

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Thermal conductivity

20.0 °C

67 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical conductivity

20.0 °C

8.70E+6 S/m

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Electrical resistivity

20.0 °C

1.15E-7 Ω·m

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Chemical properties

PropertyValue

Aluminium

0.2 - 0.6 %

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Copper

57 - 59 %

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Iron

0.3 - 0.5 %

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Lead

1 - 2 %

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Manganese

0.4 - 1.8 %

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Nickel

0.3 - 1 %

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Silicon

0.1 - 0.4 %

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Tin

0.3 - 0.5 %

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