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EN 1652 CuZn33 R500 – High‑Performance Copper Alloy for Precision Applications

CuZn33 (CW506L) is an unhardenable wrought alloy. High hardness and strength parameter are achievable by cold forming only. Thermal and electrical conductivity are lower than for CuZn30. Corrosion resistance is similar to pure copper. Processing properties: warm forming: good cold forming: very good machinability: moderately hard and soft soldering: very good TIG-welding: good burnishing: very good CuZn33 is used for deep drawing components, metal goods, watch parts, polishing sheet, wire mesh, cooler strips, tubular rivets and as etching brass. For the electrolytically tinned strip the coatings (Sn bright, Sn matt, Sn fuzed, SnPb) are listed by the application (better solderability, better corrosion resistance, reduction of the electrical contact resistance, better appearance) in the DIN EN 14436 : 2004-11 (Table 5)

Properties

General

PropertyTemperatureValue

Density

20.0 °C

8.5 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

112 GPa

Poisson's ratio

20.0 °C

0.34 [-]

Shear modulus

20.0 °C

40 GPa

Tensile strength

20.0 °C

500 MPa

Yield strength Rp0.2

20.0 °C

450 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

1.7E-5 - 2.1E-5 1/K

Typical for Wrought Copper Brass

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

121 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical conductivity

20.0 °C

1.55E+7 - 1.60E+7 S/m

Electrical resistivity

20.0 °C

6.5E-8 Ω·m

Specific Electrical conductivity

28 % IACS

Chemical properties

PropertyValue

Aluminium

0.02 %

Copper

66 - 68.5 %

Iron

0.05 %

Lead

0.05 %

Nickel

0.3 %

Phosphorus

0.2 %

Tin

0.1 %


Metal

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