CZ129 / CW611N - Bending Brass

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CZ129 / CW611N is a 60/40 low leaded brass that is similar to muntz metal but with a fine dispersion of lead particles. It offers excellent hot working properties and very good cold formability and machinability.

Known as a bending brass the CZ129 / CW611N grade also offers a good strength, ductility and general corrosion resistance. This combination of properties is ideal for components that require hot forging or upset forging followed by some machining.

Related Specifications

CZ129

C37000

CW611N

CuZn39Pb1

Nominal Composition

Copper                  

59.0-60.0%

Lead            

0.80-1.60%

Nickel          

0.30% max

Iron             

0.20% max

Aluminium     

0.05% max

Tin              

0.20% max

Zinc             

Remainder

Total Others  

0.20% max

Key Features

  • Good hot and cold forming properties
  • Good Corrosion resistance

Typical Physical Properties

Melting Point

920°C                    

Density

8.41 g/cm³

Specific Heat 

377 J/Kg°K

Thermal conductivity (RT)

121 W/m°K

Thermal expansion coefficient (20-200°C)

20.9 x 10-6

Electrical conductivity

26% IACS

Youngs Modulus

97 GPa

Fabrication Properties

Hot Working Temperature Range

700-750°C

Hot Formability

Excellent

Cold Formability

Good

Machinability rating

(free cutting brass = 100)

60%

Annealing Temp. Range

450-650°C

Stress Relieving Temp. Range

250-350°C

 Joining Methods

Soldering

Excellent

Brazing                                               

Good

Oxy-acetylene welding

Not recommended

Gas-shielded arc welding

Not recommended

Resistance welding:   Spot and Seam

Not recommended

                             Butt

Not recommended

Typical Uses:

The C611N / CZ129 is a standard bending brass which can be readily hot and cold formed or riveted for a variety of applications including architectural, decorative and industrial applicatons.

This technical information is given by Holme Dodsworth Metals without charge and the user shall employ such information at their own discretion and risk. For more detailed technical advice on temper selection, fabrication, joining, machining, physical and mechanical data please contact us as space does not permit the listing of every feature of the material.

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Holme Dodsworth Metals Limited.
59/69 Heaton Park Road.
Newcastle Upon Tyne NE6 1SQ
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