CZ122 / CW617N - Stamping Brass

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CW617N / CZ122 is classed as stamping brass and is mainly supplied as rod for forging stock although it is also free machining. The material consists mainly of 59% copper 39% zinc with a 2% lead addition that is finely dispersed throughout the microstructure.

The CW617N / CZ122 exhibits an excellent combination of hot working and machining properties and is most commonly utilized for the production of more complex hot pressed components. If sheet material is also required to complete a contract, the equivalent grade for this material would be CW608N / CZ120. This grade is also available in a comprehensive range of thicknesses from Holme Dodsworth stocks. 

Related Specifications

CZ122

CW617N

C37700

CuZn39Pb2

Nominal Composition

Copper                  

56-58.5%

Lead

1.5-2.5

Iron

0.3% max

Zinc

Rem

Total Imps

0.7% max

Key Features

  • Excellent hot forming properties
  • Good corrosion resistance
  • High machinability rating

Typical Physical Properties

Melting Point

895°C 

Density

8.4 g/cm³

Specific Heat

380 J/Kg°K

Thermal conductivity (RT)

117 W/m°K

Thermal expansion coefficient (20-200°C)

20 x 10-6

Electrical conductivity

27% IACS 

Electrical Resistivity

0.064 ohm mm2/m

 Fabrication Properties

Hot Working Temperature Range

650-775°C

Hot Formability

Excellent

Cold Formability                                   

Limited

Machinability rating

(free cutting brass = 100)

85%

Annealing Temp. Range                         

450-600°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                      

Fair

Typical Uses:

 The C617N / CZ122 is utilised for a wide range of hot forged and pressed components including sanitary appliances, door furniture, window fittings taps and valve parts, automotive components, decorative items, brackets, clamps, housing, gears, cams, nuts, clock and watch parts and other components requiring a high degree of precision machining.

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
Registered in England. Company No. 00842702