CW622N

CW622N

  • CW622N
  • CuZn43Pb1AL
  • C38000
Chemical composition (%) DIN EN 12167

 

Cu

Zn

Al

Pb

Fe

Ni

Sn

Mn

Others

min.

55

Rem.

 0,05

 0,8

-

-

-

-

-

max.

57

-

0,5

1,6

0,3

0,3

0,3

-

0,2

CuZn43Pb1Al is copper-zinc-lead alloy with a duplex α- and β-phase structure containing a dispersion of fine lead particles, and Aluminum to tarnish resistance of the alloy and is highly suitable for hot formed parts. It is a very good alloy for use in profiles which provide complex shapes or very thin walls, Handrails, Decorative Profiles, Standard Angles, Standard T sections, Standard Channels, Trim & Flooring Profiles and Ironmongery Profies.

Due to the alloying of Al CuZn43Pb1Al has a golden yellow colour. Common name is Architectural “Bronze” also know as Architectural Brass
This group of alloys is used for production of profiles by hot extrusion. Aluminium imparts a golden lustre, avoiding need for further polishing. The alloys with more than 1.6% Pb have very good machinability.
Generally supplied as extruded / as manufactured.

Physical properties

At room temperature

Density

8,4 g/cm3

Electrical conductivity

16,4 MS/m

 

28 % I.A.C.S

Heat conductivity

126 W//(m*K)

Heat capacity

377 J/(kg*K)

Coefficient of thermal expansion

21,6 10-6/K

Young’s modulus

84 GPA

Melting range

870-885ºC

 

Shapping

Machinability 

Good

Cold working

Fair

Hot working

Very good

Hot working temperature

625-725ºC

 

Heat Treatment

Soft annealing 

425-550ºC

Stress relieving

250-350ºC

 

Connecting

Resistance welding  butt

Fair

Brazing

Fair

 

Surface treatment

Mechanical polishing

Very Good

Electrolytic polishing 

Poor

 

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