CW624N
- CW624N
- CuZn43Pb2AL
- C380
Chemical composition (%) DIN EN 12167
|
|
Cu |
Zn |
Al |
Pb |
Fe |
Ni |
Sn |
Mn |
Others |
|
min. |
55 |
Rem. |
0,05 |
1,6 |
- |
- |
- |
- |
- |
|
max. |
57 |
- |
0,5 |
3,0 |
0,3 |
0,3 |
0,3 |
- |
0,2 |
CuZn43Pb2Al is a 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 CuZn43Pb2Al 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 propertiesAt room temperature | |
Density | 8,4 g/cm3 |
Heat conductivity | 126 W//(m*K) |
Coefficient of thermal expansion | 21,6 10-6/K |
Melting range | 870-885ºC |
Shapping | |
Machinability | Very Good |
Cold working | Fair |
Hot working | Very good |
Hot working temperature | 630-730ºC |
Heat Treatment | |
Soft annealing | 430-550ºC |
Stress relieving | 200-300ºC |
Connecting | |
Resistance welding butt | Fair |
Brazing | Fair |
Hard Soldering | Fair |
Soft Soldering | Very Good |
Other Welding methods | Not recommended |
Surface treatment | |
Mechanical polishing | Very Good |
Electrolytic polishing | Poor |
