CuZn5
TOMBAC
Cu94-96 Zn reste
| Chemical composition |
|---|
Cu94-96
Ni0.3 max
ZnBAL
Sn0.1 max
Fe0.05 max
| Alloy name | |
|---|---|
| RLSA no. | 200 |
| EN standard | CW500L |
| DIN standard | 2.0220 |
| UNS no.* | C21000 |
*Unified Numbering System (USA)
Characteristics and main uses
CuZn5 is a reinforced copper alloy in solid solution containing 5% zinc (brass). The color is similar to copper, as is its corrosion resistance. CuZn5 has very good cold formability and is suitable for bending, stamping and other cold forming processes. The alloy can be welded, brazed or soldered. CuZn5 is not as susceptible to stress corrosion cracking as alloys with a higher zinc content. Relaxation properties are excellent up to temperatures of 150°C.
| Physical properties | Units | |
|---|---|---|
| Density (20°C) | 8,86 | Kg/dm³ |
| Melting point | 1050-1065 | °C |
| Longitudinal elasticity modulus | 127 | GPa |
| Thermal conductivity | W/m·K | |
| Electrical conductivity | 32,3 | m/Ω·mm² |
| Electrical resistivity | 0,031 | µΩ·m |
| Linear expansion Coefficient | 17 | 10⁻⁶·K⁻¹ |
| IACS (International Annealed Copper Standard) | 56 | % |
| Poisson's ratio |
| Capabilities | |
|---|---|
| Corrosion resistance | 4 |
| Hot deformation | 2 |
| Cold deformation | 3 |
| Electrodepositing | 4 |
| Diamond cutting | |
| Nitriding | |
| Mechanical polishing | 4 |
| Welding without filler | 3 |
| Brazing | 4 |
1 poor | 2 average | 3 good | 4 very good | - no info
