CuSn3Zn9
CHRYSOCALE
Cu reste Sn1.5-3 Zn7.5-10 Pb0.03 max
| Chemical composition |
|---|
CuBAL
Zn7.5-10
Pb0.03 max
P0.35 max
Sn1.5-3.0
Fe0.05 max
| Alloy name | |
|---|---|
| RLSA no. | 520 |
| EN standard | CW454K |
| DIN standard | |
| UNS no.* | C42500 |
*Unified Numbering System (USA)
Characteristics and main uses
CuSn3Zn9 has excellent cold-forming properties, good conductivity combined with high strength and hardness. Corrosion resistance, particularly in seawater and industrial atmospheres.
Spring properties are good.
| Physical properties | Units | |
|---|---|---|
| Density (20°C) | 8,75 | Kg/dm³ |
| Melting point | 1010-1030 | °C |
| Longitudinal elasticity modulus | 112 | GPa |
| Thermal conductivity | W/m·K | |
| Electrical conductivity | >11.76 | m/Ω·mm² |
| Electrical resistivity | <0.085 | µΩ·m |
| Linear expansion Coefficient | 18,3 | 10⁻⁶·K⁻¹ |
| IACS (International Annealed Copper Standard) | 28 | % |
| Poisson's ratio | 0,34 |
| Capabilities | |
|---|---|
| Corrosion resistance | 2 |
| Hot deformation | 1 |
| Cold deformation | 4 |
| Electrodepositing | 4 |
| Diamond cutting | 4 |
| Nitriding | |
| Mechanical polishing | 4 |
| Welding without filler | 3 |
| Brazing | 4 |
1 poor | 2 average | 3 good | 4 very good | - no info
