Description
CW601N is a ductile alloy prized for its excellent machinability, as well as its ability to be bent and cold headed with ease. This makes it a highly suitable choice, especially for crafting bicycle spoke nipples.
Chemical Composition
| Elements | Min (%) | Max (%) |
| Cu | 62.00 | 63.50 |
| Pb | 1.60 | 2.50 |
| Sn | – | 0.10 |
| Fe | – | 0.10 |
| AL | – | 0.05 |
| Ni | – | 0.30 |
| Total Others | – | 0.10 |
| Zn | Remainder |
Mechanical Properties According To CW601N (As Per Temper 400)
| Range (mm) |
From |
To |
UTS Min (N/mm²) |
PS Min (N/mm²) |
Elongation Min (%) |
Hardness Min |
Hardness Max |
| Round (Dia) |
2 |
20 |
400 |
200 |
12 |
– |
– |
| Hex (A/F) |
2 |
25 |
400 |
200 |
12 |
– |
– |
| Square (A/F) |
2 |
25 |
400 |
200 |
12 |
– |
– |
| PHYSICAL PROPERTIES |
| Density (g/cm³) |
8.46 |
| Electrical Conductivity % IACS at 68°F |
26 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F |
67 |
| Specific Heat Capacity (kJ/kgK) |
0.377 |
| Modulus of Elasticity in (GPa) |
105 |
| Coefficient of thermal expansion at 20 ˚C (10-6/K)
|
20.4 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) |
885 – 910 °C |
| Hot working |
700 – 800 °C |
| Soft annealing |
450 – 650 °C |
| Thermal stress relieving |
200 – 300 °C |
| FABRICATION PROPERTIES |
| Machinability |
85% |
| Cold formability |
good |
| Hot formability |
good |
| Resistance welding |
fair |
| Oxyacetylene welding |
not recommended |
| Inert gas shield arc welding |
not recommended |
| Brazing |
fair |
| Soldering |
Excellent |
