CW601N
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 EN12164 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 |
