CW604N
CW604N takes the crown as the standard for machining, scoring a perfect 100% on the machining index. These alloys are equally adept at hot stamping, especially when the forged components undergo extensive post-forging machining. It’s the top choice for applications requiring minimal cold working, such as knurling. Plus, its remarkable ductility makes it the ideal material for crafting wires, rods, and sections.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 62.00 | 64.00 |
| Pb | 0.10 | 0.80 |
| Fe | – | 0.10 |
| Sn | – | 0.20 |
| Ni | – | 0.30 |
| Al | – | 0.50 |
| Total Others | – | 0.20 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO EN1652 (AS PER TEMPER R370)
| Range (mm) | From | To | UTS Min (N/mm²) | UTS Max (N/mm²) | PS Min | Elongation Min (%) | Hardness Min (HRB) | Hardness Max (HRB) |
| Round (Dia) | 1.5 | 6 | 370 | 440 | – | 19 | – | – |
| PHYSICAL PROPERTIES | |
| Melting Point – Liquidus°F | 1700 |
| Melting Point – Solidus°F | 1650 |
| Density lb/cu in. at 68°F | 0.306 |
| Specific Gravity | 8.47 |
| Electrical Conductivity % IACS at 68°F | 26 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F | 67 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 11.3 |
| Specific Heat Capacity Btu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tension ksi | 15000 |
| Modulus of Rigidity ksi | 5600 |
| FABRICATION PROPERTIES | |
| Technique | Suitability |
| Soldering | Excellent |
| Brazing | Good |
| Oxyacetylene Welding | Fair |
| Gas Shielded Arc Welding | Fair |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Fair |
| Seam Weld | Not Recommended |
| Butt Weld | Fair |
| Capacity for Being Cold Worked | Good |
| Capacity for Being Hot Formed | Poor |
| Machinability Rating | 60 |
