CW614N
CW614N, classified as Free cutting brass, represents a notably enhanced variation of 60/40 brass, showcasing outstanding free cutting characteristics. It finds application in the high-volume fabrication of brass components where achieving maximum output and extended tool longevity is essential, and where there is no subsequent need for cold forming after the machining process.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 57.00 | 59.00 |
| Pb | 2.50 | 3.50 |
| Fe | – | 0.30 |
| Sn | – | 0.30 |
| Ni | – | 0.30 |
| Al | – | 0.05 |
| Total Others | – | 0.20 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO EN12164 (AS PER TEMPER R430)
| Range (mm) | From | To | UTS Min (N/mm²) | PS Min (N/mm²) | Elongation Min (%) | Hardness Min | Hardness Max | |
| Round (Dia) | 2 | 40 | 430 | 220 | 10 | – | – | |
| Hex (A/F) | 3 | 35 | 430 | 220 | 10 | – | – | |
| Square (A/F) | 3 | 35 | 430 | 220 | 10 | – | – | |
| Rectangle (Thickness) | 3 | 40 | 430 | 220 | 10 | – | – | |
| PHYSICAL PROPERTIES | |
| Melting Point – Liquidus°F | 1630 |
| Melting Point – Solidus°F | 1610 |
| Densitylb/cu in. at 68°F | 0.306 |
| Specific Gravity | 8.47 |
| Electrical Conductivity% IACS at 68°F | 28 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 71 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 11.6 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 14000 |
| Modulus of Rigidityksi | 5300 |
| FABRICATION PROPERTIES | |
| Technique | Suitability |
| Soldering | Excellent |
| Brazing | Good |
| Oxyacetylene Welding | Not Recommended |
| Gas Shielded Arc Welding | Not Recommended |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Not Recommended |
| Seam Weld | Not Recommended |
| Butt Weld | Fair |
| Capacity for Being Cold Worked | Poor |
| Capacity for Being Hot Formed | Excellent |
| Machinability Rating | 90 |
