CW508L
CW508L, commonly known as yellow brass, boasts a copper content of no less than 62%. Within the realm of cold forming processes, CuZn37 takes center stage as the primary brass alloy. While other brasses with reduced zinc content might exhibit improved cold forming properties, CuZn37 maintains its status as the most widely employed alloy for several compelling reasons.
On one hand, its cost-effectiveness is undeniable, as zinc is more economically viable compared to copper. Additionally, the forming characteristics of this alloy align seamlessly with the requirements of numerous applications. As a result, CW508L stands as a reliable and versatile choice for a wide range of cold forming needs.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 62.00 | 64.00 |
| Pb | – | 0.10 |
| Fe | – | 0.10 |
| Sn | – | 0.10 |
| Ni | – | 0.30 |
| Al | – | 0.05 |
| Total Others | – | 0.10 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO EN12165 (AS PER TEMPER H070)
| Range (mm) | From | To | UTS Min | PS Min | Elongation Min | Hardness Min (HB) | Hardness Max (HB) |
| Round (Dia) | 8 | 75 | – | – | – | 70 | 170 |
| Hex (A/F) | 8 | 70 | – | – | – | 70 | 170 |
| Square (A/F) | 8 | 60 | – | – | – | 70 | 170 |
| PHYSICAL PROPERTIES | |
| Melting Point – Liquidus°F | 1680 |
| Density lb/cu in. at 68°F | 0.305 |
| Specific Gravity | 8.44 |
| Electrical Conductivity % IACS at 68°F | 27.6 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F | 67 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 11.4 |
| 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 | Excellent |
| Oxyacetylene Welding | Good |
| Gas Shielded Arc Welding | Fair |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Good |
| Seam Weld | Not Recommended |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Fair |
| Machinability Rating | 35 |
