C37000
C37000, classified as Engraving brass, are 60/40 alpha-beta brass alloys infused with lead to enhance free machining characteristics. It’s important to note that they are not suitable for acid etched work, as the single phase alpha brasses are more appropriate for such applications.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 59.00 | 62.00 |
| Pb | 0.8 | 1.50 |
| Fe | – | 0.15 |
| Total Others | – | 0.40 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO BS2874 (AS PER TEMPER M)
Mechanical Property requirement, if any, are to be established by agreement between the manufacturer and the purchaser.
| PHYSICAL PROPERTIES | |
| Melting Point – Liquidus°F | 1650 |
| Melting Point – Solidus°F | 1630 |
| Density lb/cu in. at 68°F | 0.304 |
| Specific Gravity | 8.41 |
| Electrical Conductivity % IACS at 68°F | 27 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F | 69 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 11.6 |
| 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 | 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 | Fair |
| Capacity for Being Hot Formed | Excellent |
| Machinability Rating | 70 |
