The attractive golden hue of this metal makes it easy to understand how it received the name Jewellery Bronze. This beautiful brass can be buffed and lacquered to display its natural colour, or used as a base for gold plating. Its moderate strength, resistance to corrosion, electrical conductivity and ability to be deep drawn make C226 a great material option for many design engineers working on functional applications including hinges, doorknobs, and select electrical connectors.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 86.00 | 89.00 |
| Pb | – | 0.05 |
| Fe | – | 0.05 |
| Total others | – | 0.20 |
| Zn | Remainder |
MECHANICAL PROPERTIES ACCORDING TO ASTM B134 (AS PER TEMPER HO2)
| Range (mm) | From | To | UTS Min (MPa) | UTS Max (MPa) | PS Min | Elongation Min (%) | Hardness Min | Hardness Max |
| Round (Dia) | 1.5 | 6 | 455 | 530 | – | – | – | – |
| Hex (A/F) | 3 | 6 | 455 | 530 | – | – | – | – |
| Square (A/F) | 3 | 6 | 455 | 530 | – | – | – | – |
| PHYSICAL PROPERTIES |
| Melting Point – Liquidus°F | 1895 |
| Melting Point – Solidus°F | 1840 |
| Density lb/cu in. at 68°F | 0.317 |
| Specific Gravity | 8.78 |
| Electrical Conductivity% IACS at 68°F | 40 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F | 100 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 10.3 |
| Specific Heat Capacity Btu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tension ksiModulus of Elasticity in Tension ksi | 17000 |
| Modulus of Rigidity ksi | 6400 |
| FABRICATION PROPERTIES |
| Technique | Suitability |
| Soldering | Excellent |
| Brazing | Excellent |
| Oxyacetylene Welding | Good |
| Gas Shielded Arc Welding | Good |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Fair |
| Seam Weld | Not Recommended |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Good |
| Machinability Rating | 30 |
TYPICAL USES
- Architecture
- Consumer
- Electrical
- Fasteners
