C22000
The captivating golden hue of this metal explains why it’s known as “Jewellery Bronze.” This exquisite brass can be polished and coated with lacquer to showcase its natural color or serve as a foundation for gold plating. Its moderate strength, corrosion resistance, electrical conductivity, and capability to be deep-drawn make C226 an excellent material choice for many design engineers working on functional applications, such as hinges, doorknobs, and specific electrical connectors.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 89.00 | 91.00 |
| Pb | – | 0.05 |
| Fe | – | 0.05 |
| Total Others | – | 0.20 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO ASTM B927 (AS PER TEMPER HO2)
| Range (mm) | From | To | UTS Min (MPa) | PS Min (MPa) | Elongation Min (%) | Hardness Min | Hardness Max |
| Round (Dia) | 6 | 12 | 345 | 205 | 7 | – | – |
| 12 | 25 | 310 | 185 | 10 | – | – | |
| 25 | 75 | 275 | 170 | 12 | – | – | |
| Hex (A/F) | 6 | 12 | 345 | 205 | 7 | – | – |
| 12 | 25 | 310 | 185 | 10 | – | – | |
| 25 | 70 | 275 | 170 | 12 | – | – | |
| Octagon (A/F) | 6 | 12 | 345 | 205 | 7 | – | – |
| 12 | 25 | 310 | 185 | 10 | – | – | |
| 25 | 60 | 275 | 170 | 12 | – | – |
| Physical Properties | |
| Melting Point – Liquidus°F | 1910 |
| Melting Point – Solidus°F | 1870 |
| Density lb/cu in. at 68°F | 0.318 |
| Specific Gravity | 8.8 |
| Electrical Conductivity% IACS at 68°F | 44 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F | 109 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 10.2 |
| Specific Heat Capacity Btu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tension ksi | 17000 |
| Modulus of Rigidity ksi | 6400 |
| Fabrication Properties | |
| Soldering | Excellent |
| Brazing | Excellent |
| Oxyacetylene Welding | Good |
| Gas Shielded Arc Welding | Good |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Not Recommended |
| Seam Weld | Not Recommended |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Good |
| Machinability Rating | 20 |
