C26800
CuZn33 is a brass alloy that seamlessly blends exceptional cold forming capabilities with solid mechanical strength. It boasts favorable hot forming characteristics and excels in soldering and brazing applications. Thanks to its remarkable deep drawing properties, CuZn33 is often referred to as “deep-draw” brass.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 64.00 | 68.50 |
| Pb | – | 0.09 |
| Fe | – | 0.05 |
| Total Others | – | 0.30 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO ASTM B927 (AS PER TEMPER HO2)
| Range (Inch) | From | To | UTS Min (ksi) | PS Min (ksi) | Elongation Min (%) | Hardness Min | Hardness Max |
| Round (Dia) | 0.059 | 0.500 | 53 | 33 | 10 | – | – |
| 0.500 | 1.000 | 48 | 30 | 13 | – | – | |
| 1.000 | 2.953 | 43 | 28 | 15 | – | – | |
| Hexagon (A/F) | 0.118 | 0.500 | 53 | 33 | 10 | – | – |
| 0.500 | 1.000 | 48 | 30 | 13 | – | – | |
| 1.000 | 2.756 | 43 | 28 | 15 | – | – | |
| Square (A/F) | 0.118 | 0.500 | 53 | 33 | 10 | – | – |
| 0.500 | 1.000 | 48 | 30 | 13 | – | – | |
| 1.000 | 2.362 | 43 | 28 | 15 | – | – | |
| Rectangle (Thickness) | 0.118 | 0.500 | 53 | 33 | 10 | – | – |
| 0.500 | 1.000 | 48 | 30 | 13 | – | – | |
| 1.000 | 1.969 | 43 | 28 | 15 | – | – |
| Range (Inch) | From | To | UTS Min (ksi) | PS Min (ksi) | Elongation Min (%) | Hardness Min | Hardness Max |
| Round (Dia) | 1.5 | 12 | 365 | 230 | 10 | – | – |
| 12 | 25 | 330 | 205 | 13 | – | – | |
| 25 | 75 | 295 | 195 | 15 | – | – | |
| Hexagon (A/F) | 3 | 12 | 365 | 230 | 10 | – | – |
| 12 | 25 | 330 | 205 | 13 | – | – | |
| 25 | 70 | 295 | 195 | 15 | – | – | |
| Square (A/F) | 3 | 12 | 345 | 170 | 10 | – | – |
| 12 | 25 | 310 | 115 | 20 | – | – | |
| 25 | 50 | 275 | 105 | 20 | – | – | |
| Rectangle (Thickness) | 3 | 12 | 345 | 170 | 10 | – | – |
| 12 | 25 | 310 | 115 | 20 | – | – | |
| 25 | 50 | 275 | 105 | 20 | – | – |
| PHYSICAL PROPERTIES | |
| Melting Point – Liquidus°F | 1710 |
| Melting Point – Solidus°F | 1660 |
| Density lb/cu in. at 68°F | 0.306 |
| Specific Gravity | 8.47 |
| Electrical Conductivity % IACS at 68°F | 27 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F | 67 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 11.3 |
| 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 | Poor |
| Machinability Rating | 30 |
