FORGING BRASS
Metals
Brass
Bronze
DESCRIPTION
CZ129
SPEC SHEET
Brass is an alloy mainly consisting of copper and zinc. Brass alloys can be easily shaped and are available in various colors. Brass has high thermal conductivity. CZ129 forging brass alloys have good forgeability. They are available in the form of rod.
The following datasheet gives details about CZ129 brass alloys.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 58.50 | 61.00 |
| Pb | 0.80 | 1.50 |
| Fe | – | 0.20 |
| Total Others Excl. Fe | – | 0.50 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO BS2874 (AS PER TEMPER M)
| Range | From | To | UTS Min (N/mm²) | PS Min | Elongation Min (%) | Hardness Min | Hardness Max | |
| Round (Dia) | 1.5 | 18 | 380 | – | 25 | – | – | |
| 18 | 40 | 380 | – | 25 | – | – | ||
| 40 | 75 | 350 | – | 28 | – | – | ||
| Hex (A/F) | 3 | 18 | 380 | – | 25 | – | – | |
| 18 | 40 | 380 | – | 25 | – | – | ||
| 40 | 70 | 350 | – | 28 | – | – | ||
| Square (A/F) | 3 | 18 | 380 | – | 25 | – | – | |
| 18 | 40 | 380 | – | 25 | – | – | ||
| 40 | 60 | 350 | – | 28 | – | – | ||
| Rectangle (Thickness) | 3 | 18 | 380 | – | 25 | – | – | |
| 18 | 40 | 380 | – | 25 | – | – | ||
| 40 | 50 | 350 | – | 28 | – | – | ||
| PHYSICAL PROPERTIES | |
| Melting Point – Liquidus°F | 1640 |
| Melting Point – Solidus°F | 1620 |
| Density lb/cu in. at 68°F | 0.305 |
| Specific Gravity | 8.44 |
| 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) | 11.5 |
| 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 | Poor |
| Capacity for Being Hot Formed | Excellent |
| Forgeability Rating | 100 |
| Machinability Rating | 80 |
TYPICAL USES
- Builders Hardware
- Building
- Consumer
- Electrical
- Industrial