LEADED BRASS
Metals
Brass
Bronze
DESCRIPTION
CZ131
SPEC SHEET
CZ131 is a material which has been successfully used in automotive industries. It has both good machining and good cold working properties.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 61.00 | 63.00 |
| Pb | 1.50 | 2.50 |
| Fe | – | 0.20 |
| Total Others Excl Fe | – | 0.50 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO BS2874 (AS PER TEMPER M)
| Range (mm) | From | To | UTS Min (N/mm²) | PS Min | Elongation Min | Hardness Min | Hardness Max |
| Round (Dia) | 1.5 | 18 | 350 | – | 22 | – | – |
| 18 | 350 | 350 | – | 25 | – | – | |
| 40 | 75 | 350 | – | 28 | – | – | |
| Hex (A/F) | 3 | 18 | 350 | – | 22 | – | – |
| 18 | 40 | 350 | – | 25 | – | – | |
| 40 | 70 | 350 | – | 28 | – | – | |
| Square (A/F) | 3 | 18 | 350 | – | 22 | – | – |
| 18 | 40 | 350 | – | 25 | – | – | |
| 40 | 60 | 350 | – | 28 | – | – | |
| Rectangle (Thickness) | 3 | 18 | 350 | – | 22 | – | – |
| 18 | 40 | 350 | – | 25 | – | – | |
| 40 | 50 | 350 | – | 28 | – | – |
| PHYSICAL PROPERTIES | |
| Melting Point | 885° |
| Density | 8.50g/cm3 |
| Electrical Resistivity | 0.066 x 10-6Ωm |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F | 115 W/m.K |
| 105 Gpa | 105 Gpa |
| FABRICATION PROPERTIES | |
| Technique | Suitability |
| Hot Formability | Good |
| Cold Formability | Good |
| Cold Reduction Between anneals | 50% |
| Machinability rating (free cutting brass = 100) | 75% |
| Soldering | Excellent |
| Brazing | Good |
| Not recommended | Not recommended |
| Gas – Shielded are welding | Resistance welding : Spot and Seam |
| Resistance welding : Spot and Seam | Not recommended |
| Butt Welding | Fair |
TYPICAL USES
- Fasteners
- Rivets
- Domestic appliances
- Automotive engineering
- Hose fittings
- Intricate parts such as clock components