LEADED BRASS
Metals
Brass
Bronze
DESCRIPTION
CZ132
SPEC SHEET
CZ132 a dezincification-resistant machining brass, is particularly suitable for use in warm, acidic waters. This material passes the dezincification test according to ISO 6509. For the manufacture of hot-stamped parts C35330 with better hot-working properties is recommended. To achieve dezincification resistance a heat treatment may be necessary after hot working.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | Remainder | |
| Pb | 1.70 | 2.80 |
| Sn | – | 0.20 |
| Fe | – | 0.20 |
| As | 0.08 | 0.15 |
| Total Others | – | 0.50 |
| Zn | 35.00 | 37.00 |
MECHANICAL PROPERTIES ACCORDING TO BS: 2874 (AS PER TEMPER M)
| Range (mm) | From | To | UTS Min (N/mm²) | PS Min (N/mm²) | Elongation Min (%) | Hardness Min | Hardness Max |
| Round (Dia) | 6 | 18 | 380 | – | 20 | – | – |
| 18 | 40 | 350 | – | 22 | – | – | |
| 40 | 75 | 350 | – | 25 | – | – | |
| Hex (A/F) | 6 | 18 | 380 | – | 20 | – | – |
| 18 | 40 | 350 | – | 22 | – | – | |
| 40 | 70 | 350 | – | 25 | – | – | |
| Square (A/F) | 6 | 18 | 380 | – | 20 | – | – |
| 18 | 40 | 350 | – | 22 | – | – | |
| 40 | 60 | 350 | – | 25 | – | – | |
| Rectangle (Thickness) | 6 | 18 | 380 | – | 20 | – | – |
| 18 | 40 | 350 | – | 22 | – | – | |
| 40 | 50 | 350 | – | 25 | – | – |
| PHYSICAL PROPERTIES | |
| Melting Point | 910°C |
| Density | 8.43 g/cm³ |
| Specific Heat | 377 |
| Thermal conductivity (20°C) | 117 W/m°K |
| Thermal expansion coefficient (20-200°C) | 20.7 x 10-6 per °C |
| Electrical conductivity | 26 % IACS |
| Electrical Resistivity | 0.066 ohm mm²/m |
| Modulus of Elasticity | 106 KN/mm² |
| FABRICATION PROPERTIES | |
| Hot Working Temperature Range | 800-850°C |
| Hot Formability | Very good |
| Cold Formability | Good |
| Machinability rating (free cutting brass = 100) | 75 % |
| Annealing Temp. Range | 450-650°C |
| Stress Relieving Temp. Range | 250-350°C |
| Soldering | Excellent |
| Brazing | Good |
| Oxy-acetylene welding | Not recommended |
| Gas-shielded arc welding | Not recommended |
| Resistance welding | Not recommended |
TYPICAL USES
- Plumbing