CZ136
Manganese is indeed one of the most versatile elements that can be incorporated into copper alloys. Even in small quantities, manganese serves several crucial functions, including deoxidizing the alloy, improving its mechanical strength, and enhancing its ability to be cast. Manganese contributes to achieving a beneficial blend of properties such as ductility, formability, strain hardening, and various strength-related parameters, making it a valuable addition to copper alloys.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 56.00 | 59.00 |
| Pb | – | 3.00 |
| Mn | 0.50 | 1.50 |
| Total Others | – | 0.70 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO BS2872 CZ136 (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 | 380 | – | 20 | – | – |
| 18 | 40 | 350 | – | 25 | – | – | |
| 40 | 75 | 350 | – | 25 | – | – | |
| Hex (A/F) | 3 | 18 | 380 | – | 20 | – | – |
| 18 | 40 | 350 | – | 25 | – | – | |
| 40 | 70 | 350 | – | 25 | – | – | |
| Square (A/F) | 3 | 18 | 380 | – | 20 | – | – |
| 18 | 40 | 350 | – | 25 | – | – | |
| 40 | 60 | 350 | – | 25 | – | – | |
| Rectangle (Thickness) | 3 | 18 | 380 | – | 20 | – | – |
| 18 | 40 | 350 | – | 25 | – | – | |
| 40 | 50 | 350 | – | 25 | – | – |
| Physical Properties | Metric | English |
| Density | 8.40 g/cc | 0.303 lb/in3 |
| CTE, linear | 26.0 ᶙm/m-˚C | 14.4 ᶙin/in-˚F |
| Specific Heat Capacity | 0.380 J/g-˚C | 0.0908 BTU/lb-˚F |
| Thermal Conductivity | 113 W/m-K | 784 BTU-in/hr-ft²-˚F |
| Melting Point | 880-900 ˚C | 1620 – 1650 ˚F |
| Solidus | 880 ˚C | 1620 ˚F |
| Liquidus | 900 ˚C | 1650˚F |
| FABRICATION PROPERTIES | |
| Machinability (CuZn39Pb3 = 100 %) | 80.00% |
| Capacity for Being Cold Worked | Poor |
| Capacity for Being Hot Worked | Equivalent Alloy |
