ZL3 is a pressure die casting zinc base alloy which conforms to BS EN 1774.
Application Pressure Diecasting
ZL3 is a general-purpose alloy and is primarily used for producing castings for a variety of applications on a hot chamber pressure die casting machine. The alloy’s mechanical and physical properties make it ideal for use in castings for the engineering and automotive industry, household equipment and utensils, office equipment, builders hardware, locks, toys, giftware etc. ZL3 is easily machined, buffed, polished, lacquered and electroplated for decorative or functional purposes.
When designing a stressed component using ZL3 further reference should be made to the alloys properties, at elevated temperatures, after natural or artificial ageing and the alloys creep properties.
| Alloy Designation | ZnAL4 | Colour code | White + Yellow |
| Short designation | ZL 3 | Alloy Number. | ZL0400 |
MECHANICAL PROPERTIES
| Supplied in diecast form. | As Cast | Aged |
| Tensile strength | 283 MPa | 241 MPa |
| Yield strength | 221 MPa | – |
| Impa ct strength | 58 Joules | 56 Joules |
| Elongation 50mm | 10% | 16% |
| Shear strength | 214 MPa | – |
| Compressive yield strength | 413 MPa | – MPa |
| Fatigue Strength | 48 | – |
| Hardness BHN 500Kg | 82 max | 72 max |
PHYSICAL PROPERTIES
| Melting range | 381 - 387 degC |
| Density | 6.7 g / cm 3 |
| Coefficient of Thermal expansion | 27.4 um/m deg C |
| Thermal Conductivity | 113 W/m deg C |
| Electrical Conductivity | 27 % IACS |
| Electrical Resistivity | 6.3694 u ohm-cm at 20 degC |
