data sheets zl2

ZL2 Datasheet

Zinc Alloy ZA2 – with a high tensile strength, ZL2 is a Zinc based alloy which can be used for hot chamber pressure diecast components or gravity casting. Used for small castings where hardness and high tensile strength are essential, the high copper content of this alloy can reduce the dimensional stability.

ZL 2 also suffers from a severe loss of ductility during ageing and should be avoided if post forming of the casting is envisaged. When designing a stressed component using ZL2 further reference should be made to the alloys properties, at elevated temperatures, after natural or artificial ageing and the alloys creep properties.

Alloy Designation ZnAL4Cu3 Colour code White + Green
Short designation ZL 2 Alloy Number. ZL0430


Supplied in diecast form. As Cast Aged
Tensile strength 360 MPa 331 MPa
Yield strength 283 MPa
Impact strength 47 Joules 68 Joules
Elongation 50mm 7% 2%
Shear strength 317 MPa 214
Compressive yield strength 269 MPa 183 MPa
Fatigue Strength 59
Hardness BHN 500Kg 100 max 98 max


Melting range 379 - 390 degC
Density 6.7 g / cm 3
Coefficient of Thermal expansion 27.4 um/m deg C
Thermal Conductivity 105 W/m deg C
Electrical Conductivity 25 % IACS
Electrical Resistivity 6.3694 u ohm-cm at 20 degC

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