Zinc Die Casting Alloys – ZP 8 (UNS Z35636)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Other Designations


Die cast zinc alloys have a variety of applications, from bat fittings to electronic components. Die castings dominate the total volume of alloys produced by the metal working industry. Zinc offers a number of advantages such as hardness, durability, self-lubrication and strength.

Different kinds of finishes like gold, weathered bronze, steel and leather can be done on zinc die casts. Zinc has a high density; hence fixtures made of zinc die casts are much more durable when compared to their plastic counterparts.

Zinc die casts are of four types, namely, ZP3, ZP5, ZP2 and ZP8. Zinc die casts are manufactured by the hot chamber process in accordance with the European Standard – EN12844. ZP3 and ZP5 are the widely used zinc casts. The ZP die cast series are mainly composed of aluminum and zinc. The alloy number that is used to denote ZP8 alloy is ZP0810.

This datasheet will look into the chemical composition, properties and applications of zinc die casting alloy – ZP8.

Chemical Composition

The chemical composition of zinc die casting alloy – ZP8 is given in the following table.

Element Content (%)
Aluminum, Al 8-8.8
Copper, Cu 0.8-1.3
Magnesium, Mg 0.06
Nickel, Ni 0.02
Silicon, Si 0.045
Iron, Fe 0.015-0.03
Cadmium, Cd 0.006
Lead, Pb 0.006
Tin, Sn 0.003
Zinc, Zn Remainder

Physical Properties

The following table discusses the physical properties of zinc die casting alloy- ZP8.

Properties Metric Imperial
Density 6.7 g/cm3 0.227 lb/in3

Mechanical Properties

The mechanical properties of zinc die casting alloy – ZP8 are tabulated below.

Properties Metric Imperial
Tensile strength 387 MPa 56 ksi
Yield strength 319 MPa 46 ksi
Elongation at break 3.40% 3.40%
Poisson’s ratio 0.29 0.29

Other Designations

  • Equivalent material to zinc die casting alloy – ZP8 is ASTM B240/ASTM B669 – ZA8.


The zinc die casting alloy – ZP8 is used in the following applications:-

  • Door, window and bath fittings
  • Office equipment
  • Automotive equipment
  • Electronic components.

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