Alloys of primarily zinc with small amounts of copper, aluminium, and magnesium are useful in die casting as well as spin casting, especially in the automotive, electrical, and hardware industries. These alloys are marketed under the name Zamak. An example of this is zinc aluminium. The low melting point together with the low viscosity of the alloy makes the production of small and intricate shapes possible. The low working temperature leads to rapid cooling of the cast products and therefore fast assembly is possible. Another alloy, marketed under the brand name Prestal, contains 78% zinc and 22% aluminium and is reported to be nearly as strong as steel but as malleable as plastic. This superplasticity of the alloy allows it to be molded using die casts made of ceramics and cement. COUNT 5
QSN1 Aside from die casting, what are alloys of zinc mixed with copper, aluminium and magnesium used for? ANS1 spin casting QSN2 Alloys of zinc mixed with copper, aluminium and magnesium are marketed as what? ANS2 Zamak QSN3 What is possible to produce thanks to the low melting point and low viscosity of zinc aluminium alloy? ANS3 small and intricate shapes QSN4 What brand name of alloy is supposed to be as strong as steel while still being malleable as plastic? ANS4 Prestal QSN5 What is used to mold Prestal? ANS5 die casts made of ceramics and cement.