Why make car models use zinc alloy?

Zinc-alloy is the best quality of the materials commonly used in car models. Will you wonder why it is not other alloys but zinc-alloy?
1.    The low melting point, melts at 385 ℃, easy to die casting molding.
2.    Good casting performance can die casting complex shape, thin wall precision parts, casting surface smooth, conducive to the performance of details.
3.    lighter than other metals
4.    Surface treatment: plating, spraying, and painting
5.    Good mechanical properties and wear resistance at room temperature

6.     When melting and die-casting, it does not absorb iron, does not corrode the mold, does not stick to the mold, and has strong oxidation resistance

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