Current Status, Characteristics, and Advantages of Zinc Alloy Die Casting

Current Status of Zinc Alloy Die Casting

In the wave of today's booming manufacturing industry, the zinc alloy die casting market occupies a unique and important position in China, this industrial hotspot. In recent years, the scale of China's zinc alloy die casting market has continued to expand, becoming a core force in the global zinc alloy die casting field with its vast manufacturing base, continuously growing consumer demand, and increasingly advanced die casting technology.

Differences Between Zinc Alloy Die Casting and Aluminum Alloy Die Casting

Zinc alloy has a low melting point, melting at about 400 degrees Celsius, good castability, easy die-casting molding, can easily manufacture various styles and shapes, saving a large amount of machining procedures, low casting cost, and easily electroplated with excellent post-electroplating results. However, its wear resistance and corrosion resistance are not as good as those of aluminum alloys, and it typically discolors after a period of use. It also ages easily, swells and deforms, and even becomes brittle and cracks.

The hardness and tensile strength of zinc alloy are higher than those of aluminum alloy, with zinc alloy hardness ranging from 60 to 140 and tensile strength from 260 to 440; while aluminum alloy hardness ranges from 45 to 90 and tensile strength from 120 to 290. However, the use of zinc alloy is limited by temperature and cannot be used in excessively high or low temperature (below 0°C) conditions; only at room temperature can it maintain good mechanical properties.

Advantages of Zinc Alloy Die Casting

• Relatively high specific gravity, providing weight and a sense of quality, with greater strength compared to plastic injection molding.
  

  
  

• Good casting performance, capable of die-casting complex shapes and thin-walled precision parts with smooth casting surfaces.

  
  

• Can undergo various surface treatments such as electroplating, spraying, painting, polishing, and grinding.

  
  

• Does not absorb iron, does not corrode the die, and does not stick to the mold during melting and die-casting.

  
  

• Has good room temperature mechanical properties and wear resistance.

  
  

• Low melting point, melting at 385°C, making it easy to die-cast.