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materials for die casting tooling, pressure die casting, die casting process

26 Sep 2017 - die casting tooling,pressure die casting,die casting process

materials for die casting tooling, pressure die casting, die casting process


Die casting process typically makes use of non-ferrous alloys. The four most common alloys that are die cast are shown below, along with brief descriptions of their properties.


Materials  Properties
Aluminum alloys
  • Low density
  • Good corrosion resistance
  • High thermal and electrical conductivity
  • High dimensional stability
  • Relatively easy to cast
  • Requires use of a cold chamber machine
Copper alloys
  • High strength and toughness
  • High corrosion and wear resistance
  • High dimensional stability
  • Highest cost
  • Low die life due to high melting temperature
  • Requires use of a cold chamber machine
Magnesium alloys
  • Very low density
  • High strength-to-weight ratio
  • Excellent machinability after casting
  • Use of both hot and cold chamber machines
Zinc alloys
  • High density
  • High ductility
  • Good impact strength
  • Excellent surface smoothness allowing for painting or plating
  • Requires such coating due to susceptibility to corrosion
  • Easiest to cast
  • Can form very thin walls
  • Long die life due to low melting point
  • Use of a hot chamber machine


materials for die casting tooling, pressure die casting, die casting process


The selection of a material for die casting tooling is based upon several factors including the density, melting point, strength, corrosion resistance, and cost. The material may also affect the part design. For example, the use of zinc, which is a highly ductile metal, can allow for thinner walls and a better surface finish than many other alloys. The material not only determines the properties of the final casting, but also impacts the machine and tooling. Materials with low melting temperatures, such as zinc alloys, can be die cast in a hot chamber machine. However, materials with a higher melting temperature, such as aluminum and copper alloys, require the use of cold chamber machine. The melting temperature also affects the tooling, as a higher temperature will have a greater adverse effect on the life of the dies.

Alpine Mold is a pressure die casting tooling factory, having specialized in die casting process for 16 years. If you have any need for die casting tooling and products, please feel free to contact me by email kerry@alpinemold.com.


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