Q
What is the difference between die casting& plastic injection moulding?
A
Plastic Injection Molding and aluminum die casting are similar in a lot of ways:
  • Both require a mold or tool to produce parts.
  • The tooling cost is very similar in both industries.
  • Both processes inject material into a mold to make parts.
  • Both processes can make hundreds or thousands of parts every day.
Plastic Injection Molded Parts 
Advantages
  • Plastic parts are produced at a lower temperature than aluminum parts, plastic melts at only a few hundred degrees Fahrenheit
  • Plastic Parts weigh less than aluminum die casting parts.
Disadvantages:
  • Plastic is not typically biodegradable
  • Plastic parts require metal inserts to hold a thread for screws.
  • Plastic does not block EMI/RF waves
  • Plastic Parts are not as strong.
Aluminum Die Casting Parts
Disadvantages
  • Aluminum parts weigh more than plastic.
  • Aluminum parts are produced in only one color and need paint or powder coat for color.
Advantages
  • Aluminum naturally shieds EMI/RF waves.
  • Holes can be directly threaded into the parts.
  • Features can be machined into aluminum.
  • Aluminum has great thermal transference properties.
  • Aluminum is a natural conductor of electricity.
  • Aluminum material is environmentally friendly and can be recycled easily when done.
  • All aluminum alloys (360, 380, 383, and 413) are made from recycled materials.
  • Aluminum parts are stronger than plastic

Previous:Why and where to use plastic injection moulds?

Next:What's the common parts in plastic Injection Moulding Setup?