What is the difference between metal materials and plastics for MN MODEL MN82  parts?

MN MODEL MN82 RC CAR parts metal materials: usually have a higher density, so the parts tend to be heavier. Have excellent electrical and thermal conductivity. Strength, hardness and toughness are usually high, and can withstand greater external forces and impacts. After long-term use, surface corrosion or wear may occur due to oxidation.

MN MODEL MN82 RC CAR parts plastic: low density, so the parts are relatively light. Electrical and thermal conductivity are poor.
Strength and hardness vary depending on the type of plastic, but are generally lower than metal materials. However, some special plastics such as reinforced plastics have higher strength and hardness. Good corrosion resistance and not easily affected by environmental factors.