How to choose the right material for clear parts
10 Pro tips : design for plastic injection molding
Comparing PC and ABS in Plastic Injection Molding:
Finding the Perfect Fit your project
Choosing the right material for your plastic injection molding project is crucial for success. Two popular options are PC (polycarbonate) and ABS (acrylonitrile butadiene styrene). While both offer unique benefits, it's important to understand their differences to make an informed decision.
A sweet thing about ABS and PC is that they can be switched and even used Together withou affecting the dimension of the part,as they have very similar shrinkage rate . ABS+PC or PC+ABS are also very commonly used.
| Feature |
PC |
ABS |
| Impact Resistance |
Excellent |
Good |
| Heat Resistance |
High |
Moderate |
| Chemical Resistance |
Good |
Moderate |
| Dimensional Stability |
High |
Moderate |
| Transparency |
|
|
| Rigidity |
Rigid |
Somewhat rigid |
| Cost |
More expensive |
Less expensive |
- Cost-effective: More affordable than PC, making it budget-friendly for many projects.
- Good impact resistance: Handles shocks and drops well, suitable for general applications.
- Chemical resistance: Resists common chemicals like oils, greases, and detergents.
- Easy to machine: Can be drilled, tapped, and glued easily for post-molding modifications.
- Wide range of colors and finishes: Available in a variety of colors and textures for aesthetic appeal.
- Superior impact resistance: Withstands high impact and abuse, making it ideal for demanding applications.
- High heat resistance: Performs well in high-temperature environments, exceeding ABS capabilities.
- Dimensional stability: Retains its shape well under different temperatures and pressures.
- Can be clear: Offers excellent transparency for optical applications.
- Flame retardant: Some grades are naturally flame retardant, enhancing safety.
