ABS vs PC vs PP vs PA — How to Choose the Right Injection Molding Plastic

The Four Pillars of Injection Molding

ABS, PC, PP, and PA account for over 70% of all injection molded parts globally.

ABS — The Versatile All-Rounder

• Strengths: Excellent surface finish, good impact resistance, easy to mold
• Limitations: Poor UV resistance, limited chemical resistance
• Best for: Consumer electronics, automotive interiors, toys

Polycarbonate (PC)

• Strengths: Highest impact strength, optically clear, heat resistant
• Limitations: Poor chemical resistance, requires careful drying
• Best for: Safety products, lenses, medical devices

Polypropylène (PP)

• Strengths: Best chemical resistance, flexible, low cost
• Limitations: Poor UV resistance, lower strength
• Best for: Packaging, containers, living hinges

Polyamide (PA/Nylon)

• Strengths: Excellent mechanical properties, chemical resistant
• Limitations: Absorbs moisture, requires drying
• Best for: Gears, bearings, automotive parts