🔍 ABS vs POM (Delrin) –How to Choose the Right Plastic for Your Functional Prototype?
Selecting between ABS and POM (Delrin) is a common crossroad in prototyping. Your choice directly impacts performance, durability, and cost.
Here’s a quick comparison to guide your decision:
- Stiffness/Hardness:
- ABS: Medium
- POM (Delrin): High
- Impact Toughness:
- ABS: High
- POM (Delrin): Medium
- Friction Coefficient / Wear Resistance:
- ABS: Medium
- POM (Delrin): Very Low / Excellent
- Typical Surface Finish:
- ABS: Matte, easy to paint
- POM (Delrin): Glossy, difficult to bond
- Relative Cost:
- ABS: Lower
- POM (Delrin): Higher
✅ When to choose ABS:
Enclosures and housings requiring good impact resistance.
Appearance models and parts that need subsequent painting.
Cost-sensitive applications without requiring extremely high stiffness.
✅ When to choose POM (Delrin):
Functional parts requiring low friction and high wear resistance (e.g., gears, bearings, sliders).
Precision components demanding high rigidity and dimensional stability.
Applications requiring excellent fatigue and chemical resistance.
Still not 100% sure? Don’t guess – test.
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