PC-ABS is an engineering blend that combines polycarbonate''s strength and heat resistance with ABS''s easier printing and better surface finish. It is a step up from plain ABS for functional parts that face heat, impact, and stress — common in automotive interiors and electronics housings. Here is when PC-ABS is worth it.
Key Takeaways
- PC-ABS bridges the gap between ABS (easy) and polycarbonate (tough).
- Higher heat resistance (~100–110 °C) and impact strength than ABS.
- Better dimensional stability and finish than pure PC.
- Ideal for automotive interior parts, electronics housings, and tooling.
- Still needs a controlled, heated environment to print well.
Why blend PC with ABS?
Pure polycarbonate is extremely strong and heat-resistant but difficult to print — high temperatures, warping, and moisture sensitivity. Pure ABS prints more easily but is weaker and less heat-tolerant. Blending them yields a material with most of PC''s mechanical and thermal performance and most of ABS''s printability — a practical middle ground for demanding functional parts.
How does PC-ABS compare?
| Property | ABS | PC-ABS | PC |
|---|---|---|---|
| Heat resistance | 95–105 °C | 100–110 °C | 120–140 °C |
| Impact strength | High | Higher | Highest |
| Printability | Medium | Medium | Hard |
| Best for | General parts | Tough functional parts | Max strength/heat |
When to choose PC-ABS
Choose PC-ABS when a part needs more heat and impact resistance than ABS but you want better stability and finish than pure PC — under-bonnet automotive trim, electronics enclosures near heat sources, and structural brackets. For maximum performance, compare with nylon and PC in our engineering polymers guide.
Frequently Asked Questions
Is PC-ABS UV-stable for outdoor use?
Not inherently — for sustained sun, consider ASA (see ASA vs ABS) or a UV coating.
Can PC-ABS be vapour smoothed?
Often yes, like ABS — ask us about finish options for your part. Get a quote.