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ABS vs ASA — settings & when to use which
A side-by-side of recommended print settings and practical trade-offs between ABS (Acrylonitrile Butadiene Styrene) and ASA (Acrylonitrile Styrene Acrylate), from the manufacturer data this site is built on.
| ABS | ASA | |
|---|---|---|
| Nozzle temp | 230–270 °C | 240–260 °C |
| Bed temp | 80–110 °C | 75–95 °C |
| Enclosure | Required | Required |
| Part cooling | none | none |
| Moisture sensitivity | medium | medium |
| Heat resistance | High | High, comparable to ABS (glass transition ~100 °C), with much better UV/weather resistance |
Choose ABS when…
- Durable indoor functional parts
- Parts needing heat resistance
- Acetone vapor-smoothed finishes
Choose ASA when…
- Outdoor / UV-exposed parts
- Automotive exterior trim
- Weatherproof functional parts
- Anything ABS-grade that also sees sun
FAQ
Should I print in ABS or ASA?
ABS: A durable, heat-resistant engineering plastic that can be acetone-smoothed — but it warps hard and emits fumes (styrene), so an enclosure and ventilation are effectively required. ASA: Essentially ABS engineered for the outdoors: similar strength and heat resistance, far better UV and weather stability, and less odor — but it still warps and wants an enclosure. In short, ABS runs cooler (230–270 °C, enclosure required) and ASA runs hotter (240–260 °C, enclosure required).
Is ASA stronger than ABS?
ABS heat resistance: High. Glass transition ~100 °C — suitable for warm environments and under-hood-adjacent indoor parts. ASA heat resistance: High, comparable to ABS (glass transition ~100 °C), with much better UV/weather resistance.