Matériau · FDM
Filament ASA : guide complet
ASA (acrylonitrile styrene acrylate) is the sun-ready ABS: same mechanical and thermal properties, but vastly better UV resistance. The reference for any durable outdoor part.
Acrylonitrile styrène acrylate
Caractéristiques du ASA
Notation 0-5 sur les 8 critères qui comptent au quotidien à l'atelier.
- Tenue mécanique
- 4 / 5
- Résistance chaleur
- 4 / 5
- Résistance UV
- 5 / 5
- Souplesse
- 2 / 5
- Aptitude alimentaire
- 1 / 5
- Transparence
- 1 / 5
- Facilité d'impression
- 2 / 5
- Coût matière
- 3 / 5
Pour quels projets choisir le ASA ?
ASA is mandatory for printed garden furniture, outdoor signage, south-facing roof parts, bike/motorcycle accessories. Where PLA yellows in two months and ABS cracks, ASA holds several years without visible degradation.
Automotive industry uses it for interior parts (dashboard) and some exterior non-structural parts (grilles, antennas, mirrors). If your brief involves 'car' or 'durable outdoor', ASA is likely the answer.
Smooths like ABS with acetone and paints very well. For pro-grade painted outdoor parts, winning combo.
Limites du ASA
Same print constraints as ABS: fumes, heated enclosure, warping on open machines. Not an open-office filament.
More expensive (~€35-45/kg) for near-identical mechanical properties. For indoor-only, ABS or PETG are cheaper.
Releases styrene like ABS — closed enclosure + ventilation required. No food safety.
- Éviter : Petit budget
- Éviter : Contact alimentaire
Alternatives au ASA selon votre usage
Questions fréquentes sur le ASA
ASA is UV-stable ABS, swapping UV-sensitive butadiene for UV-stable acrylate. Everything else identical: heat resistance, mechanical strength, acetone post-processing. Outdoor: ASA. Indoor: ABS.
Imprimer votre pièce en ASA
Atelier Unlimit3d, basé à Lille (Hauts-de-France) et Paris. Estimation gratuite, devis sous 24 h, livraison France entière.