AnyCubic ASA Filament Gray 1 kg — 3D printing material for FDM printers, single-color spool

AnyCubic ASA Filament Gray 1 kg is a 1.75 mm thermoplastic spool for FDM/FFF 3D printers, supplied as a single-color 1 kg roll. The material is formulated for demanding applications with improved UV and weather resistance, a high heat deflection temperature and reduced odour compared with ABS, making it suitable for outdoor parts and functional prototypes that require dimensional stability under changing conditions.

Advantages

ASA offers strong resistance to sunlight, moisture and fluctuating weather, combined with a heat deflection temperature around 90°C. It has higher thermal and UV stability than PLA and many PETG grades, while producing noticeably less smell during printing than ABS. Mechanically, the filament delivers good tensile strength, impact resistance and stiffness for functional components intended for external use.

Suitable for

• Outdoor fixtures and housings
• Functional prototypes and end-use parts exposed to sun and moisture
• Engineering components requiring improved impact resistance and thermal stability

When it may not be suitable

ASA is less suitable for very low-temperature applications where extreme brittleness may occur, or for parts that require food-contact certification. It also requires higher printing temperatures and careful bed adhesion; if a user cannot provide a heated bed, enclosed build chamber, or adequate ventilation, other materials like PLA may be easier to print.

Key specifications

• Color: gray
• Filament type: ASA
• Weight: 1 kg spool
• Diameter: 1.75 mm
• Approximate length: 395 m
• Density: 1.07 g/cm³
• Tensile strength: 41 MPa
• Elongation at break: 15%
• Flexural strength: 62 MPa
• Flexural stiffness: 3292 MPa
• Young's modulus: 2220 MPa
• Impact resistance (Izod): 90 kJ/m²
• Melting point: 120°C
• Melt flow index: 12–23 g/10 min
• Heat deflection temperature: 90°C

How to use

Load the 1.75 mm ASA filament into an FDM/FFF printer and follow recommended temperature settings for ASA filaments. Use a heated bed and set bed temperature to promote adhesion; an enclosure or draft-free environment helps reduce warping. Ensure good first-layer adhesion using a suitable build surface or adhesive, print slower than PLA where necessary, and allow parts to cool gradually to retain dimensional stability. Provide adequate ventilation when printing.

What to consider before purchase

• Printer compatibility with 1.75 mm ASA filament and required extrusion temperatures
• Availability of a heated bed and preferably an enclosed or well-controlled build environment
• Need for post-processing or surface finishing for outdoor use

Usage recommendations

For best results print with stable extrusion temperatures, use a heated bed and an enclosure when possible, ensure strong first-layer adhesion, and ventilate the print area. These steps help maximise the ASA filament’s UV resistance, mechanical performance and dimensional stability for outdoor and functional parts.