SUNLU ASA 1.75mm Filament 1kg Spool

The SUNLU ASA 1.75mm Filament is a high-performance engineering thermoplastic designed for demanding applications requiring exceptional weather resistance and mechanical strength. With UV resistance 10 times stronger than ABS, this tough filament excels in outdoor environments where prolonged sun exposure, rain, and temperature fluctuations would degrade other materials. ASA combines the printability of ABS with superior weatherproofing, making it ideal for automotive parts, outdoor signage, garden equipment, and functional prototypes that face harsh environmental conditions. The precision-engineered formula delivers excellent impact resistance and chemical stability while maintaining dimensional accuracy throughout the printing process.

Built for professionals and advanced makers, this ASA filament features a matte surface finish that naturally hides layer lines without post-processing, creating smooth, professional-looking parts straight from the printer. The enhanced spool design accommodates AMS systems and includes temperature scales for optimal workflow integration.

Key Features:

Superior Weather & UV Protection: UV resistance 10x stronger than ABS prevents yellowing and degradation, ensuring parts maintain color and strength after extended outdoor exposure to sun, rain, and temperature cycles.

Engineering-Grade Strength: High impact resistance and tensile strength surpass standard printing materials, making it ideal for functional mechanical parts, automotive components, and durable prototypes.

Excellent Heat Resistance: Glass transition temperature of 108°C and heat deflection temperature of 80°C provide thermal stability for applications exposed to elevated temperatures up to 90°C.

Professional Matte Finish: Natural matte surface texture conceals layer lines and provides superior aesthetic quality without requiring sanding, polishing, or other post-processing techniques.

Chemical & Moisture Resistance: Outstanding resistance to acids, alkalis, solvents, and humidity makes it suitable for industrial applications and outdoor environments where chemical exposure is a concern.

Precision Manufacturing: Clog-free design with ±0.02mm dimensional accuracy ensures consistent extrusion and reliable printing performance across extended print jobs.

Specifications:

Material: Acrylonitrile Styrene Acrylate (ASA) thermoplastic

Diameter: 1.75mm (±0.02mm tolerance)

Weight: 1kg (2.2 lbs) spool

Glass Transition Temperature: 108°C

Heat Deflection Temperature: 80°C

Nozzle Temperature: 250-260°C at 50-100mm/s; 260-280°C at 100-200mm/s

Bed Temperature: 90-110°C (heated bed required)

Print Speed: 50-100mm/s (moderate speeds recommended for optimal quality)

Enclosure: Recommended for consistent results and reduced warping

Surface Finish: Natural matte texture

Applications: Automotive parts, outdoor signage, garden equipment, electrical enclosures, functional prototypes

Compatibility: FDM 3D printers with all-metal hotend and heated bed capabilities

SUNLU ASA Safety Data Sheet