ASA High Strength Filament 1.75mm Flexible Filament 5lb/2.2Kg spool - Black, ASA is a thermoplastic similar to ABS, but with better weather resistance. ASA’s combination of high Strength Filament and flexibility along with its superior UV resistance makes it ideal for printing objects which may be used in the outdoors or in industrial settings. A heated bed is required to successfully adhere ASA to the build plate. For the best results when printing with ASA, a fully enclosed print bed is recommended. Applications: Commercial and structural outdoor application, Heavy use, and General purpose 3D printing. Regulatory Compliance: RoHS & REACH ||| Physical Characteristics-- Tensile Modulus: 314 KSI, Yield Strength Filament: 7110 PSI, Tensile Elongation: 6.0%, Notched Izon Impact: 2.39 ft-lb/in ||| Size-- Nominal Outer Diameter: 2.85 mm, OD Tolerance: ±0.08, Ovality: < 0.001mm. Extruder Temperature: 240-250°C / Bed Temperature: 90-130 °C, UNIT OF MEASURE: EA