Bambu Lab ASA Filament 1.75mm 1kg

White (45100)

$27.00

1/2

Bambu Lab ASA Filament 1.75mm 1kg

$27.00

ColourWhite (45100)

The outdoor material. ASA is what you print when the part is going to live outside — plant markers, mailbox parts, wind vanes, sensor housings, anything that will sit in Singapore sun and rain and still need to work in three years.

Its headline property is UV resistance. PLA goes brittle and chalky in sunlight within months; PETG and ABS both yellow and weaken. ASA is formulated so the polymer backbone doesn't break down under UV, which is why it's used for car wing mirrors and garden furniture.

You need an enclosed printer, and it will not run in an AMS Lite. Like ABS, ASA wants a 45–60°C chamber and will warp or split layers on an open-frame machine, which rules out the A-series.

At a glance

Density	1.05 g/cm³
Nozzle temp	240–270°C
Bed temp	80–100°C
Enclosure	Required — 45–60°C chamber
Print speed	Up to 250 mm/s
Nozzle	Standard stainless is fine
Compatibility	AMS Lite AMS / AMS 2 Pro

ASA or ABS?

They print almost identically — same temperatures, same enclosure, same plates, same ventilation. So the choice comes down to the numbers, and ASA wins every single one of them:

	ASA	ABS
Tensile strength	37 MPa	33 MPa
Stiffness	2450 MPa	2200 MPa
Impact	41.0 kJ/m²	39.3 kJ/m²
Vicat softening	106°C	94°C
UV resistance	Excellent	Moderate

Our recommendation is ASA, and it isn't close. It is stronger, stiffer, tougher, survives 12°C more heat, and holds up in sunlight where ABS yellows and goes brittle.

Printing it well

Glue the plate. Bambu list glue as required for ASA, not optional. Engineering, High Temperature or Textured PEI; the Cool Plate SuperTack is not compatible.

Chamber temperature is the biggest lever on warping — but your slicer settings matter too. Start with the chamber: the H2 series controls it actively, and on a P1S or X1C you can preheat the bed to maximum for about 15 minutes before starting. Then check the settings — Bambu advise keeping infill under 50% and walls to 6 or fewer. Their default 2 walls and 15% infill is enough for most non-structural parts, and piling on more simply adds shrinkage stress for the chamber to fight.

Layer bonding is the weak point. Impact strength across layers is 4.9 kJ/m² against 41.0 in plane. That is a large gap even by FDM standards, so orientation matters: never lay a part so that an impact would try to peel the layers apart.

Ventilate. ASA releases styrene like ABS. Enclosure shut, room aired.

Annealing: 80–90°C for 6 to 12 hours, with the usual caveat that larger parts may distort.

Storage

Bambu specifies under 20% RH, sealed with desiccant, and 80°C for 8 hours to dry. As with ABS, a 70°C dryer won't do it.

As filament takes on moisture you'll hear popping at the nozzle, then see stringing and rough surfaces. Dry it and it usually comes back.

Bambu's own usage guide goes further on warping, chamber temperature and ventilation: ABS / ASA / PC Usage Guide · 3D Print Shrinkage: Causes and Solutions

Full specifications

Printing

Nozzle temperature240–270°C

Nozzle size0.2–0.8 mm

Bed temperature80–100°C

Chamber temperature45–60°C

Build plateEngineering, High Temperature
or Textured PEI, with glue

Print speedUp to 250 mm/s

Retraction0.8–1.4 mm at 20–40 mm/s

Drying & storage

Drying80°C for 8 hours

HumidityUnder 20% RH, sealed

Water absorption0.45%

Annealing80–90°C for 6–12 hours

Thermal

Density1.05 g/cm³

Melting temperature210°C

Vicat softening106°C

Heat deflection92°C at 1.8 MPa
100°C at 0.45 MPa

Mechanical

Tensile strength (X–Y)37 ± 3 MPa

Young's modulus (X–Y)2450 ± 270 MPa

Bending strength (X–Y)65 ± 5 MPa

Impact strength (X–Y)41.0 ± 2.3 kJ/m²
19.6 ± 1.8 notched

Figures from the Bambu Lab ASA technical data sheet v3.0, with build-plate and compatibility detail from Bambu's ABS / ASA / PC usage guide. Real-world results vary with printer, settings and model geometry.