Filament Atlas

ASA

Acrylonitrile Styrene Acrylate

40 products from 33 makers. Bambu Lab sells its own filament of this material for the H2C.

Tensile modulus (XY)
2.1GPa
0.210 (log)
13 products · middle half 2–2.32
Tensile strength (XY)
38.6MPa
0125
15 products · middle half 35.9–41.5
Tensile strength (Z)
25.8MPa
060
7 products · middle half 21.5–28.9
Notched Charpy impact
12kJ/m²
150 (log)
5 products · middle half 10.5–12.9
HDT at 0.45 MPa
96°C
50300
12 products · middle half 92–100
Price
39CAD/kg
0300
5 products · middle half 39–57

ASA is acrylonitrile styrene acrylate. Makers sell it for outdoor and weather-exposed parts, citing its UV resistance. Its HDT at 0.45 MPa is 95.5 °C, below its glass transition, and across the layers a part keeps about 59 % of its flat tensile strength. On the H2C it prints with a standard nozzle, but Bambu Lab's Filament Guide requires an enclosure, and some products ask for more chamber heat than the H2C reaches.

Well documented 67 documents from 34 publishers, 48 of them data sheets. Each figure is the median of the products that publish it comparably, and beside it the middle half of them; a value on a test bar no document describes as printed, or with no stated test load, is set apart, except a heat deflection of a plastic that cannot crystallise, which its glass transition sets, unless its document points to a moulded or resin bar. Products with an added filler or additive are shown but kept out of the medians.

Nozzle
240⁠–⁠265 °C
most products that give one
Bed
90⁠–⁠100 °C
most products that give one
Heated chamber
60 °C
most products that give one
Drying
45–90 °C, 2–16 h
20 of 40 products call for it; 19 more give it as optional
Nozzle type
standard
8 say a standard nozzle is enough; the Bambu Lab Filament Guide says any for 31 more; the rest are silent

Beyond the H2C's limits (nozzle 350 °C, bed 120 °C, heated chamber 65 °C): chamber for 2 products.

Among the materials

Against ASA-CF, ASA is 2.1 times as tough in notched impact, 46 % less stiff and 39 % less expensive. Against ASA-GF, ASA is 9 % less stiff. Among the materials, ASA has a low density and price: both are in the lowest quarter of the materials that publish them. The rest of its key properties sit in the middle half.

ASA is tougher in notched Charpy than ASA-CF and PC but costs less than ASA-CF, ASA-GF and PC-ABS and others

How does it compare with what an engineer would buy instead?

  • ASA: its products' median and middle half
  • an alternative
  • lowest to highest
  • each material's median (top row)
  • set apart: test bar not described as printed, or no stated load
All materials
ASA40 products
ASA-CF17 products
ASA-GF6 products
ABS55 products
PC-ABS13 products
PC21 products
Modulus (XY)GPa, log scale
Strength (XY)MPa
Strength (Z)MPa
Notched CharpykJ/m², log scale
HDT 0.45 MPa°C
PriceCAD/kg

Each row is a material, each column a property: the bar is the middle half of a material's products, the tick their median, the hairline their lowest to highest; the ticks above the rows are every material's median.

The figure as a table
MaterialModulus (XY) (GPa)Strength (XY) (MPa)Strength (Z) (MPa)Notched Charpy (kJ/m²)HDT 0.45 MPa (°C)Price (CAD/kg)
ASA (this material)2.1 (2⁠–⁠2.32) · 1338.6 (35.9⁠–⁠41.5) · 1525.8 (21.5⁠–⁠28.9) · 712 (10.5⁠–⁠12.9) · 596 (92⁠–⁠100) · 1239 (39⁠–⁠57) · 5
ASA-CF3.91 (2.35⁠–⁠4.43) · 639.1 (39⁠–⁠45.8) · 727.5 (23⁠–⁠30.3) · 45.76 · 3101 (97⁠–⁠103) · 565 (54⁠–⁠120) · 5
ASA-GF2.31 · 239 · 324.6 · 28 as published (1)93 · 296 · 1
ABS2.2 (2.02⁠–⁠2.25) · 1334.5 (33⁠–⁠35.6) · 1827.3 (24.6⁠–⁠28.3) · 1220 (18⁠–⁠21.5) · 795 (89⁠–⁠99) · 1840 (31⁠–⁠52) · 9
PC-ABS1.84 (1.58⁠–⁠1.94) · 441.8 (39.9⁠–⁠43.5) · 626.4 · 240 · 3112 (111⁠–⁠120) · 764 · 3
PC2.15 (2.02⁠–⁠2.41) · 1260 (54.2⁠–⁠65.3) · 1546 (35.9⁠–⁠52.3) · 69.75 (6.65⁠–⁠14.3) · 4123 (113⁠–⁠139) · 1551 (45⁠–⁠67) · 5

Each cell is the median of the products ranked, its middle half in brackets, and how many.

How the numbers are worked out

Where ASA sits among the 128 rigid materials on file

Where is it in the landscape: stiffness against strength, heat resistance against price?

  • ASA: median, middle half as a cross
  • a ASA product
  • an alternative
  • another material
  • beyond the scale

Tensile strength (XY) against tensile modulus (XY)

MPa, log scale

51020501002000.20.512510ASAASA-CFABSPC-ABSPC

Tensile modulus (XY), GPa, log scale

HDT at 0.45 MPa against price

°C

501001502002503002050100200500ASAASA-CFASA-GFABSPC

Price, CAD/kg, log scale

Grey points are every other rigid material's medians; the alternatives are named.

The figure as a table
MaterialTensile modulus (XY)Tensile strength (XY)PriceHDT at 0.45 MPa
ASA (this material)2.1 GPa · 1338.6 MPa · 1539 CAD/kg · 596 °C · 12
ASA-CF3.91 GPa · 639.1 MPa · 765 CAD/kg · 5101 °C · 5
ASA-GF2.31 GPa · 239 MPa · 396 CAD/kg · 193 °C · 2
ABS2.2 GPa · 1334.5 MPa · 1840 CAD/kg · 995 °C · 18
PC-ABS1.84 GPa · 441.8 MPa · 664 CAD/kg · 3112 °C · 7
PC2.15 GPa · 1260 MPa · 1551 CAD/kg · 5123 °C · 15

How the numbers are worked out

Mechanical properties

Printed flat (XY), ASA typically reaches a tensile strength of 38.6 MPa at a modulus of 2.1 GPa, and breaks at 6.7 % elongation. In bending, its flexural strength is typically 64.2 MPa at a flexural modulus of 1.97 GPa.

ASA's products spread most in elongation at break: the middle half runs 5.2⁠–⁠10 %

How strong, stiff and tough are its products, and which stand out?

  • a product
  • set apart: test bar not described as printed, or no stated load
  • measured after annealing
  • added filler or additive, kept out of the median
  • middle half and median
  • beyond the scale
Tensile strength (XY)scale 30–45 MPa · 34 products, 15 in the median
Eryone ASAcolorFabb ASA30354045
Tensile modulus (XY)scale 1–5 GPa, log · 30 products, 13 in the median
Eryone ASABambu Lab ASA125
Tensile strength (Z)MPa · 8 products, 7 in the median
Eryone ASA0204060
Elongation at break (XY)scale 2–20 %, log · 29 products, 13 in the median
Eryone Hyper-Speed ASAAnycubic ASA251020
Notched Charpy impactscale 10–20 kJ/m², log · 11 products, 5 in the median
Polymaker ASABambu Lab ASA1020

One mark per product on each property's scale (zoomed where its products sit close together, as its label says); the band is the middle half of the products the median counts, and the line the median.

Hover or select a product to find it in every figure; its name opens its card on the Products page.

The figure as a table
PropertyIn the medianMedianMiddle halfLowest in the medianHighest in the medianAs publishedAdded filler or additive
Tensile strength (XY) (MPa)1538.635.9⁠–⁠41.5Eryone ASA, 30.2colorFabb ASA, 45181
Tensile modulus (XY) (GPa)132.12⁠–⁠2.32Eryone ASA, 0.943Bambu Lab ASA, 2.45161
Tensile strength (Z) (MPa)725.821.5⁠–⁠28.9Eryone ASA, 15Bambu Lab ASA, 3101
Elongation at break (XY) (%)136.75.2⁠–⁠10Eryone Hyper-Speed ASA, 1.9Anycubic ASA, 15160
Notched Charpy impact (kJ/m²)51210.5⁠–⁠12.9Polymaker ASA, 10.5Bambu Lab ASA, 19.660

Every ASA product that publishes these values is drawn; each value, with its document and conditions, is on the Products page.

How the numbers are worked out

ProductNotched Izod impactShore D hardness
SUNLU ASA7 kJ/m²not published
Flashforge ASA19 kJ/m²not published
Prusa Research Prusament ASAnot published78 Shore D
SIDDAMENT ASA18 kJ/m²not described as printednot published
Nobufil ASA8.5 kJ/m²orientation not statednot published
Fiberlogy ASA18 kJ/m²not described as printednot published
Fiberlogy MATTE ASA8 kJ/m²not described as printednot published

Across the layers (Z), ASA keeps 59 % of its flat strength and 88 % of its flat stiffness

What does a printed part lose across the layers (Z) against flat (XY), and is that usual?

  • a product
  • measured after annealing
  • equal share: 100, 75, 50 and 25 %
  • ASA's median share
  • an alternative

Tensile strength

Z keeps 59 % of XY, median of 5 products

0102030405001020304050100 %75 %50 %25 %

flat (XY), MPa

0 %50 %100 %

Share kept: PC 75 % · ABS 73 % · ASA-GF 67 % · ASA-CF 60 % · ASA 59 % · PC-ABS 57 %

Tensile modulus

Z keeps 88 % of XY, median of 5 products

00.511.522.500.511.522.5100 %75 %50 %25 %

flat (XY), GPa

0 %50 %100 %

Share kept: PC-ABS 91 % · ABS 89 % · PC 88 % · ASA 88 % · ASA-GF 82 % · ASA-CF 56 %

Elongation at break

Z keeps 50 % of XY, median of 5 products

02468100246810100 %75 %50 %25 %

flat (XY), %

0 %50 %100 %

Share kept: ASA-CF 91 % · PC 59 % · ASA 50 % · ABS 38 % · ASA-GF 36 % · PC-ABS 36 %

Each point is a product that publishes both from one sheet: below the 100 % ray it keeps less across the layers than flat. Under each plot, the median share its alternatives' products keep.

The figure as a table
ProductPropertyFlat (XY)Across (Z)Z as a share of XY
Bambu Lab ASATensile strength37 MPa31 MPa84 %
Polymaker ASATensile strength38.6 MPa30 MPa78 %
Eryone Hyper-Speed ASATensile strength34.8 MPa19 MPa, Z (X-Z)55 %
Eryone ASATensile strength30.2 MPa15 MPa, Z (X-Z)50 %
Anycubic ASATensile strength41 MPa24 MPa59 %
Bambu Lab ASATensile modulus2.45 GPa2.12 GPa87 %
Polymaker ASATensile modulus2.17 GPa1.97 GPa91 %
Eryone ASATensile modulus0.943 GPa0.913 GPa, Z (X-Z)97 %
Raise3D Premium ASATensile modulus2.38 GPa2.06 GPa87 %
QIDI ASATensile modulus2.32 GPa2.04 GPa88 %
Bambu Lab ASAElongation at break9.2 %4.6 %50 %
Polymaker ASAElongation at break4.4 %2.4 %55 %
Eryone Hyper-Speed ASAElongation at break1.9 %1.7 %, Z (X-Z)89 %
Raise3D Premium ASAElongation at break6.7 %2.7 %40 %
QIDI ASAElongation at break5.2 %2.43 %47 %
ASA-CF (alternative)Tensile strength60 % · 4
ASA-GF (alternative)Tensile strength67 % · 2
ABS (alternative)Tensile strength73 % · 9
PC-ABS (alternative)Tensile strength57 % · 1
PC (alternative)Tensile strength75 % · 5
ASA-CF (alternative)Tensile modulus56 % · 4
ASA-GF (alternative)Tensile modulus82 % · 2
ABS (alternative)Tensile modulus89 % · 7
PC-ABS (alternative)Tensile modulus91 % · 1
PC (alternative)Tensile modulus88 % · 3
ASA-CF (alternative)Elongation at break91 % · 3
ASA-GF (alternative)Elongation at break36 % · 1
ABS (alternative)Elongation at break38 % · 9
PC-ABS (alternative)Elongation at break36 % · 1
PC (alternative)Elongation at break59 % · 4

Tensile strength: 2 more products are in the median across the layers but give no share, with no flat value of the same test from the same sheet: QIDI ASA (tensile yield strength flat, tensile break strength across) and Stratasys ASA (no flat value compared). Tensile modulus: 2 more products are in the median across the layers but give no share, with no flat value of the same test from the same sheet: Eryone Hyper-Speed ASA (no flat value compared) and Stratasys ASA (no flat value compared). Elongation at break: 2 more products are in the median across the layers but give no share, with no flat value of the same test from the same sheet: Eryone ASA (no flat value compared) and Stratasys ASA (no flat value compared).

How the numbers are worked out

Flat and across the layers, property by property

Flat and across the layers

PropertyPrinted flat (XY)Across the layers (Z)Z as a share of XY
MedianProductsMedianProducts
Tensile strength MPa38.635.9⁠–⁠41.51525.821.5⁠–⁠28.97
Tensile modulus GPa2.12⁠–⁠2.32132.041.6⁠–⁠2.067
Elongation at break %6.75.2⁠–⁠10132.41.95⁠–⁠2.567
Flexural strength MPa64.256.8⁠–⁠6514401
Flexural modulus GPa1.971.85⁠–⁠2.23141.651

The middle half of the products under each median. The share is each product's Z value as a part of its XY value, from one sheet and one state, and the median of those shares. Where it counts fewer products than the Z median, the others publish no flat value of the same test from the same sheet; the figure's table names them. How XY and Z differ.

Thermal properties

ASA's HDT is typically 96 °C under 0.45 MPa and 86 °C under 1.8 MPa, with its glass transition typically at 103 °C. As published, Vicat softening is typically 96 °C.

Most ASA products deflect at 92⁠–⁠100 °C under 0.45 MPa

Where do its products soften under load?

  • a product
  • set apart: test bar not described as printed, or no stated load
  • measured after annealing
  • added filler or additive, kept out of the median
  • middle half and median
  • beyond the scale
HDT at 0.45 MPascale 85–105 °C · 24 products, 12 in the median
Flashforge ASAStratasys ASA859095100105
HDT at 1.8 MPascale 75–100 °C · 17 products, 14 in the median
Filament2Print ASAPolymaker ASA7580859095100
Glass transition (Tg)scale 96–108 °C · 11 products, all in the median
MatterHackers ASASUNLU ASA9698100102104106108
The figure as a table
PropertyIn the medianMedianMiddle halfLowest in the medianHighest in the medianAs publishedAdded filler or additive
HDT at 0.45 MPa (°C)129692⁠–⁠100Flashforge ASA, 88Stratasys ASA, 103121
HDT at 1.8 MPa (°C)148686⁠–⁠87Filament2Print ASA, 68Polymaker ASA, 10030
Glass transition (Tg) (°C)1110398⁠–⁠105MatterHackers ASA, 95SUNLU ASA, 10800

Every ASA product that publishes these values is drawn; each value, with its document and conditions, is on the Products page.

How the numbers are worked out

Printing on the H2C

ASA softens near 96 °C, above the H2C's 65 °C chamber; 2 products ask for more than the H2C gives

What does printing it on the H2C take, and how hot can a part get?

  • share of the products that accept each temperature
  • what most products accept
  • the H2C's limit, and beyond it
  • a product
  • ASA: its products' median and middle half
  • as published, under each sheet's own test

Printing it on the H2C

Nozzle240⁠–⁠265 °C, accepted by most of the 35 products that give a window · the H2C reaches 350 °C
Bed90⁠–⁠100 °C, accepted by most of the 35 products that give a window · the H2C reaches 120 °C
Heated chamber60 °C, accepted by most of the 7 products that give a window; 4 need none · the H2C reaches 65 °C
Drying45⁠–⁠90 °C, 2⁠–⁠16 h, 24 products

In service

HDT at 1.8 MPa14 products
86 °C
HDT at 0.45 MPa12 products
96 °C
Vicat softening temperature22 products, as published
92⁠–⁠106 °C
Glass transition (Tg)11 products
103 °C

°C

One temperature axis for the settings a print needs and the temperatures a part meets. A setting's shade is how many of the products whose sheets give a window accept each degree; the H2C's limit closes its row.

The figure as a table
Setting or propertyMost products, or the medianProductsH2C limit
Nozzle240⁠–⁠265 °C35350 °C
Bed90⁠–⁠100 °C35120 °C
Heated chamber60 °C765 °C
Drying45⁠–⁠90 °C, 2⁠–⁠16 h24—
HDT at 1.8 MPa86 °C (86⁠–⁠87 °C)14—
HDT at 0.45 MPa96 °C (92⁠–⁠100 °C)12—
Vicat softening temperature92⁠–⁠106 °C22—
Glass transition (Tg)103 °C (98⁠–⁠105 °C)11—

Windows read from the Bambu Lab Filament Guide are not shaded: the guide speaks for every product that reads it.

How the numbers are worked out

SettingMost ASA productsBambu Lab Filament Guide (ASA column)
Nozzle240⁠–⁠265 °C most products that give one240 - 280 ℃
Bed90⁠–⁠100 °C most products that give oneSmooth PEI Plate (90 - 100 °C)
Textured PEI Plate (90 - 100 °C)
Heated chamber60 °C most products that give oneenclosure required
Drying45⁠–⁠90 °C, 2⁠–⁠16 h 20 of 40 products call for it; 19 more give it as optionaloptional: 80 °C for 8 h
Nozzle typestandard 8 say a standard nozzle is enough; the Bambu Lab Filament Guide says any for 31 more; the rest are silentany

Where a product's own sheet is silent, its setting comes from a sheet it shares or from the Bambu Lab Filament Guide; each product's card says which.

After printing

One product publishes values measured after annealing, at 80 °C for 12 h.

What makers say about printing it

Warping and shrinkage

  • Please keep the chamber closed to avoid warping and layer separation issues during the process. QIDI ASA, data sheet, p. 4

Printing advice

On ASA in general

  • Enclosure helps warping; source describes good detail and little stringing. Warping / detail after Prusa Research, ASA | Prusa Knowledge Base
More from makers: moisture sensitivity, nozzle wear, supports and removal, adhesion between layers and odour and emissions

Moisture sensitivity

  • As the ASA filament absorbs moisture easily, it should be dried before being used. Flashforge ASA, data sheet, p. 3

Nozzle wear

Supports and removal

  • MakerBot ASA is supported by Stratasys® SR-30 support material for unrestricted geometric freedom UltiMaker Precision ASA, data sheet, p. 1

Adhesion between layers

  • The composition of Spectrum ASA 275 has been specially modified to make the material more flexible, improve flow parameters, reduce shrinkage, and increase adhesion between layers. Spectrum ASA 275, data sheet, p. 1

Odour and emissions

  • Whilst printing ASA produces a VOC derivative. Nanovia ASA, data sheet, p. 1

Products

40 products from 33 makers; the most from Spectrum (3), 3DXTECH (2) and AzureFilm (2).

These are published values, not recommendations: the selector judges each product against your requirements.

Compare the 40 products

Uses, limitations and chemicals

What it is sold for

What makers warn about

Finish and accuracy
  • It’s possible to smoothen Nanovia ASA using acetone. Nanovia ASA, data sheet, p. 1
  • Variety of colors and beautiful, low-gloss finish to make your models pop! 3DXTECH Triton ASA Model Material, maker's product page or guide, p. 1
  • Using a state-of-the-art manufacturing process, very low manufacturing tolerances are achieved, which leads to convincing printing results with all FDM 3D printers. Fabru Acrylnitril-Styrol-Acrylester (ASA), maker's product page or guide, p. 1
  • With ASA Prime you will create precise, detailed prints AzureFilm ASA Prime, data sheet, p. 1

Chemicals and environment

ExposureWhat makers say
Water solubilityInsoluble, in its one statement
Acid resistanceResistant, in 2 of 3 statements
Alkali resistanceResistant, in 2 of 3 statements
Organic solvent resistanceLimited, in its one statement
Oil and grease resistanceMixed, 2 statements disagree
FlammabilityFlammable, in its one statement
UV and outdoorDescribed in words, with no rating, in all 20 statements
Fatigue evidenceDescribed in words, with no rating, in its one statement
What guides and references say of ASA in general (2)
  • Better UV durability than ABS; no universal outdoor service-life guarantee. UV and outdoor after Prusa Research, ASA | Prusa Knowledge Base
  • Original study examines mineral-oil exposure coupled with low-cycle loading. The exposure and loading protocol must be matched; a generic oil-resistance label is insufficient. Oil and grease resistance after Głowacki et al., Polymers, Change in the Low-Cycle Performance on the 3D-Printed Materials ABS, ASA, HIPS, and PLA Exposed to Mineral Oil

Makers rarely give the concentration, temperature or duration: treat them as indications, not design data. Each product's statements are on its card.

Density and price

ASA's density is typically 1,070 kg/m³, the middle half 1,070 kg/m³, across 34 products. ASA typically costs 39 CAD/kg, the middle half 39⁠–⁠57 CAD/kg, across the 5 products with a regular price in the sample; the lowest is colorFabb ASA at 31 CAD/kg.

Regular prices, never sale prices, from 9 Canadian shops and 10 foreign shops, sampled 10 Sep–20 Oct 2026, not live; shipping and tax are not included.

Other properties, as published

15 more properties are published, each under its own sheet's test conditions, so they are listed, not ranked.

The 15 properties, lowest to highest
PropertyProductsLowest–highest
Melt mass-flow rate205⁠–⁠45 g/10 min
Elongation at yield110.6⁠–⁠6 %
Melting temperature8120⁠–⁠250 °C
Hardness792⁠–⁠107 Rockwell R
81.5 Shore (scale not specified by source)
Water absorption70.13⁠–⁠1 %
Mould shrinkage60.4⁠–⁠0.9 %
Flexural elongation at break22.7⁠–⁠4.1 %
Melt volume-flow rate212.9⁠–⁠23 cm³/10 min
Compression strength175.4⁠–⁠188 MPa
Continuous service temperature150 °C
Decomposition temperature1392 °C
Fatigue life1308⁠–⁠1 × 10⁶ cycles
Impact strength, test unclear130.5 kJ/m²
Interlayer adhesion strength111 MPa
Moisture content10.27 %

Sources

67 documents from 34 publishers (48 data sheets, 16 makers' product pages and guides, 2 peer-reviewed studies and 1 printer document), read 10 Sep–19 Oct 2026. Each value on ASA's Products page names its document and page, and links to the original.

Bambu Lab, H2C Filamant Printing Guide (the H2C's printer guide): print settings for 38 products.

The Bambu Lab Filament Guide (print settings per material type): read for 37 products whose own sheets are silent.

Every document (67), by publisher
PublisherDocumentsValuesProducts
Spectrum6365
Fiberlogy5332
Polymaker4431
AzureFilm4412
3DXTECH4162
Prusa Research3241
FormFutura3213
Fabru391
SUNLU2291
Eryone2262
Bambu Lab2201
colorFabb2201
and 22 more publishers, with 25 documents