Filament Atlas

PA6-GF

Glass-Fiber-Reinforced Polyamide 6

11 products from 10 makers. Bambu Lab sells its own filament of this material for the H2C.

Tensile modulus (XY)
4.35GPa
0.210 (log)
4 products · middle half 3.91–4.66
Tensile strength (XY)
82.3MPa
0125
6 products · middle half 76.3–87.9
Tensile strength (Z)
60.7MPa
060
3 products · 27–61.4
Notched Charpy impact
8.6kJ/m²
150 (log)
2 products · 7.2–10
HDT at 0.45 MPa
186°C
50300
7 products · middle half 181–191
Price
84CAD/kg
0300
3 products · 77–146

PA6-GF is glass-fibre-reinforced polyamide 6. Makers sell it for gear wheels, bearings and sliding elements, and for demanding industrial and automotive uses. It is semicrystalline, so it carries light load well above its glass transition: its HDT at 0.45 MPa is 186 °C. On the H2C it needs a hardened nozzle, and makers stress dry storage because it is sensitive to moisture.

Partly documented Notched Charpy impact rests on 2 products, tensile strength (Z) and price on 3 products each and tensile modulus (XY) on 4 products. 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.

Nozzle
260⁠–⁠290 °C
most products that give one
Bed
80⁠–⁠100 °C
3 of 7 that give one
Heated chamber
25⁠–⁠60 °C
most products that give one
Drying
80–110 °C, 6–12 h
9 of 11 products call for it; 2 more give it as optional
Nozzle type
hardened
8 of 11 products' sheets ask for one; the Bambu Lab Filament Guide says hardened for 3 more

Beyond the H2C's limits (nozzle 350 °C, bed 120 °C, heated chamber 65 °C): bed for 1 product.

Among the materials

Against PA6-CF, PA6-GF is 36 % less tough in notched impact, 35 % less expensive and 26 % stronger across the layers. Against PPA-CF, PA6-GF is 43 % less stiff and 24 % weaker flat, and its HDT at 0.45 MPa is 34 °C lower. Among the materials, PA6-GF has a high tensile modulus (XY), tensile strength (XY), tensile strength (Z), HDT at 0.45 MPa and density: each is in the top quarter of the materials that publish it. The rest of its key properties sit in the middle half.

Against its alternatives, PA6-GF has the highest tensile strength (Z) and the lowest price

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

  • PA6-GF: 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
  • beyond the scale
All materials
PA6-GF11 products
PA69 products
PA6-CF14 products
PPA-CF8 products
PAHT-CF5 products
PPS-CF7 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)
PA6-GF (this material)4.35 (3.91⁠–⁠4.66) · 482.3 (76.3⁠–⁠87.9) · 660.7 · 38.6 · 2186 (181⁠–⁠191) · 784 · 3
PA62.1⁠–⁠3.3 as published (6)50 · 1—5⁠–⁠6.8 as published (4)60⁠–⁠186 as published (5)163 · 0
PA6-CF4.37 (4.09⁠–⁠4.61) · 670 (62.3⁠–⁠104) · 848 · 313.4 · 3193 (185⁠–⁠202) · 6130 (113⁠–⁠160) · 4
PPA-CF7.65 (7.1⁠–⁠9.1) · 4108 (103⁠–⁠123) · 457 · 16.5 · 1220 (220⁠–⁠227) · 5255 · 1
PAHT-CF8.39 · 3103 · 337.9 · 313.8 · 2170 · 2124 · 1
PPS-CF8 (7.46⁠–⁠8) · 587 (63⁠–⁠95) · 528.2 · 35.75 · 2251 (245⁠–⁠253) · 5210 · 2

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

How the numbers are worked out

Where PA6-GF sits among the 128 rigid materials on file

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

  • PA6-GF: median, middle half as a cross
  • a PA6-GF product
  • an alternative
  • another material
  • beyond the scale

Tensile strength (XY) against tensile modulus (XY)

MPa, log scale

51020501002000.20.512510PA6-GFPA6-CFPPA-CF

Tensile modulus (XY), GPa, log scale

HDT at 0.45 MPa against price

°C

501001502002503002050100200500PA6-GFPA6-CFPPA-CFPAHT-CFPPS-CF

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
PA6-GF (this material)4.35 GPa · 482.3 MPa · 684 CAD/kg · 3186 °C · 7
PA62.1⁠–⁠3.3 GPa as published50 MPa · 1163 CAD/kg · 060⁠–⁠186 °C as published
PA6-CF4.37 GPa · 670 MPa · 8130 CAD/kg · 4193 °C · 6
PPA-CF7.65 GPa · 4108 MPa · 4255 CAD/kg · 1220 °C · 5
PAHT-CF8.39 GPa · 3103 MPa · 3124 CAD/kg · 1170 °C · 2
PPS-CF8 GPa · 587 MPa · 5210 CAD/kg · 2251 °C · 5

How the numbers are worked out

Mechanical properties

Printed flat (XY), PA6-GF typically reaches a tensile strength of 82.3 MPa at a modulus of 4.35 GPa, and breaks at 4.95 % elongation. In bending, its flexural strength is typically 134 MPa at a flexural modulus of 4.31 GPa.

PA6-GF's products spread most in elongation at break: the middle half runs 3.52⁠–⁠6.06 %

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
  • middle half and median
Tensile strength (XY)MPa · 9 products, 6 in the median
3DXTECH AMIDEX Nylon GF300255075100125
Tensile modulus (XY)scale 2–10 GPa, log · 7 products, 4 in the median
Bambu Lab PA6-GF2510
Elongation at break (XY)%, log scale · 9 products, 6 in the median
Polymaker FIBERON PA6 GF25125102050100200500

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)682.376.3⁠–⁠87.93DXTECH AMIDEX Nylon GF30, 62.8Flashforge PA6-GF20, 98.930
Tensile modulus (XY) (GPa)44.353.91⁠–⁠4.66Bambu Lab PA6-GF, 2.85Polymaker FIBERON PA6 GF25, 5.3630
Elongation at break (XY) (%)64.953.52⁠–⁠6.06Polymaker FIBERON PA6 GF25, 2.4SUNLU PA6-GF, 1330

Every PA6-GF 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

ProductTensile strength (Z)Notched Charpy impactNotched Izod impact
Bambu Lab PA6-GF27 MPaafter annealing7.2 kJ/m²after annealingnot published
Polymaker PolyMide GF61.4 MPaafter annealingnot publishednot published
Spectrum PA6 Lownot published4 kJ/m²not described as printednot published
SUNLU PA6-GFnot publishednot published10.5 kJ/m²
Polymaker FIBERON GF2560.7 MPaafter annealing10 kJ/m²after annealingnot published
FormFutura STYX PA6-GF30not published4 kJ/m²not described as printednot published

In grey, a value a product reads from a data sheet it shares, where its own sheet is silent.

Across the layers (Z), PA6-GF keeps 73 % of its flat strength and 68 % 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 %
  • PA6-GF's median share
  • an alternative

Tensile strength

Z keeps 73 % of XY, median of 3 products

020406080100020406080100100 %75 %50 %25 %

flat (XY), MPa

0 %50 %100 %

Share kept: PA6-GF 73 % · PA6-CF 49 % · PPS-CF 45 % · PPA-CF 34 % · PAHT-CF 31 %

Tensile modulus

Z keeps 68 % of XY, median of 3 products

02460246100 %75 %50 %25 %

flat (XY), GPa

0 %50 %100 %

Share kept: PA6-GF 68 % · PA6-CF 46 % · PAHT-CF 42 % · PPS-CF 36 % · PPA-CF 36 %

Elongation at break

Z keeps 85 % of XY, median of 3 products

0123401234100 %75 %50 %25 %

flat (XY), %

0 %50 %100 %

Share kept: PA6-GF 85 % · PPS-CF 77 % · PA6-CF 77 % · PAHT-CF 49 % · PPA-CF 28 %

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 PA6-GFTensile strength75 MPa27 MPa36 %
Polymaker PolyMide PA6 GFTensile strength84.5 MPa61.4 MPa73 %
Polymaker FIBERON PA6 GF25Tensile strength80.1 MPa60.7 MPa76 %
Bambu Lab PA6-GFTensile modulus2.85 GPa1.95 GPa68 %
Polymaker PolyMide PA6 GFTensile modulus4.43 GPa3.33 GPa75 %
Polymaker FIBERON PA6 GF25Tensile modulus5.36 GPa3.38 GPa63 %
Bambu Lab PA6-GFElongation at break3.9 %2.3 %59 %
Polymaker PolyMide PA6 GFElongation at break3.4 %2.9 %85 %
Polymaker FIBERON PA6 GF25Elongation at break2.4 %4 %167 %
PA6-CF (alternative)Tensile strength49 % · 3
PPA-CF (alternative)Tensile strength34 % · 1
PAHT-CF (alternative)Tensile strength31 % · 3
PPS-CF (alternative)Tensile strength45 % · 3
PA6-CF (alternative)Tensile modulus46 % · 2
PPA-CF (alternative)Tensile modulus36 % · 1
PAHT-CF (alternative)Tensile modulus42 % · 3
PPS-CF (alternative)Tensile modulus36 % · 3
PA6-CF (alternative)Elongation at break77 % · 2
PPA-CF (alternative)Elongation at break28 % · 1
PAHT-CF (alternative)Elongation at break49 % · 3
PPS-CF (alternative)Elongation at break77 % · 3

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 MPa82.376.3⁠–⁠87.9660.73
Tensile modulus GPa4.353.91⁠–⁠4.6643.333
Elongation at break %4.953.52⁠–⁠6.0662.93
Flexural strength MPa134120⁠–⁠136575.52
Flexural modulus GPa4.313.67⁠–⁠4.6452.572

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. How XY and Z differ.

Thermal properties

PA6-GF's HDT is typically 186 °C under 0.45 MPa and 157⁠–⁠158 °C under 1.8 MPa, with its glass transition typically at 70 °C. Semicrystalline, it carries light load well above its glass transition. As published, Vicat softening is typically 211 °C and melting typically 217 °C.

Most PA6-GF products deflect at 181⁠–⁠191 °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
  • middle half and median
HDT at 0.45 MPascale 160–210 °C · 10 products, 7 in the median
Stratasys PA6/66-GF30-FRSUNLU PA6-GF160170180190200210
Glass transition (Tg)scale 64–72 °C · 5 products, all in the median
SUNLU PA6-GFPolymaker FIBERON PA6 GF256466687072
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)7186181⁠–⁠191Stratasys PA6/66-GF30-FR, 161SUNLU PA6-GF, 20530
Glass transition (Tg) (°C)57067⁠–⁠70SUNLU PA6-GF, 65Polymaker FIBERON PA6 GF25, 7000

Every PA6-GF 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

ProductHDT at 1.8 MPa
Bambu Lab PA6-GF158 °Cafter annealing
Polymaker PolyMide GF157 °C
Spectrum PA6 Low65 °Cnot described as printed
Polymaker FIBERON GF25157 °Cafter annealing
FormFutura STYX PA6-GF3065 °Cnot described as printed

In grey, a value a product reads from a data sheet it shares, where its own sheet is silent.

Printing on the H2C

PA6-GF softens near 186 °C, above the H2C's 65 °C chamber; 1 product asks 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
  • one end given ("at least")
  • the H2C's limit, and beyond it
  • a product
  • PA6-GF: its products' median and middle half
  • as published, under each sheet's own test

Printing it on the H2C

Nozzle260⁠–⁠290 °C, accepted by most of the 9 products that give a window · the H2C reaches 350 °C
Bed7 of 11 products give a window; 2 give one end only · the H2C reaches 120 °C
Heated chamber25⁠–⁠60 °C, accepted by most of the 3 products that give a window; 3 need none · the H2C reaches 65 °C
Drying80⁠–⁠110 °C, 6⁠–⁠12 h, 5 products

In service

Glass transition (Tg)5 products
70 °C
HDT at 1.8 MPa3 products
157 °C
HDT at 0.45 MPa7 products
186 °C
Vicat softening temperature2 products, as published
210⁠–⁠212 °C
Melting temperature4 products, as published
215⁠–⁠225 °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
Nozzle260⁠–⁠290 °C9350 °C
Bed25⁠–⁠50 °C; 40⁠–⁠50 °C; 60⁠–⁠70 °C; 80⁠–⁠100 °C; 80⁠–⁠100 °C; 80⁠–⁠110 °C; 120⁠–⁠140 °C7120 °C
Heated chamber25⁠–⁠60 °C365 °C
Drying80⁠–⁠110 °C, 6⁠–⁠12 h5—
Glass transition (Tg)70 °C (67⁠–⁠70 °C)5—
HDT at 1.8 MPa157 °C3—
HDT at 0.45 MPa186 °C (181⁠–⁠191 °C)7—
Vicat softening temperature210⁠–⁠212 °C2—
Melting temperature215⁠–⁠225 °C4—

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 PA6-GF productsBambu Lab Filament Guide (PA6-GF column)
Nozzle260⁠–⁠290 °C most products that give one260 - 290 ℃
Bed80⁠–⁠100 °C 3 of 7 that give oneSmooth PEI Plate (100 - 120 °C)
Textured PEI Plate (100 - 120 °C)
Heated chamber25⁠–⁠60 °C most products that give oneenclosure required
Drying80⁠–⁠110 °C, 6⁠–⁠12 h 9 of 11 products call for it; 2 more give it as optional80 °C for 8–12 h
Nozzle typehardened 8 of 11 products' sheets ask for one; the Bambu Lab Filament Guide says hardened for 3 morehardened

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

Three products publish values measured after annealing, on schedules from 80 °C for 12 h to 100 °C for 16 h.

What makers say about printing it

Moisture sensitivity

  • PolyMide™ PA6-GF is sensitive to moisture and should always be stored and used under dry conditions (relative humidity below 20%). Polymaker PolyMide PA6 GF, data sheet, p. 5

Nozzle wear

More from makers: printing advice, warping and shrinkage, supports and removal, adhesion between layers and odour and emissions

Printing advice

  • Additionally, a nozzle diameter of at least 0.6 mm should be used to prevent clogging and ensure smooth extrusion. Extrudr DURAPRO PA6 GF, data sheet, p. 1

Warping and shrinkage

Supports and removal

Adhesion between layers

  • The material exhibits excellent thermal and mechanical properties without sacrificing the layer adhesion. Polymaker PolyMide PA6 GF, data sheet, p. 2

Odour and emissions

Products

11 products from 10 makers; the most from Polymaker (2).

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

Compare the 11 products

Uses, limitations and chemicals

What it is sold for

What makers warn about

Finish and accuracy

Chemicals and environment

ExposureWhat makers say
FlammabilityFlammable, in its one statement
Acid resistanceNot resistant, in all 3 statements
Alkali resistanceNot resistant, in 2 of 3 statements
Organic solvent resistanceMixed, 2 statements disagree
Oil and grease resistanceMixed, 2 statements disagree
Water solubilityInsoluble, in its one statement

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

Resin reference data (for plain PA6, where no maker of these products speaks): it has limited resistance to steam, 100 °C and to water or aqueous solutions at high temperature; it is not resistant to steam sterilization, 134 °C, over 50 cycles (DIN 58946 parts 1-5). Fillers, pigments and printing change this, so it does not stand for these products.

Density and price

PA6-GF's density is typically 1,310 kg/m³, the middle half 1,200⁠–⁠1,340 kg/m³, across 9 products. PA6-GF typically costs 84 CAD/kg, across the 3 products with a regular price in the sample; the lowest is Bambu Lab PA6-GF at 77 CAD/kg.

ProductPrice
Bambu Lab PA6-GF77 CAD/kg
Polymaker FIBERON PA684 CAD/kg
FormFutura STYX PA6-GF30146 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

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

The 14 properties, lowest to highest
PropertyProductsLowest–highest
Fibre content910⁠–⁠30 %
Water absorption61⁠–⁠9 %
Melt mass-flow rate53⁠–⁠15.9 g/10 min
Crystallization temperature3175⁠–⁠183 °C
Decomposition temperature3330⁠–⁠437 °C
Elongation at yield33.2⁠–⁠5 %
Mould shrinkage20.4⁠–⁠0.9 %
Compression strength122.3⁠–⁠72.4 MPa
Flexural elongation at break13.1⁠–⁠4.1 %
Hardness182.5 Shore (scale not specified by source)
Impact strength, test unclear155.8 kJ/m²
Melt volume-flow rate1140 cm³/10 min
Oxygen index134.1⁠–⁠38 %
Surface resistivity11 × 10¹² Ω

Sources

22 documents from 10 publishers (12 data sheets, 6 makers' product pages and guides, 3 safety data sheets and 1 printer document), read 10 Sep–19 Oct 2026. Each value on PA6-GF'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 11 products.

The Bambu Lab Filament Guide (print settings per material type): read for 7 products whose own sheets are silent.

Every document (22), by publisher
PublisherDocumentsValuesProducts
Polymaker5532
SUNLU3251
Bambu Lab3241
Spectrum3131
Stratasys1541
Extrudr1131
Flashforge1131
3DXTECH191
Fabru181
FormFutura142