Filament Atlas

PETG-CF

Carbon-Fiber-Reinforced PETG

24 products from 21 makers. Bambu Lab sells its own filament of this material for the H2C.

Tensile modulus (XY)
3.7GPa
0.210 (log)
11 products · middle half 2.93–4.08
Tensile strength (XY)
49.4MPa
0125
12 products · middle half 43–53.7
Tensile strength (Z)
28.5MPa
060
4 products · middle half 27–32
Notched Charpy impact
8kJ/m²
150 (log)
5 products · middle half 4–15.7
HDT at 0.45 MPa
72°C
50300
11 products · middle half 71–75
Price
41CAD/kg
0300
3 products · 35–56

PETG-CF is a carbon-fibre-filled PETG copolyester. Makers sell it for end-use parts that do not need the full strength of carbon, and for structural parts and fixtures. Its HDT at 0.45 MPa is 72 °C, near its glass transition, and a maker notes the added stiffness costs impact resistance. On the H2C every product needs a hardened nozzle, and most print at 240–260 °C without chamber heat.

Partly documented Price rests on 3 products and tensile strength (Z) 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
240⁠–⁠260 °C
most products that give one
Bed
70 °C
most products that give one
Heated chamber
none needed
19 of 24 products
Drying
40–80 °C, 2–12 h
15 of 24 products call for it; 9 more give it as optional
Nozzle type
hardened
14 of 24 products' sheets ask for one; the Bambu Lab Filament Guide says hardened for 10 more

No product's setting is beyond the H2C's limits: nozzle 350 °C, bed 120 °C, heated chamber 65 °C.

Among the materials

Carbon fibre adds little to PETG's heat resistance: PETG-CF's HDT at 0.45 MPa is 72 °C against 70 °C. Against PETG-GF, PETG-CF is 58 % stiffer, 10 % stronger flat and 7 % stronger across the layers. Among the materials, PETG-CF has a high tensile modulus (XY) and a low HDT at 0.45 MPa and price: each is in the top or bottom quarter of the materials that publish it. The rest of its key properties sit in the middle half.

Against its alternatives, PETG-CF has the highest tensile strength

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

  • PETG-CF: its products' median and middle half
  • an alternative
  • lowest to highest
  • each material's median (top row)
All materials
PETG-CF24 products
PETG72 products
PETG-GF5 products
PLA-CF19 products
ABS-CF11 products
ASA-CF17 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)
PETG-CF (this material)3.7 (2.93⁠–⁠4.08) · 1149.4 (43⁠–⁠53.7) · 1228.5 (27⁠–⁠32) · 48 (4⁠–⁠15.7) · 572 (71⁠–⁠75) · 1141 · 3
PETG1.69 (1.42⁠–⁠1.95) · 2447 (40.3⁠–⁠50.6) · 3430.2 (28⁠–⁠36.5) · 166 (4.76⁠–⁠8) · 1070 (69⁠–⁠71) · 3226 (25⁠–⁠32) · 11
PETG-GF2.33 · 345 · 326.6 · 2—76 · 137 · 1
PLA-CF2.8 (2.26⁠–⁠3.65) · 742.3 (39.3⁠–⁠47) · 1025.3 (24.1⁠–⁠26) · 56.08 · 255 (55⁠–⁠57) · 640 · 2
ABS-CF4.35 (3.75⁠–⁠4.76) · 444 (36.2⁠–⁠47) · 728 · 316.1 · 190 (78⁠–⁠91) · 545 · 2
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

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

How the numbers are worked out

Where PETG-CF sits among the 128 rigid materials on file

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

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

Tensile strength (XY) against tensile modulus (XY)

MPa, log scale

51020501002000.20.512510PETG-CFPETGPLA-CFABS-CFASA-CF

Tensile modulus (XY), GPa, log scale

HDT at 0.45 MPa against price

°C

501001502002503002050100200500PETG-CFPETGPETG-GFABS-CFASA-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
PETG-CF (this material)3.7 GPa · 1149.4 MPa · 1241 CAD/kg · 372 °C · 11
PETG1.69 GPa · 2447 MPa · 3426 CAD/kg · 1170 °C · 32
PETG-GF2.33 GPa · 345 MPa · 337 CAD/kg · 176 °C · 1
PLA-CF2.8 GPa · 742.3 MPa · 1040 CAD/kg · 255 °C · 6
ABS-CF4.35 GPa · 444 MPa · 745 CAD/kg · 290 °C · 5
ASA-CF3.91 GPa · 639.1 MPa · 765 CAD/kg · 5101 °C · 5

How the numbers are worked out

Mechanical properties

Printed flat (XY), PETG-CF typically reaches a tensile strength of 49.4 MPa at a modulus of 3.7 GPa, and breaks at 5.7 % elongation. In bending, its flexural strength is typically 80 MPa at a flexural modulus of 3.21 GPa.

PETG-CF's products spread most in notched Charpy impact: the middle half runs 4⁠–⁠15.7 kJ/m²

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
  • beyond the scale
Tensile strength (XY)scale 30–60 MPa · 23 products, 12 in the median
SUNLU PETG Carbon FiberRaise3D Hyper Speed PETG CF30405060
Tensile modulus (XY)scale 1–5 GPa, log · 16 products, 11 in the median
Eryone PETG-CF125
Tensile strength (Z)MPa · 4 products, all in the median
Eryone PETG-CF0204060
Elongation at break (XY)%, log scale · 20 products, 11 in the median
Eryone PETG-CFSUNLU PETG Carbon Fiber125102050100200500
Notched Charpy impactkJ/m², log scale · 9 products, 5 in the median
Polymaker Fiberon PETG-rCF08125102050

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)1249.443⁠–⁠53.7SUNLU PETG Carbon Fiber, 32Raise3D Hyper Speed PETG CF, 60110
Tensile modulus (XY) (GPa)113.72.93⁠–⁠4.08Eryone PETG-CF, 1.773DXTECH CarbonX Carbon Fiber PETG, 5.2350
Tensile strength (Z) (MPa)428.527⁠–⁠32Eryone PETG-CF, 24.1Polymaker Fiberon PETG-rCF08, 41.100
Elongation at break (XY) (%)115.73.2⁠–⁠7.5Eryone PETG-CF, 1.9SUNLU PETG Carbon Fiber, 1490
Notched Charpy impact (kJ/m²)584⁠–⁠15.7Polymaker Fiberon PETG-rCF08, 4Nanovia PETG CF, 2040

Every PETG-CF 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 PETG Carbon Fiber7 kJ/m²not published
Flashforge PETGCF103 kJ/m²not published
3D4Makers PETGCarbonnot published76.4 Shore D
FormFutura CarbonFil CF034.6 kJ/m²not described as printednot published
SIDDAMENT PETG Carbon20 kJ/m²not described as printednot published
3DJake easyPETG CF4 kJ/m²not described as printednot published
Nobufil PETG CF2 kJ/m²orientation not statednot published

Across the layers (Z), PETG-CF keeps 69 % of its flat strength and 71 % 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 %
  • PETG-CF's median share
  • an alternative

Tensile strength

Z keeps 69 % of XY, median of 3 products

02040600204060100 %75 %50 %25 %

flat (XY), MPa

0 %50 %100 %

Share kept: PETG-CF 69 % · PETG 69 % · ASA-CF 60 % · ABS-CF 59 % · PLA-CF 58 % · PETG-GF 47 %

Tensile modulus

Z keeps 71 % of XY, median of 3 products

0123401234100 %75 %50 %25 %

flat (XY), GPa

0 %50 %100 %

Share kept: PETG-GF 90 % · PETG 88 % · PLA-CF 77 % · PETG-CF 71 % · ABS-CF 59 % · ASA-CF 56 %

Elongation at break

Z keeps 45 % of XY, median of 3 products

02.557.51012.502.557.51012.5100 %75 %50 %25 %

flat (XY), %

0 %50 %100 %

Share kept: ABS-CF 102 % · ASA-CF 91 % · PETG-GF 89 % · PETG 59 % · PETG-CF 45 % · PLA-CF 43 %

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 PETG-CFTensile strength35 MPa29 MPa83 %
Polymaker Fiberon PETG-rCF08Tensile strength59.8 MPa41.1 MPa69 %
Eryone PETG-CFTensile strength48.7 MPa24.1 MPa, Z (X-Z)49 %
Bambu Lab PETG-CFTensile modulus2.46 GPa1.34 GPa54 %
Polymaker Fiberon PETG-rCF08Tensile modulus3.71 GPa2.65 GPa71 %
Eryone PETG-CFTensile modulus1.77 GPa1.7 GPa, Z (X-Z)96 %
Bambu Lab PETG-CFElongation at break10 %4.7 %45 %
Polymaker Fiberon PETG-rCF08Elongation at break5.7 %1.9 %33 %
Eryone PETG-CFElongation at break1.9 %1.5 %, Z (X-Z)79 %
PETG (alternative)Tensile strength69 % · 13
PETG-GF (alternative)Tensile strength47 % · 1
PLA-CF (alternative)Tensile strength58 % · 5
ABS-CF (alternative)Tensile strength59 % · 3
ASA-CF (alternative)Tensile strength60 % · 4
PETG (alternative)Tensile modulus88 % · 10
PETG-GF (alternative)Tensile modulus90 % · 1
PLA-CF (alternative)Tensile modulus77 % · 5
ABS-CF (alternative)Tensile modulus59 % · 1
ASA-CF (alternative)Tensile modulus56 % · 4
PETG (alternative)Elongation at break59 % · 13
PETG-GF (alternative)Elongation at break89 % · 1
PLA-CF (alternative)Elongation at break43 % · 5
ABS-CF (alternative)Elongation at break102 % · 2
ASA-CF (alternative)Elongation at break91 % · 3

Tensile strength: one more product is in the median across the layers but gives no share, with no flat value of the same test from the same sheet: QIDI PETG CF (its flat and across values from two documents).

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 MPa49.443⁠–⁠53.71228.527⁠–⁠324
Tensile modulus GPa3.72.93⁠–⁠4.08111.73
Elongation at break %5.73.2⁠–⁠7.5111.93
Flexural strength MPa8070⁠–⁠85947.92
Flexural modulus GPa3.212.99⁠–⁠3.7891.592

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

PETG-CF's HDT is typically 72 °C under 0.45 MPa and 68 °C under 1.8 MPa, with its glass transition typically at 69 °C. As published, Vicat softening is typically 82 °C.

Most PETG-CF products deflect at 71⁠–⁠75 °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 68–78 °C · 17 products, 11 in the median
Polymaker Fiberon PETG-rCF08QIDI PETG CF687072747678
HDT at 1.8 MPascale 65–69 °C · 8 products, 6 in the median
Raise3D Hyper Speed PETG CFRecreus PET-G CF6566676869
Glass transition (Tg)scale 65–80 °C · 10 products, all in the median
SUNLU PETG Carbon FiberNanovia PETG CF65707580
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)117271⁠–⁠75Polymaker Fiberon PETG-rCF08, 69QIDI PETG CF, 7760
HDT at 1.8 MPa (°C)66866⁠–⁠69Raise3D Hyper Speed PETG CF, 65Recreus PET-G CF, 6920
Glass transition (Tg) (°C)106968⁠–⁠79SUNLU PETG Carbon Fiber, 65Nanovia PETG CF, 8000

Every PETG-CF 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

PETG-CF prints within the H2C's limits and softens near 72 °C, above its 65 °C chamber

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
  • PETG-CF: its products' median and middle half
  • as published, under each sheet's own test

Printing it on the H2C

Nozzle240⁠–⁠260 °C, accepted by most of the 20 products that give a window · the H2C reaches 350 °C
Bed70 °C, accepted by most of the 20 products that give a window · the H2C reaches 120 °C
Heated chamber35⁠–⁠50 °C, accepted by most of the 3 products that give a window; 19 need none · the H2C reaches 65 °C
Drying40⁠–⁠80 °C, 2⁠–⁠12 h, 16 products

In service

HDT at 1.8 MPa6 products
68 °C
Glass transition (Tg)10 products
69 °C
HDT at 0.45 MPa11 products
72 °C
Vicat softening temperature12 products, as published
72⁠–⁠85 °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
Nozzle240⁠–⁠260 °C20350 °C
Bed70 °C20120 °C
Heated chamber35⁠–⁠50 °C365 °C
Drying40⁠–⁠80 °C, 2⁠–⁠12 h16—
HDT at 1.8 MPa68 °C (66⁠–⁠69 °C)6—
Glass transition (Tg)69 °C (68⁠–⁠79 °C)10—
HDT at 0.45 MPa72 °C (71⁠–⁠75 °C)11—
Vicat softening temperature72⁠–⁠85 °C12—

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 PETG-CF productsBambu Lab Filament Guide (PETG-CF column)
Nozzle240⁠–⁠260 °C most products that give one240 - 270 ℃
Bed70 °C most products that give oneSmooth PEI Plate (60 - 80 °C)
Textured PEI Plate (60 - 80 °C)
Cool Plate SuperTack (60-70 °C)
Heated chambernone; sheets that give one say 35⁠–⁠50 °C 19 of 24 productsenclosure not needed
Drying40⁠–⁠80 °C, 2⁠–⁠12 h 15 of 24 products call for it; 9 more give it as optionaloptional: 65 °C for 8 h
Nozzle typehardened 14 of 24 products' sheets ask for one; the Bambu Lab Filament Guide says hardened for 10 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

One product publishes values measured after annealing, at 65 °C for 8 h.

What makers say about printing it

Nozzle wear

Warping and shrinkage

  • The specially formulated blend minimizes the risk of warping and nozzle sticking, while still providing a smooth and consistent print quality. Bambu Lab PETG-CF, data sheet, p. 1
More from makers: moisture sensitivity, printing advice, supports and removal and odour and emissions

Moisture sensitivity

  • Fiberon™ PETG-rCF08 is sensitive to moisture and should always be stored and used under dry conditions (relative humidity below 20%). Polymaker Fiberon PETG-rCF08, data sheet, p. 1

Printing advice

  • After the printing process, it is recommended to dry the model in an oven at 70°C for 1-3 hours in order to increase the strength of the model. Flashforge PETGCF10, data sheet, p. 3

Supports and removal

Odour and emissions

Products

24 products from 21 makers; the most from FormFutura (2), SIDDAMENT (2) and Spectrum (2).

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

Compare the 24 products

Uses, limitations and chemicals

What it is sold for

What makers warn about

Finish and accuracy
  • The 10% addition of carbon fibres enables to obtain matte surfaces of printed items, which greatly improves the aesthetic properties of printed items. Spectrum PET-G Carbon, data sheet, p. 1
  • This results in 3D prints with a magnificent carbon finish and no visible layers. FormFutura CarbonFil CF03, data sheet, p. 1
  • It prints with great precision and superb layer adhesion. FormFutura CarbonFil CF03, data sheet, p. 1
  • dimensional stability, precise details QIDI PETG CF, data sheet, p. 2

Chemicals and environment

ExposureWhat makers say
Water solubilityInsoluble, in its one statement
Acid resistanceNot resistant, in its one statement
Alkali resistanceNot resistant, in its one statement
Organic solvent resistanceLimited, in 1 of 2 statements; the other gives no rating
Oil and grease resistanceLimited, in its one statement
FlammabilityFlammable, in its one statement
UV and outdoorDescribed in words, with no rating, 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.

Density and price

PETG-CF's density is typically 1,290 kg/m³, the middle half 1,260⁠–⁠1,320 kg/m³, across 23 products. PETG-CF typically costs 41 CAD/kg, across the 3 products with a regular price in the sample; the lowest is eSUN PETG CF at 35 CAD/kg. QIDI Canada lists QIDI PETG CF, out of stock when sampled, with no regular price recorded.

ProductPrice
Bambu Lab PETG-CF41 CAD/kg
Polymaker Fiberon PETG-rCF0856 CAD/kg
eSUN PETG CF35 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

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

The 12 properties, lowest to highest
PropertyProductsLowest–highest
Fibre content163⁠–⁠20 %
Melt mass-flow rate95⁠–⁠19.3 g/10 min
Water absorption80.1⁠–⁠1 %
Melting temperature3190⁠–⁠225 °C
Decomposition temperature2370⁠–⁠425 °C
Elongation at yield23⁠–⁠3.8 %
Impact strength, test unclear23⁠–⁠8.5 kJ/m²
Melt volume-flow rate23.7⁠–⁠35 cm³/10 min
Tensile strain at strength22.3⁠–⁠2.7 %
Continuous service temperature180 °C
Hardness171 Shore (scale not specified by source)
Mould shrinkage10.2⁠–⁠0.3 %

Sources

44 documents from 21 publishers (29 data sheets, 10 makers' product pages and guides, 4 safety data sheets and 1 printer document), read 10 Sep–19 Oct 2026. Each value on PETG-CF'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 23 products.

The Bambu Lab Filament Guide (print settings per material type): read for 19 products whose own sheets are silent.

Every document (44), by publisher
PublisherDocumentsValuesProducts
Spectrum6152
Extrudr3381
FormFutura3232
Bambu Lab3221
3DXTECH391
QIDI2241
3DJake2161
SIDDAMENT2142
SUNLU2131
Fiberlogy2121
Recreus2111
3D4Makers2101
and 9 more publishers, with 10 documents