PETG-GF
Glass-Fiber-Reinforced PETG
5 products from 5 makers. Bambu Lab lists PETG-GF as a material type for the H2C; the listing covers the type, not each brand.
- Tensile modulus (XY)
- 2.33GPa
- 3 products · 2.2–2.81
- Tensile strength (XY)
- 45MPa
- 3 products · 42–53.6
- Tensile strength (Z)
- 26.6MPa
- 2 products · 25.1–28
- Not published:
- notched Charpy impact.
- HDT at 0.45 MPa
- 76°C
- one product
- Price
- 37CAD/kg
- one product
PETG-GF is a glass-fibre-filled PETG copolyester. Makers sell it for structural components and outdoor parts, and stress its dimensional stability and low warping. Its glass transition is 75 °C. On the H2C it prints at 250–270 °C, but makers call for a hardened steel or reinforced nozzle.
Partly documented HDT at 0.45 MPa and price rest on 1 product each, tensile strength (Z) on 2 products, tensile modulus (XY) and tensile strength (XY) on 3 products each and notched Charpy impact is not published. 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.
On the H2C
Printing in full- Nozzle
- 250–270 °C
- most products that give one
- Bed
- 70 °C
- most products that give one
- Heated chamber
- 20 °C
- one product
- Drying
- 60–70 °C, 3–8 h
- 3 of 5 products call for it; 1 more gives it as optional
- Nozzle type
- hardened
- 3 of 5 products' sheets ask for one; the rest are silent
No product's setting is beyond the H2C's limits: nozzle 350 °C, bed 120 °C, heated chamber 65 °C.
Among the materials
Against PETG, PETG-GF is 38 % stiffer and 12 % weaker across the layers. Against PETG-CF, PETG-GF is 37 % less stiff, 9 % weaker flat and 7 % weaker across the layers. Among the materials, PETG-GF has a high density and a low elongation at break (XY) 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.
PETG-GF costs less than PETG-CF, ABS-CF and ASA-GF and others
How does it compare with what an engineer would buy instead?
- PETG-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
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
| Material | Modulus (XY) (GPa) | Strength (XY) (MPa) | Strength (Z) (MPa) | Notched Charpy (kJ/m²) | HDT 0.45 MPa (°C) | Price (CAD/kg) |
|---|---|---|---|---|---|---|
| PETG-GF (this material) | 2.33 · 3 | 45 · 3 | 26.6 · 2 | — | 76 · 1 | 37 · 1 |
| PETG | 1.69 (1.42–1.95) · 24 | 47 (40.3–50.6) · 34 | 30.2 (28–36.5) · 16 | 6 (4.76–8) · 10 | 70 (69–71) · 32 | 26 (25–32) · 11 |
| PETG-CF | 3.7 (2.93–4.08) · 11 | 49.4 (43–53.7) · 12 | 28.5 (27–32) · 4 | 8 (4–15.7) · 5 | 72 (71–75) · 11 | 41 · 3 |
| ABS-CF | 4.35 (3.75–4.76) · 4 | 44 (36.2–47) · 7 | 28 · 3 | 16.1 · 1 | 90 (78–91) · 5 | 45 · 2 |
| ASA-GF | 2.31 · 2 | 39 · 3 | 24.6 · 2 | 8 as published (1) | 93 · 2 | 96 · 1 |
| ASA-CF | 3.91 (2.35–4.43) · 6 | 39.1 (39–45.8) · 7 | 27.5 (23–30.3) · 4 | 5.76 · 3 | 101 (97–103) · 5 | 65 (54–120) · 5 |
PETG-GF publishes no notched Charpy impact.
Where PETG-GF sits among the 128 rigid materials on file
Where is it in the landscape: stiffness against strength, heat resistance against price?
- PETG-GF: median, middle half as a cross
- a PETG-GF product
- an alternative
- another material
- beyond the scale
Tensile strength (XY) against tensile modulus (XY)
MPa, log scale
Tensile modulus (XY), GPa, log scale
HDT at 0.45 MPa against price
°C
Price, CAD/kg, log scale
Grey points are every other rigid material's medians; the alternatives are named.
The figure as a table
| Material | Tensile modulus (XY) | Tensile strength (XY) | Price | HDT at 0.45 MPa |
|---|---|---|---|---|
| PETG-GF (this material) | 2.33 GPa · 3 | 45 MPa · 3 | 37 CAD/kg · 1 | 76 °C · 1 |
| PETG | 1.69 GPa · 24 | 47 MPa · 34 | 26 CAD/kg · 11 | 70 °C · 32 |
| PETG-CF | 3.7 GPa · 11 | 49.4 MPa · 12 | 41 CAD/kg · 3 | 72 °C · 11 |
| ABS-CF | 4.35 GPa · 4 | 44 MPa · 7 | 45 CAD/kg · 2 | 90 °C · 5 |
| ASA-GF | 2.31 GPa · 2 | 39 MPa · 3 | 96 CAD/kg · 1 | 93 °C · 2 |
| ASA-CF | 3.91 GPa · 6 | 39.1 MPa · 7 | 65 CAD/kg · 5 | 101 °C · 5 |
Mechanical properties
Printed flat (XY), PETG-GF typically reaches a tensile strength of 45 MPa at a modulus of 2.33 GPa, and breaks at 2.95 % elongation. In bending, its flexural strength is typically 78 MPa at a flexural modulus of 2.74 GPa.
| As each sheet publishes it | iSANMATE PETG Glass | Eryone PETG-GF | Nanovia PETG GF UV | QIDI PETG GF | Nobufil PETG GF |
|---|---|---|---|---|---|
| Tensile strength (XY) | 53 MPanot described as printed | 53.6 MPa | 42 MPa | 45 MPa | 56 MPaorientation not stated |
| Tensile modulus (XY) | not published | 2.33 GPa | 2.81 GPa | 2.2 GPa | not published |
| Tensile strength (Z) | not published | 25.1 MPaZ (X-Z) | not published | 28 MPa | not published |
| Elongation at break (XY) | not published | 1.9 % | not published | 4 % | 8 %orientation not stated |
| Notched Izod impact | not published | not published | not published | not published | 1.5 kJ/m²orientation not stated |
Across the layers (Z), PETG-GF keeps 47 % of its flat strength and 90 % of its flat stiffness
What does a printed part lose across the layers (Z) against flat (XY), and is that usual?
- a product
- equal share: 100, 75, 50 and 25 %
- PETG-GF's median share
- an alternative
Tensile strength
Z keeps 47 % of XY, median of 1 product
flat (XY), MPa
Share kept: PETG-CF 69 % · PETG 69 % · ASA-GF 67 % · ASA-CF 60 % · ABS-CF 59 % · PETG-GF 47 %
Tensile modulus
Z keeps 90 % of XY, median of 1 product
flat (XY), GPa
Share kept: PETG-GF 90 % · PETG 88 % · ASA-GF 82 % · PETG-CF 71 % · ABS-CF 59 % · ASA-CF 56 %
Elongation at break
Z keeps 89 % of XY, median of 1 product
flat (XY), %
Share kept: ABS-CF 102 % · ASA-CF 91 % · PETG-GF 89 % · PETG 59 % · PETG-CF 45 % · ASA-GF 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
| Product | Property | Flat (XY) | Across (Z) | Z as a share of XY |
|---|---|---|---|---|
| Eryone PETG-GF | Tensile strength | 53.6 MPa | 25.1 MPa, Z (X-Z) | 47 % |
| Eryone PETG-GF | Tensile modulus | 2.33 GPa | 2.11 GPa, Z (X-Z) | 90 % |
| Eryone PETG-GF | Elongation at break | 1.9 % | 1.7 %, Z (X-Z) | 89 % |
| PETG (alternative) | Tensile strength | 69 % · 13 | ||
| PETG-CF (alternative) | Tensile strength | 69 % · 3 | ||
| ABS-CF (alternative) | Tensile strength | 59 % · 3 | ||
| ASA-GF (alternative) | Tensile strength | 67 % · 2 | ||
| ASA-CF (alternative) | Tensile strength | 60 % · 4 | ||
| PETG (alternative) | Tensile modulus | 88 % · 10 | ||
| PETG-CF (alternative) | Tensile modulus | 71 % · 3 | ||
| ABS-CF (alternative) | Tensile modulus | 59 % · 1 | ||
| ASA-GF (alternative) | Tensile modulus | 82 % · 2 | ||
| ASA-CF (alternative) | Tensile modulus | 56 % · 4 | ||
| PETG (alternative) | Elongation at break | 59 % · 13 | ||
| PETG-CF (alternative) | Elongation at break | 45 % · 3 | ||
| ABS-CF (alternative) | Elongation at break | 102 % · 2 | ||
| ASA-GF (alternative) | Elongation at break | 36 % · 1 | ||
| ASA-CF (alternative) | Elongation at break | 91 % · 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 GF (its flat and across values from two documents).
Flat and across the layers, property by property
Flat and across the layers
| Property | Printed flat (XY) | Across the layers (Z) | Z as a share of XY | ||
|---|---|---|---|---|---|
| Median | Products | Median | Products | ||
| Tensile strength MPa | 45 | 3 | 26.6 | 2 | 47 %1 product |
| Tensile modulus GPa | 2.33 | 3 | 2.11 | 1 | 90 %1 product |
| Elongation at break % | 2.95 | 2 | 1.7 | 1 | 89 %1 product |
| Flexural strength MPa | 78 | 2 | — | — | |
| Flexural modulus GPa | 2.74 | 2 | — | — | |
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
Its products put HDT at 76 °C under 0.45 MPa, against a glass transition of 66–80 °C. As published, Vicat softening is typically 79 °C.
| As each sheet publishes it | iSANMATE PETG Glass | Eryone PETG-GF | Nanovia PETG GF UV | QIDI PETG GF | Nobufil PETG GF |
|---|---|---|---|---|---|
| HDT at 0.45 MPa | not published | 80 °Cnot described as printed | not published | 76 °Cglassy: counts | not published |
| Glass transition (Tg) | not published | 75 °C | 80 °C | 66 °C | not published |
Not published for PETG-GF: HDT at 1.8 MPa.
Printing on the H2C
PETG-GF prints within the H2C's limits and softens near 76 °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-GF: its products' median and middle half
- as published, under each sheet's own test
Printing it on the H2C
In service
°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 property | Most products, or the median | Products | H2C limit |
|---|---|---|---|
| Nozzle | 250–270 °C | 5 | 350 °C |
| Bed | 70 °C | 5 | 120 °C |
| Heated chamber | 20 °C | 1 | 65 °C |
| Drying | 60–70 °C, 3–8 h | 4 | — |
| Glass transition (Tg) | 75 °C | 3 | — |
| HDT at 0.45 MPa | 76 °C | 1 | — |
| Vicat softening temperature | 72–85 °C | 2 | — |
Windows read from the Bambu Lab Filament Guide are not shaded: the guide speaks for every product that reads it.
| Setting | iSANMATE PETG Glass | Eryone PETG-GF | Nanovia PETG GF UV | QIDI PETG GF | Nobufil PETG GF |
|---|---|---|---|---|---|
| Nozzle | 250–270 °C | 250–280 °C | 220–240 °C | 250–275 °C | 245–265 °C |
| Bed | 90–100 °C | 60–70 °C | 80–90 °C | 60–80 °C | 70–90 °C |
| Heated chamber | not stated; within, by its kind | not published | 20 °C | not stated; within, by its kind | not stated; within, by its kind |
| Drying | not published | 60–70 °C for 4–8 h | optional: 60 °C for 4 h | 70 °C for 4–6 h | 60–70 °C for 3–6 h |
| Nozzle type | not stated | not stated | hardened | hardened | hardened |
In grey, a setting a product reads from a data sheet it shares or from the Bambu Lab Filament Guide, where its own sheet is silent, or a chamber all of them leave silent, read from what the makers of its kind of plastic state.
What makers say about printing it
Nozzle wear
A reinforced nozzle, suitable for abrasive materials is recommended.
Nanovia PETG GF UV, data sheet, p. 10.4–0.8 mm / Hardened steel nozzle or harder
QIDI PETG GF, maker's product page or guide, p. 1Nozzle hardened
Nobufil PETG GF, data sheet, p. 1
Printing advice
80-90°C / 2-4 h (optional; support parts)
QIDI PETG GF, maker's product page or guide, p. 1
Moisture sensitivity
Blast Drying Oven: 70°C / 4-6 h
QIDI PETG GF, maker's product page or guide, p. 1
More from makers: warping and shrinkage and odour and emissions
Warping and shrinkage
This ease of printing is made possible by the addition of glass fibres which strongly reduce the warping of the polymer during the 3D printing process.
Nanovia PETG GF UV, data sheet, p. 1Parts printed with this material are not only strong and durable but also exhibit excellent dimensional stability
Eryone PETG-GF, data sheet, p. 1Highlights firm bed adhesion, stable base, and no warping during printing.
iSANMATE PETG Glass Fiber, maker's product page or guide, p. 1
Odour and emissions
Odor / Low odor
QIDI PETG GF, data sheet, p. 3
Products
5 products, one from each of 5 makers.
Uses, limitations and chemicals
What it is sold for
By combining glass fibres, anti-UV additives and PETG, natively waterproof and resistant to temperatures up to 80 °C, Nanovia PETG GF UV is the perfect filament for parts subjected to outdoor conditions.
Nanovia PETG GF UV, data sheet, p. 1It is particularly suitable for manufacturing structural components or outdoor models that require high impact resistance and durability against drops.
Eryone PETG-GF, data sheet, p. 1iSANMATE PETG Glass Fiber filament combines strength and precision, ideal for demanding 3D printing projects.
iSANMATE PETG Glass Fiber, maker's product page or guide, p. 1
What makers warn about
The product is not approved for medical applications.
Nanovia PETG GF UV, safety data sheet, p. 2
Finish and accuracy
featuring a fine matte and frosted texture on the surface.
Eryone PETG-GF, data sheet, p. 1
Chemicals and environment
| Exposure | What makers say |
|---|---|
| UV and outdoor | Described in words, with no rating, in its one statement |
| Organic solvent resistance | Described 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.
Where no maker of these products speaks to an exposure, reference data for plain PETG resin is shown. Fillers, pigments and printing change it, so it does not stand for these products.
| PETG resin | Verdict | Agents |
|---|---|---|
| Acid resistance | limited | Sulfuric acid, 30% (resistant), Sulfuric acid, conc. (not resistant), Hydrochloric acid, conc. (limited) and Nitric acid, 10% (resistant) |
| Alkali resistance | limited | Sodium hydroxide, 1% (resistant), Sodium hydroxide, 10% (not resistant), Ammonium hydroxide, 10% (limited) and Ammonium hydroxide, conc. (not resistant) |
| Oil and grease resistance | limited | Mineral oil (resistant), Motor oil (resistant), Gasoline, regular (resistant) and Gasoline, premium unleaded (limited) |
| Water solubility | resistant | Deionized water (resistant) |
Density and price
PETG-GF's density is typically 1,330 kg/m³, the middle half 1,260–1,360 kg/m³, across 5 products. One product has a sampled price: QIDI PETG GF at 37 CAD/kg.
| As each sheet publishes it | iSANMATE PETG Glass | Eryone PETG-GF | Nanovia PETG GF UV | QIDI PETG GF | Nobufil PETG GF |
|---|---|---|---|---|---|
| Price | not published | not published | not published | 37 CAD/kg | not published |
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
6 more properties are published, each under its own sheet's test conditions, so they are listed, not ranked.
The 6 properties, lowest to highest
| Property | Products | Lowest–highest |
|---|---|---|
| Fibre content | 4 | 5–20 % |
| Melt mass-flow rate | 3 | 2–10 g/10 min |
| Impact strength, test unclear | 1 | 3.9 kJ/m² |
| Melting temperature | 1 | 190–220 °C |
| Tensile strain at strength | 1 | 2.3–2.6 % |
| Water absorption | 1 | 0.8 % |
Sources
11 documents from 6 publishers (6 data sheets, 3 makers' product pages and guides, 1 printer document and 1 safety data sheet), read 10 Sep–4 Oct 2026. Each value on PETG-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 5 products.
Every document (11), by publisher
| Publisher | Documents | Values | Products |
|---|---|---|---|
| Eryone | 3 | 19 | 1 |
| QIDI | 2 | 18 | 1 |
| iSANMATE | 2 | 9 | 1 |
| Nanovia | 2 | 7 | 1 |
| Nobufil | 1 | 13 | 1 |
- Bambu Lab, H2C Filamant Printing Guide | Bambu Lab Wiki
- Eryone, PETG Fiberglass 3D Printer Filament, 1.75mm(1kg) | Eryone - eryone3d
- Eryone, Technical Data Sheet (TDS) PETG-GF
- Eryone, Technical Data Sheet (TDS) PETG-GF
- iSANMATE, iSANMATE Durable PETG Glass Fiber Filament for industrial parts
- iSANMATE, PETG Glass Fiber
- Nanovia, Nanovia PETG GF UV : Glass fiber reinforced : Nanovia
- Nanovia, PETG GF UV official material safety data sheet
- Nobufil, Technical Datasheet PETG GF
- QIDI, QIDI Filament Guide | Choose the Right Filament
- QIDI, Technical Data Sheet QIDI PETG-GF