PEEK-CF
Carbon-fibre-filled PEEK, 5 products from 4 makers.
Beyond H2C capability. Kept for reference, never a candidate: it needs more heat than the H2C gives.
- Tensile modulus (XY)
- 10.1GPa
- 3 products · 8.1–17.3
- Tensile strength (XY)
- 119MPa
- 4 products · middle half 110–137
- Not published:
- tensile strength (Z),
- Notched Charpy impact
- 12kJ/m²
- as published · test bar not described as printed
- HDT at 0.45 MPa
- 265°C
- one product
- Not published:
- price.
PEEK-CF is carbon-fibre-filled PEEK. Makers sell it for demanding uses in aerospace, automotive, oil and gas, and for dynamically stressed parts. Its HDT at 0.45 MPa is 265 °C, above its glass transition. On the H2C it is kept for reference only, because every nozzle window its makers publish asks for more heat than the H2C gives, most accepting 450–460 °C.
Partly documented HDT at 0.45 MPa rests on 1 product, tensile modulus (XY) on 3 products, tensile strength (XY) on 4 products, tensile strength (Z) and price are not published and notched Charpy impact is published only on test bars no document describes as printed. 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
- 450–460 °C
- most products that give one
- Bed
- 160–250 °C
- 1 of 2 that give one
- Heated chamber
- 160–230 °C
- 1 of 2 that give one; beyond the H2C's 65 °C
- Drying
- 120 °C for 8 h
- 1 of 5 products calls for it
- Nozzle type
- hardened
- one of 5 products' sheets asks for one; the rest are silent
Beyond the H2C's limits (nozzle 350 °C, bed 120 °C, heated chamber 65 °C): nozzle for 3 products, bed for 2 products and chamber for 2 products.
Among the materials
Against PPA-CF, PEEK-CF is 32 % stiffer and 10 % stronger flat. Against PPS-CF, PEEK-CF is 37 % stronger flat and 26 % stiffer. Among the materials, PEEK-CF has a high tensile modulus (XY), tensile strength (XY), HDT at 0.45 MPa and density, and a low elongation at break (XY): each is in the top or bottom quarter of the materials that publish it.
Against its alternatives, PEEK-CF has the highest tensile modulus, tensile strength and HDT at 0.45 MPa
How does it compare with what an engineer would buy instead?
- PEEK-CF: 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
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) |
|---|---|---|---|---|---|---|
| PEEK-CF (this material) | 10.1 · 3 | 119 (110–137) · 4 | — | 12 as published (1) | 265 · 1 | — |
| PPA-CF | 7.65 (7.1–9.1) · 4 | 108 (103–123) · 4 | 57 · 1 | 6.5 · 1 | 220 (220–227) · 5 | 255 · 1 |
| PPS-CF | 8 (7.46–8) · 5 | 87 (63–95) · 5 | 28.2 · 3 | 5.75 · 2 | 251 (245–253) · 5 | 210 · 2 |
| PPS-GF | 4.55 · 3 | 64.1 · 3 | 22.9 · 3 | 7.3 · 2 | 236 · 2 | 137 · 2 |
| PPA-GF | 6.56 · 3 | 100 · 3 | 57.5 · 2 | — | 196 · 3 | 106 · 1 |
| PA6-CF | 4.37 (4.09–4.61) · 6 | 70 (62.3–104) · 8 | 48 · 3 | 13.4 · 3 | 193 (185–202) · 6 | 130 (113–160) · 4 |
PEEK-CF publishes no tensile strength (Z) or price. Its notched Charpy impact states no orientation, so it is drawn as published.
Where PEEK-CF sits among the 128 rigid materials on file
Where is it in the landscape: stiffness against strength, heat resistance against price?
- PEEK-CF: median, middle half as a cross
- a PEEK-CF product
- an alternative
- another material
- beyond the scale
Tensile strength (XY) against tensile modulus (XY)
MPa, log scale
Tensile modulus (XY), GPa, 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) |
|---|---|---|
| PEEK-CF (this material) | 10.1 GPa · 3 | 119 MPa · 4 |
| PPA-CF | 7.65 GPa · 4 | 108 MPa · 4 |
| PPS-CF | 8 GPa · 5 | 87 MPa · 5 |
| PPS-GF | 4.55 GPa · 3 | 64.1 MPa · 3 |
| PPA-GF | 6.56 GPa · 3 | 100 MPa · 3 |
| PA6-CF | 4.37 GPa · 6 | 70 MPa · 8 |
Mechanical properties
Printed flat (XY), PEEK-CF typically reaches a tensile strength of 119 MPa at a modulus of 10.1 GPa, and breaks at 2.7 % elongation. In bending, its flexural strength is typically 141 MPa at a flexural modulus of 9.75 GPa.
PEEK-CF's products spread most in tensile strength: the middle half runs 110–137 MPa
How strong, stiff and tough are its products, and which stand out?
- a product
- middle half and median
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
| Property | In the median | Median | Middle half | Lowest in the median | Highest in the median | As published | Added filler or additive |
|---|---|---|---|---|---|---|---|
| Tensile strength (XY) (MPa) | 4 | 119 | 110–137 | 3DXTECH CarbonX Carbon Fiber PEEK, 105 | Filament2Print TECAFIL PEEK EV CF30 black - 1.75 mm, 169 | 0 | 0 |
Every PEEK-CF product that publishes these values is drawn; each value, with its document and conditions, is on the Products page.
| As each sheet publishes it | 3DXTECH CarbonX Carbon | 3DXTECH 20% | Filament2Print TECAFIL PEEK | LEHVOSS LUVOCOM 3F | iSANMATE CF PEEK |
|---|---|---|---|---|---|
| Tensile modulus (XY) | 8.1 GPa | 10.1 GPa | 17.3 GPa | not published | 6 GPanot described as printed |
| Elongation at break (XY) | 3 % | 1.9 % | 2.7 % | not published | 10 %not described as printed |
| Notched Charpy impact | not published | not published | not published | 12 kJ/m²not described as printed | not published |
Not published for PEEK-CF: strength across the layers.
Thermal properties
Its products put HDT at 265 °C under 0.45 MPa, against a glass transition of 143–147 °C. As published, melting is typically 342 °C.
| As each sheet publishes it | 3DXTECH CarbonX Carbon | 3DXTECH 20% | Filament2Print TECAFIL PEEK | LEHVOSS LUVOCOM 3F | iSANMATE CF PEEK |
|---|---|---|---|---|---|
| HDT at 0.45 MPa | 265 °C | 305 °Cload not stated | not published | not published | not published |
| Glass transition (Tg) | 143 °C | 143 °C | not published | not published | 147 °C |
Not published for PEEK-CF: HDT at 1.8 MPa.
Printing on the H2C
PEEK-CF's nozzle and heated chamber run past what 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
- PEEK-CF: 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 | 450–460 °C | 3 | 350 °C |
| Bed | 130–150 °C; 160–250 °C | 2 | 120 °C |
| Heated chamber | 90–150 °C; 160–230 °C | 2 | 65 °C |
| Drying | 120 °C, 8 h | 1 | — |
| Glass transition (Tg) | 143 °C | 3 | — |
| HDT at 0.45 MPa | 265 °C | 1 | — |
| Melting temperature | 341–343 °C | 2 | — |
Windows read from the Bambu Lab Filament Guide are not shaded: the guide speaks for every product that reads it.
| Setting | 3DXTECH CarbonX Carbon | 3DXTECH 20% | Filament2Print TECAFIL PEEK | LEHVOSS LUVOCOM 3F | iSANMATE CF PEEK |
|---|---|---|---|---|---|
| Nozzle | not published | not published | 420–460 °C | 450–520 °C | 380–420 °C |
| Bed | not published | not published | 160–250 °C | at least 50 °C | 130–150 °C |
| Heated chamber | not published | not published | 160–230 °C | not published | 90–150 °C |
| Drying | not published | not published | 120 °C for 8 h | not published | not published |
| Nozzle type | not stated | not stated | not stated | hardened | not stated |
What makers say about printing it
Moisture sensitivity
To achieve optimum mechanical properties, it is recommended to pre-dry the material with the above mentioned parameters.
Filament2Print TECAFIL PEEK EV CF30 black - 1.75 mm, data sheet, p. 1
Nozzle wear
nozzle material: abbrasion resistant
LEHVOSS LUVOCOM 3F PEEK CF 9676 BK, data sheet, p. 2
More from makers: warping and shrinkage and adhesion between layers
Warping and shrinkage
high dimensional stability
Filament2Print TECAFIL PEEK EV CF30 black - 1.75 mm, data sheet, p. 1
Adhesion between layers
At the same time, it is lighter than PEEK, having better interlayer adhesion and better temperature resistance.
iSANMATE CF PEEK, data sheet, p. 1having excellent interlayer adhesion, and able to improve the strength and shock resistance of the prototype.
iSANMATE CF PEEK, data sheet, p. 1
Products
5 products from 4 makers; the most from 3DXTECH (2).
Uses, limitations and chemicals
What it is sold for
oil and gas industry automotive industry chemical technology mechanical engineering aircraft and aerospace technology
Filament2Print TECAFIL PEEK EV CF30 black - 1.75 mm, data sheet, p. 1At present, it often used in demanding applications such as aerospace, automotive, electronic conductor.
iSANMATE CF PEEK, data sheet, p. 1Dynamically-stressed parts.
LEHVOSS LUVOCOM 3F PEEK CF 9676 BK, data sheet, p. 1
Chemicals and environment
No maker of these products publishes resistance to a named chemical, to water or to sunlight.
Density and price
Its three products give a density of 1,340–1,390 kg/m³. No PEEK-CF product has a price in the sample.
| As each sheet publishes it | 3DXTECH CarbonX Carbon | 3DXTECH 20% | Filament2Print TECAFIL PEEK | LEHVOSS LUVOCOM 3F | iSANMATE CF PEEK |
|---|---|---|---|---|---|
| Density | 1,390 kg/m³ | 1,390 kg/m³ | not published | 1,340 kg/m³ | not published |
Other properties, as published
8 more properties are published, each under its own sheet's test conditions, so they are listed, not ranked.
The 8 properties, lowest to highest
| Property | Products | Lowest–highest |
|---|---|---|
| Fibre content | 5 | 10–30 % |
| Melt mass-flow rate | 2 | 2.9–16 g/10 min |
| Water absorption | 2 | 0.1–0.5 % |
| Continuous service temperature | 1 | 250 °C |
| Elongation at yield | 1 | 2.6–3.7 % |
| Melt volume-flow rate | 1 | 14 cm³/10 min |
| Surface resistivity | 1 | 1 × 10⁹ Ω |
| Tensile strain at strength | 1 | 3.4 % |
Sources
8 documents from 5 publishers (5 data sheets, 1 safety data sheet, 1 maker's product page or guide and 1 printer document), read 10 Sep–19 Oct 2026. Each value on PEEK-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 5 products.
Every document (8), by publisher
| Publisher | Documents | Values | Products |
|---|---|---|---|
| 3DXTECH | 3 | 18 | 2 |
| LEHVOSS | 2 | 14 | 1 |
| Filament2Print | 1 | 18 | 1 |
| iSANMATE | 1 | 6 | 1 |
- 3DXTECH, CarbonX Carbon Fiber PEEK safety data sheet
- 3DXTECH, Technical Data Sheet: CarbonX™ 20% Carbon Fiber PEEK 3D Printing Filament
- 3DXTECH, Technical Data Sheet: CarbonX™ Carbon Fiber PEEK 3D Printing Filament
- Bambu Lab, H2C Filamant Printing Guide | Bambu Lab Wiki
- Filament2Print, TECAFIL PEEK EV CF30 black - 1.75 mm - Filament
- iSANMATE, CF-PEEK Technical Data Sheet(TDS)
- LEHVOSS, LUVOCOM-3F | LEHVOSS Compounds
- LEHVOSS, PRELIMINARY DATASHEET LUVOCOM 3F PEEK CF 9676 BK