CPE-CF
Carbon-Fiber-Reinforced Copolyester
3 products from 3 makers. Bambu Lab does not list this material for the H2C; its published process temperatures are within the printer's limits.
- Tensile modulus (XY)
- 5.15GPa
- one product
- Tensile strength (XY)
- 56MPa
- one product
- Not published:
- tensile strength (Z).
- Notched Charpy impact
- 2.5kJ/m²
- one product
- HDT at 0.45 MPa
- 78°C
- one product
- Price
- 81CAD/kg
- one product
CPE-CF is a carbon-fibre-filled CPE copolyester. A maker sells it for parts that need high stiffness and another for applications with long-term load. On the H2C it prints at 250–270 °C without chamber heat, but makers call for a hardened steel or ruby nozzle because the fibres are abrasive.
Thinly documented Three products, with values from three makers' documents: Spectrum's, Fillamentum's and colorFabb's. Read each figure as a few sheets' word.
On the H2C
Printing in full- Nozzle
- 250–270 °C
- most products that give one
- Bed
- 70 °C
- both that give one
- Heated chamber
- none needed
- 2 of 3 products
- Drying
- 65–80 °C, 3–6 h
- all 3 products call for it
- Nozzle type
- hardened
- 2 of 3 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
Among the materials, CPE-CF has a high tensile modulus (XY) and a low elongation at break (XY) and notched Charpy impact: 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, CPE-CF has the highest tensile modulus and tensile strength and the lowest notched Charpy impact
How does it compare with what an engineer would buy instead?
- CPE-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
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) |
|---|---|---|---|---|---|---|
| CPE-CF (this material) | 5.15 · 1 | 56 · 1 | — | 2.5 · 1 | 78 · 1 | 81 · 1 |
| CPE | 1.68 · 2 | 52.5 · 2 | — | 5.7 · 2 | 75 · 2 | 64 · 2 |
| 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-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 |
| PCTG-CF | — | 39–70 as published (3) | — | — | 78 · 1 | 138 · 1 |
CPE-CF publishes no tensile strength (Z).
Mechanical properties
Printed flat (XY), CPE-CF typically reaches a tensile strength of 56 MPa at a modulus of 5.15 GPa, and breaks at 2 % elongation. In bending, its flexural strength is typically 70 MPa at a flexural modulus of 2.7 GPa.
| As each sheet publishes it | Fillamentum CPE CF112 | Spectrum pctg cf10 | colorFabb XT-CF20 |
|---|---|---|---|
| Tensile strength (XY) | 52.4 MPanot described as printed | 70 MPanot described as printed | 56 MPa |
| Tensile modulus (XY) | 2.2 GPanot described as printed | not published | 5.15 GPa |
| Elongation at break (XY) | 8 %not described as printed | 5 %not described as printed | 2 % |
| Notched Charpy impact | not published | not published | 2.5 kJ/m² |
| Shore D hardness | 77 Shore D | not published | not published |
Not published for CPE-CF: strength across the layers.
Thermal properties
Its products put HDT at 78 °C under 0.45 MPa and 68 °C under 1.8 MPa. As published, Vicat softening is 77–89 °C, from one product.
| As each sheet publishes it | Fillamentum CPE CF112 | Spectrum pctg cf10 | colorFabb XT-CF20 |
|---|---|---|---|
| HDT at 0.45 MPa | not published | 78 °Cglassy: counts | not published |
| HDT at 1.8 MPa | not published | 68 °Cglassy: counts | not published |
Not published for CPE-CF: the glass transition.
Printing on the H2C
CPE-CF prints within the H2C's limits and softens near 78 °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
- one end given ("at least")
- the H2C's limit, and beyond it
- a product
- CPE-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 | 250–270 °C | 3 | 350 °C |
| Bed | 60–70 °C; 70–85 °C | 2 | 120 °C |
| Heated chamber | — | 0 | 65 °C |
| Drying | 65–80 °C, 3–6 h | 3 | — |
| HDT at 1.8 MPa | 68 °C | 1 | — |
| HDT at 0.45 MPa | 78 °C | 1 | — |
| Vicat softening temperature | 77–89 °C | 1 | — |
No CPE-CF product gives a heated chamber window. Windows read from the Bambu Lab Filament Guide are not shaded: the guide speaks for every product that reads it.
| Setting | Fillamentum CPE CF112 | Spectrum pctg cf10 | colorFabb XT-CF20 |
|---|---|---|---|
| Nozzle | 250–270 °C | 250–270 °C | 240–260 °C |
| Bed | 70–85 °C | at least 50 °C | 60–70 °C |
| Heated chamber | none needed | none needed | not published |
| Drying | 75 °C for 3 h | 65 °C for 4 h | 80 °C for 6 h |
| Nozzle type | hardened | hardened | not stated |
What makers say about printing it
Printing advice
Use of adhesive is necessary to prevent damage of the pad!
Fillamentum CPE CF112 Carbon, data sheet, p. 1For best part strength, try to print with the least amount of fan cooling possible.
colorFabb XT-CF20, data sheet, p. 2Higher part cooling fan speed is recommended only for supports, bridges and overhangs.
Fillamentum CPE CF112 Carbon, data sheet, p. 1For better details and overhangs, increase fan speed.
colorFabb XT-CF20, data sheet, p. 2
Nozzle wear
It means that it will accelerate the nozzle-wear of brass nozzles faster than unfilled filaments.
Fillamentum CPE CF112 Carbon, data sheet, p. 1The hardened steel nozzles are recommended.
Fillamentum CPE CF112 Carbon, data sheet, p. 1Ruby or hardened nozzle recommended
Spectrum pctg cf10, data sheet, p. 1The CPE CF112 Carbon filament has abrasive properties.
Fillamentum CPE CF112 Carbon, data sheet, p. 1
Moisture sensitivity
Dry box not necessary
Spectrum pctg cf10, data sheet, p. 1
More from makers: warping and shrinkage and adhesion between layers
Warping and shrinkage
The use of carbon fibres increases the thermal resistance of the filament, further reduces shrinkage and gives the characteristic “carbon” matt appearance to the printed models.
Spectrum pctg cf10, data sheet, p. 1
Adhesion between layers
The contained fibres ensure functionality, great printability, dimensional stability and layer adhesion.
Fillamentum CPE CF112 Carbon, data sheet, p. 1
Products
Three products from three makers: colorFabb, Fillamentum and Spectrum.
Uses, limitations and chemicals
What it is sold for
This material is optimal for applications with long-term load.
Fillamentum CPE CF112 Carbon, data sheet, p. 1This is the perfect filament for parts which need high stiffness.
colorFabb XT-CF20, data sheet, p. 1
Finish and accuracy
The objects have nice smooth surface.
Fillamentum CPE CF112 Carbon, data sheet, p. 13D prints with colorFabb XT-Cf20 have a beautiful matte surface finish when printed.
colorFabb XT-CF20, data sheet, p. 1high dimensional accuracy of the printed elements
Spectrum pctg cf10, data sheet, p. 1
Chemicals and environment
| Exposure | What makers say |
|---|---|
| Food contact claims | 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.
Density and price
Its two products give a density of 1,160–1,280 kg/m³. One product has a sampled price: colorFabb XT-CF20 at 81 CAD/kg. 3D Printing Canada lists Spectrum pctg cf10, out of stock when sampled, with no regular price recorded. 3D Printing Canada lists Spectrum pctg cf10, out of stock when sampled, with no regular price recorded.
| As each sheet publishes it | Fillamentum CPE CF112 | Spectrum pctg cf10 | colorFabb XT-CF20 |
|---|---|---|---|
| Density | 1,160 kg/m³ | 1,280 kg/m³ | not published |
| Price | not published | not published | 81 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
2 more properties are published, each under its own sheet's test conditions, so they are listed, not ranked.
The 2 properties, lowest to highest
| Property | Products | Lowest–highest |
|---|---|---|
| Fibre content | 3 | 10–20 % |
| Impact strength, test unclear | 1 | 4–45 kJ/m² |
Sources
11 documents from 4 publishers (7 makers' product pages and guides, 3 data sheets and 1 printer document), read 10 Sep–19 Oct 2026. Each value on CPE-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 3 products.
Every document (11), by publisher
| Publisher | Documents | Values | Products |
|---|---|---|---|
| Spectrum | 4 | 12 | 1 |
| colorFabb | 3 | 9 | 1 |
| Fillamentum | 3 | 8 | 1 |
- Bambu Lab, H2C Filamant Printing Guide | Bambu Lab Wiki
- colorFabb, colorFabb Print Support– 3D Printing Guides, Tips & Support
- colorFabb, Technical datasheet XT-CF20
- colorFabb, XT-CF20 – Carbon Fiber Reinforced PETG Filament | colorFabb
- Fillamentum, 3D Printing Guide: Fillamentum CPE CF112 Carbon
- Fillamentum, CPE CF112 Carbon
- Fillamentum, Drying of filaments before processing on 3D printer
- Spectrum, 3D Printing Filament Manufacturer PRODUCT PORTFOLIO
- Spectrum, Filament drying - Spectrum Filaments
- Spectrum, pctg cf10
- Spectrum, Spectrum Filaments Product Portfolio 2025 — Prografen pp28–29