PPA-CF
Carbon-Fiber-Reinforced Polyphthalamide
8 products from 6 makers. Bambu Lab sells its own filament of this material for the H2C.
- Tensile modulus (XY)
- 7.65GPa
- 4 products · middle half 7.1–9.1
- Tensile strength (XY)
- 108MPa
- 4 products · middle half 103–123
- Tensile strength (Z)
- 57MPa
- one product
- Notched Charpy impact
- 6.5kJ/m²
- one product
- HDT at 0.45 MPa
- 220°C
- 5 products · middle half 220–227
- Price
- 255CAD/kg
- one product
PPA-CF is carbon-fibre-filled polyphthalamide. Makers sell it for automotive, aerospace, electronics, drone and robot parts. It is semicrystalline, so it carries light load well above its glass transition: its HDT at 0.45 MPa is 220 °C. On the H2C it prints at 285–310 °C, every product needs a hardened nozzle, and some chamber windows reach above the H2C's heated-chamber limit.
Partly documented Tensile strength (Z), notched Charpy impact and price rest on 1 product each and tensile modulus (XY) and tensile strength (XY) on 4 products each. 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
- 285–310 °C
- most products that give one
- Bed
- 80 °C
- most products that give one
- Heated chamber
- 25–80 °C
- most products that give one; beyond the H2C's 65 °C
- Drying
- 80–140 °C, 4–12 h
- 5 of 8 products call for it; 3 more give it as optional
- Nozzle type
- hardened
- 6 of 8 products' sheets ask for one; the Bambu Lab Filament Guide says hardened for 2 more
No product's setting is beyond the H2C's limits: nozzle 350 °C, bed 120 °C, heated chamber 65 °C.
Among the materials
Against PPA-GF, PPA-CF is 17 % stiffer and 8 % stronger flat, and its HDT at 0.45 MPa is 24 °C higher. Against PA6-CF, PPA-CF is 75 % stiffer and 54 % stronger flat, and its HDT at 0.45 MPa is 27 °C higher. Among the materials, PPA-CF has a high tensile modulus (XY), tensile strength (XY), tensile strength (Z), HDT at 0.45 MPa and price, and a low elongation at break (XY): each is in the top or bottom quarter of the materials that publish it. Its notched Charpy impact and density sit in the middle half.
Against its alternatives, PPA-CF has the highest tensile strength and price
How does it compare with what an engineer would buy instead?
- PPA-CF: its products' median and middle half
- an alternative
- lowest to highest
- each material's median (top row)
- 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) |
|---|---|---|---|---|---|---|
| PPA-CF (this material) | 7.65 (7.1–9.1) · 4 | 108 (103–123) · 4 | 57 · 1 | 6.5 · 1 | 220 (220–227) · 5 | 255 · 1 |
| 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 |
| PA6-GF | 4.35 (3.91–4.66) · 4 | 82.3 (76.3–87.9) · 6 | 60.7 · 3 | 8.6 · 2 | 186 (181–191) · 7 | 84 · 3 |
| PPS-GF | 4.55 · 3 | 64.1 · 3 | 22.9 · 3 | 7.3 · 2 | 236 · 2 | 137 · 2 |
| PPS-CF | 8 (7.46–8) · 5 | 87 (63–95) · 5 | 28.2 · 3 | 5.75 · 2 | 251 (245–253) · 5 | 210 · 2 |
Each cell is the median of the products ranked, its middle half in brackets, and how many.
Where PPA-CF sits among the 128 rigid materials on file
Where is it in the landscape: stiffness against strength, heat resistance against price?
- PPA-CF: median, middle half as a cross
- a PPA-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
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 |
|---|---|---|---|---|
| PPA-CF (this material) | 7.65 GPa · 4 | 108 MPa · 4 | 255 CAD/kg · 1 | 220 °C · 5 |
| PPA-GF | 6.56 GPa · 3 | 100 MPa · 3 | 106 CAD/kg · 1 | 196 °C · 3 |
| PA6-CF | 4.37 GPa · 6 | 70 MPa · 8 | 130 CAD/kg · 4 | 193 °C · 6 |
| PA6-GF | 4.35 GPa · 4 | 82.3 MPa · 6 | 84 CAD/kg · 3 | 186 °C · 7 |
| PPS-GF | 4.55 GPa · 3 | 64.1 MPa · 3 | 137 CAD/kg · 2 | 236 °C · 2 |
| PPS-CF | 8 GPa · 5 | 87 MPa · 5 | 210 CAD/kg · 2 | 251 °C · 5 |
Mechanical properties
Printed flat (XY), PPA-CF typically reaches a tensile strength of 108 MPa at a modulus of 7.65 GPa, and breaks at 3.35 % elongation. In bending, its flexural strength is typically 209 MPa at a flexural modulus of 7.2 GPa.
PPA-CF's products spread most in tensile modulus: the middle half runs 7.1–9.1 GPa
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
- middle half and median
- beyond the scale
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 | 108 | 103–123 | 3DXTECH CarbonX Carbon Fiber High Temp Nylon (HTN), 87 | Bambu Lab PPA-CF, 168 | 2 | 0 |
| Tensile modulus (XY) (GPa) | 4 | 7.65 | 7.1–9.1 | Flashforge PPA-CF, 7.1 | Bambu Lab PPA-CF, 11.8 | 2 | 0 |
| Elongation at break (XY) (%) | 4 | 3.35 | 2.88–3.5 | 3DXTECH CarbonX Carbon Fiber High Temp Nylon (HTN), 1.9 | SIDDAMENT PPA-CF, 3.5 | 2 | 0 |
Every PPA-CF product that publishes these values is drawn; each value, with its document and conditions, is on the Products page.
| Product | Tensile strength (Z) | Notched Charpy impact | Notched Izod impact |
|---|---|---|---|
| Bambu Lab PPA-CF | 57 MPa | 6.5 kJ/m² | not published |
| Flashforge PPA-CF | not published | not published | 9 kJ/m² |
| SIDDAMENT PPA-CF | not published | not published | 9 kJ/m² |
In grey, a value a product reads from a data sheet it shares, where its own sheet is silent.
Across the layers (Z), PPA-CF keeps 34 % of its flat strength and 36 % 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 %
- PPA-CF's median share
- an alternative
Tensile strength
Z keeps 34 % of XY, median of 1 product
flat (XY), MPa
Share kept: PA6-GF 73 % · PPA-GF 60 % · PA6-CF 49 % · PPS-CF 45 % · PPS-GF 36 % · PPA-CF 34 %
Tensile modulus
Z keeps 36 % of XY, median of 1 product
flat (XY), GPa
Share kept: PA6-GF 68 % · PPA-GF 63 % · PPS-GF 56 % · PA6-CF 46 % · PPS-CF 36 % · PPA-CF 36 %
Elongation at break
Z keeps 28 % of XY, median of 1 product
flat (XY), %
Share kept: PA6-GF 85 % · PPS-CF 77 % · PA6-CF 77 % · PPA-GF 58 % · PPS-GF 55 % · 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
| Product | Property | Flat (XY) | Across (Z) | Z as a share of XY |
|---|---|---|---|---|
| Bambu Lab PPA-CF | Tensile strength | 168 MPa | 57 MPa | 34 % |
| Bambu Lab PPA-CF | Tensile modulus | 11.8 GPa | 4.3 GPa | 36 % |
| Bambu Lab PPA-CF | Elongation at break | 3.2 % | 0.9 % | 28 % |
| PPA-GF (alternative) | Tensile strength | 60 % · 2 | ||
| PA6-CF (alternative) | Tensile strength | 49 % · 3 | ||
| PA6-GF (alternative) | Tensile strength | 73 % · 3 | ||
| PPS-GF (alternative) | Tensile strength | 36 % · 3 | ||
| PPS-CF (alternative) | Tensile strength | 45 % · 3 | ||
| PPA-GF (alternative) | Tensile modulus | 63 % · 2 | ||
| PA6-CF (alternative) | Tensile modulus | 46 % · 2 | ||
| PA6-GF (alternative) | Tensile modulus | 68 % · 3 | ||
| PPS-GF (alternative) | Tensile modulus | 56 % · 3 | ||
| PPS-CF (alternative) | Tensile modulus | 36 % · 3 | ||
| PPA-GF (alternative) | Elongation at break | 58 % · 2 | ||
| PA6-CF (alternative) | Elongation at break | 77 % · 2 | ||
| PA6-GF (alternative) | Elongation at break | 85 % · 3 | ||
| PPS-GF (alternative) | Elongation at break | 55 % · 3 | ||
| PPS-CF (alternative) | Elongation at break | 77 % · 3 |
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 | 108103–123 | 4 | 57 | 1 | 34 %1 product |
| Tensile modulus GPa | 7.657.1–9.1 | 4 | 4.3 | 1 | 36 %1 product |
| Elongation at break % | 3.352.88–3.5 | 4 | 0.9 | 1 | 28 %1 product |
| Flexural strength MPa | 209180–210 | 4 | 70 | 3 | 33 %3 products |
| Flexural modulus GPa | 7.26.5–8.39 | 4 | 2.52 | 3 | 39 %3 products |
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
PPA-CF's HDT is typically 220 °C under 0.45 MPa and 124–196 °C under 1.8 MPa, with its glass transition typically at 83 °C. Semicrystalline, it carries light load well above its glass transition. As published, Vicat softening is typically 232 °C and melting typically 239 °C.
Most PPA-CF products deflect at 220–227 °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
- beyond the scale
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 |
|---|---|---|---|---|---|---|---|
| HDT at 0.45 MPa (°C) | 5 | 220 | 220–227 | Raise3D Hyper Core PPA CF25, 197 | 3DXTECH CarbonX Carbon Fiber High Temp Nylon (HTN), 240 | 3 | 0 |
| Glass transition (Tg) (°C) | 4 | 83 | 80–95 | Siraya Tech Fibreheart PPA-CF, 80 | 3DXTECH CarbonX Carbon Fiber High Temp Nylon (HTN), 125 | 0 | 0 |
Every PPA-CF product that publishes these values is drawn; each value, with its document and conditions, is on the Products page.
| Product | HDT at 1.8 MPa |
|---|---|
| Bambu Lab PPA-CF | 196 °C |
| Siraya Tech Fibreheart PPA-CF | 83 °Cnot described as printed |
| Siraya Tech Core | 84 °Cnot described as printed |
| Raise3D Industrial CF | 113 °Cnot described as printed |
| Raise3D Hyper Core | 124 °Cafter annealing |
Printing on the H2C
PPA-CF prints within the H2C's limits and softens near 220 °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
- PPA-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 | 285–310 °C | 6 | 350 °C |
| Bed | 80 °C | 6 | 120 °C |
| Heated chamber | 25–80 °C | 3 | 65 °C |
| Drying | 80–140 °C, 4–12 h | 8 | — |
| Glass transition (Tg) | 83 °C (80–95 °C) | 4 | — |
| HDT at 1.8 MPa | 160 °C | 2 | — |
| HDT at 0.45 MPa | 220 °C (220–227 °C) | 5 | — |
| Vicat softening temperature | 230–238 °C | 3 | — |
| Melting temperature | 231–265 °C | 5 | — |
Windows read from the Bambu Lab Filament Guide are not shaded: the guide speaks for every product that reads it.
| Setting | Most PPA-CF products | Bambu Lab Filament Guide (PPA-CF column) |
|---|---|---|
| Nozzle | 285–310 °C most products that give one | 280 - 310 ℃ |
| Bed | 80 °C most products that give one | Smooth PEI Plate (100 - 120 °C) Textured PEI Plate (100 - 120 °C) |
| Heated chamber | 25–80 °C most products that give one; beyond the H2C's 65 °C | enclosure required |
| Drying | 80–140 °C, 4–12 h 5 of 8 products call for it; 3 more give it as optional | 100–140 °C for 8–12 h |
| Nozzle type | hardened 6 of 8 products' sheets ask for one; the Bambu Lab Filament Guide says hardened for 2 more | hardened |
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
Four products publish values measured after annealing, at 100 °C for 8 h.
After annealing, max. 0.5% dimensional shrinkage could be observed in Z-axis depending on infill and layer height, no obvious dimensional shrinkage in XY-axis.
Raise3D Industrial PPA CF, data sheet, p. 2If this filament is used as the support material for itself, please remove the support structure after annealing.
Raise3D Hyper Core PPA CF25, data sheet, p. 2After the printing, it is recommended to anneal the printed part at 80-100°C for 8 hours.
Raise3D Industrial PPA CF, data sheet, p. 2
What makers say about printing it
Nozzle wear
Nozzle Use a hardened steel nozzle or higher grade
Siraya Tech Fibreheart PPA-CF, data sheet, p. 3
Printing advice
Heating Block At least 12mm thick for optimal temperature stability
Siraya Tech Fibreheart PPA-CF, data sheet, p. 3
More from makers: supports and removal, moisture sensitivity, warping and shrinkage, odour and emissions and adhesion between layers
Supports and removal
If PPA CF is used as the support material for itself, please remove the support structure after annealing.
Raise3D Industrial PPA CF, data sheet, p. 2
Moisture sensitivity
Only dry if filament shows signs of moisture.
Siraya Tech Fibreheart PPA-CF, data sheet, p. 3
Warping and shrinkage
Advanced Reinforcement: 15% carbon fibers for superior mechanical properties and reduced warping.
Siraya Tech Fibreheart PPA-CF, data sheet, p. 1
Odour and emissions
Odor / Almost odorless
Raise3D Industrial PPA CF, data sheet, p. 1
Adhesion between layers
Enhanced Layer Bonding: Pure resin shell-to-shell contact provides superior Z-axis strength
Siraya Tech Fibreheart PPA-CF Core, data sheet, p. 1
Products
8 products from 6 makers; the most from Raise3D (2) and Siraya Tech (2).
- Most documented: Bambu Lab PPA-CF, with values for more properties than any other.
- Highest tensile strength (XY): Bambu Lab PPA-CF, 168 MPa.
- Highest HDT at 0.45 MPa: 3DXTECH CarbonX Carbon Fiber High Temp Nylon (HTN), 240 °C.
These are published values, not recommendations: the selector judges each product against your requirements.
Uses, limitations and chemicals
What it is sold for
PPA-CF offers strength approaching metal levels, being 48% stronger and 102% stiffer than normal PA6-CF. This filament excels in mechanical properties, making it ideal for high-performance engineering applications. Perfect for repairs, it can effectively replace automotive and industrial parts with exceptional durability and reliability.
Bambu Lab PPA-CF, maker's product page or guide, p. 1Automotive, drones, robots, and other mechanical components.
Siraya Tech Fibreheart PPA-CF, data sheet, p. 1It is promising for end-use applications in automotive, aerospace, electrical and electronics (E&E) industry.
Raise3D Industrial PPA CF, data sheet, p. 1
Finish and accuracy
Stable accuracy: Chopped carbon fibers are evenly distributed to form a strong network solidified structure, ensuring high accuracy for complex engineering projects.
Siraya Tech Fibreheart PPA-CF, data sheet, p. 1Bambu PPA-CF - a premium fiber-reinforced nylon, delivers industrial-grade printing quality with precise 1:1 reproduction.
Bambu Lab PPA-CF, data sheet, p. 1
Chemicals and environment
| Exposure | What makers say |
|---|---|
| Water solubility | Insoluble, in its one statement |
| Acid resistance | Described in words, with no rating, in its one statement |
| Alkali resistance | Described in words, with no rating, in its one statement |
| Organic solvent resistance | Described in words, with no rating, in its one statement |
| Oil and grease resistance | Described in words, with no rating, in its one statement |
| Flammability | Flammable, in its one statement |
On food contact, disposal and safety, as makers state them:
Handle in accordance with good industrial hygiene and safety practice. Do not eat, drink or smoke at the workplace. Avoid dust formation by cutting or grinding. During printing, ensure good ventilation and local exhaust.
Safety Siraya Tech Fibreheart PPA-CF, safety data sheet, p. 3Ensure good ventilation / exhaustion at the workplace. Wash thoroughly after handling.
Safety Raise3D Industrial PPA CF, safety data sheet, p. 4
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
PPA-CF's density is typically 1,220 kg/m³, the middle half 1,210–1,230 kg/m³, across 8 products. One product has a sampled price: Bambu Lab PPA-CF at 255 CAD/kg.
| Product | Price |
|---|---|
| Bambu Lab PPA-CF | 255 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
7 more properties are published, each under its own sheet's test conditions, so they are listed, not ranked.
The 7 properties, lowest to highest
| Property | Products | Lowest–highest |
|---|---|---|
| Fibre content | 6 | 10–30 % |
| Water absorption | 5 | 0.1–1.37 % |
| Melt mass-flow rate | 4 | 4.2–40 g/10 min |
| Continuous service temperature | 1 | 120 °C |
| Crystallization temperature | 1 | 178 °C |
| Moisture content | 1 | 0.6 % |
| Surface resistivity | 1 | 1,000 Ω |
Sources
18 documents from 6 publishers (10 data sheets, 4 safety data sheets, 3 makers' product pages and guides and 1 printer document), read 10 Sep–19 Oct 2026. Each value on PPA-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 8 products.
The Bambu Lab Filament Guide (print settings per material type): read for 8 products whose own sheets are silent.
Every document (18), by publisher
| Publisher | Documents | Values | Products |
|---|---|---|---|
| Siraya Tech | 5 | 79 | 2 |
| Raise3D | 3 | 36 | 2 |
| Bambu Lab | 3 | 23 | 1 |
| 3DXTECH | 3 | 21 | 1 |
| Flashforge | 1 | 17 | 1 |
| SIDDAMENT | 1 | 0 | 1 |
- 3DXTECH, CARBONX™ HTN+CF
- 3DXTECH, Tech Data Sheet CarbonX™ Carbon Fiber High Temp Nylon (HTN) 3D Filament
- 3DXTECH, Tech Data Sheet CarbonX™ Carbon Fiber High Temp Nylon (HTN) 3D Filament
- Bambu Lab, Bambu Filament Technical Data Sheet - PPA-CF
- Bambu Lab, Bambu Lab Filament Guide
- Bambu Lab, Bambu Lab PPA-CF safety data sheet
- Bambu Lab, H2C Filamant Printing Guide | Bambu Lab Wiki
- Bambu Lab, PPA-CF official maker product page
- Flashforge, Technical Data Sheet PPA-CF Filament
- Raise3D, Raise3D Hyper Core PPA CF25 Technical Data Sheet
- Raise3D, Raise3D Industrial PPA CF Safety Data Sheet
- Raise3D, Raise3D Industrial PPA CF Technical Data Sheet
- SIDDAMENT, Technical Data Sheet PPA-CF Filament
- Siraya Tech, High-Performance PPA Based PAHT-CF | 3D FDM Filament for Extreme Environments
- Siraya Tech, Material Safety Data Sheet: Siraya Tech PAHT-CF
- Siraya Tech, Material Safety Data Sheet: Siraya Tech PPA-CF Core
- Siraya Tech, Technical Data Sheet: Siraya Tech Fibreheart PPA-CF
- Siraya Tech, Technical Data Sheet: Siraya Tech Fibreheart PPA-CF Core