FDM · Stiff

FDM PETG-CF Carbon Fibre PETG 3D Printing

Name: FDM PETG-CF Carbon Fibre PETG 3D Printing
Brand: RYSE 3D

Carbon-filled PETG for stiff brackets, jigs and fixtures at ambient temperature — chopped fibre reinforcement that resists deflection under steady load, with a matte technical finish. 35 MPa tensile strength and 10.4% elongation, with a 74 °C heat deflection temperature that makes this firmly a room-temperature grade. RYSE 3D prints PETG-CF on our UK large-format platform up to 500 × 500 × 900 mm in one piece, priced instantly online.

Quote in PETG-CF → All FDM materials PETG-CF datasheet (PDF) ↓

Also known as carbon fibre PETG · PETG carbon fibre · CF PETG · PETG-CF 3D printing

Applications

What PETG-CF is used for

Indoor, ambient-temperature work where the part has to stay rigid and stay put.

RYSE 3D printed PETG-CF carbon fibre PETG electronics enclosure with moulded mounting tabs and cable cut-outs

Electronics enclosure — moulded mounting tabs and cable cut-outs

RYSE 3D printed PETG-CF carbon fibre PETG assembly fixture block with bored locating holes and a machined slot

Assembly fixture block — bored locating holes and a full-length slot

RYSE 3D printed PETG-CF carbon fibre PETG camera housing cage with a lens aperture and open-sided frame

Camera housing — open-sided cage with lens aperture

RYSE 3D printed PETG-CF carbon fibre PETG water pump housing pattern with cast-style inlet and outlet spigots

Water pump housing pattern — multi-port form model

Technical bracketsAssembly fixturesJigs & workholdingMachine guardingFrame & rail componentsCamera & sensor mountsPanel supportsRobotics mountsTest rig componentsForm & fit mock-ups

Overview

Rigidity at room temperature — and honesty about the rest

PETG-CF is carbon-filled PETG, and it is on this list for one reason: rigidity. Chopped carbon fibre stiffens the polymer so a bracket or fixture holds its shape under a steady load instead of creeping, and it gives the matte black finish people associate with technical parts.

Read the spec table below carefully, though, because the numbers do not tell that story. Stiffness is a modulus property, and the four figures we publish — tensile strength, elongation, heat deflection and impact — do not measure it. Against ABS and ASA, PETG-CF does not lead any of those four. What it offers is carbon reinforcement and dimensional steadiness that unfilled styrenics cannot match.

The hard constraint is heat. A 74 °C heat deflection temperature is the lowest in our FDM range, so this is an ambient-temperature material. Warm the part and it softens — at which point PET-CF, one letter away and nearly three times the heat resistance, is the grade you actually want.

Technical data

PETG-CF material properties

Headline properties for our FDM PETG-CF carbon fibre PETG.

Reviewed by the RYSE 3D engineering team · July 2026 Download the full datasheet below, or have it confirmed with your instant quote. Values vary with geometry and orientation.

Property	Value
Reinforcement	Chopped carbon fibre
Ultimate tensile strength	35 MPa
Elongation at break	10.4%
Heat deflection temperature	74 °C
Impact, notched	15.7 kJ/m²
Character	Stiff at ambient temperature

Note the heat deflection figure: 74 °C is the lowest of the ten grades we print in FDM. If your part will run warm, say so at quote and we’ll price it in PET-CF instead.

Download PETG-CF datasheet (PDF) ↓

Price & lead time

PETG-CF 3D printing cost and lead time

Carbon-filled material, priced online the moment the CAD lands — no enquiry form, no waiting for a manual quote to come back.


Pricing	Instant online quote — upload CAD, select PETG-CF, see the price
Turnaround	1–3 days express available
Minimum order	None — single brackets welcome
Maximum	Instant pricing on orders up to 100,000 parts
Part size	Up to 500 × 500 × 900 mm in one piece
Printed in	Shipston-on-Stour, Warwickshire — shipped UK-wide

Price my PETG-CF parts →

Why PETG-CF

Why choose FDM PETG-CF

●

Carbon reinforced

Chopped carbon fibre stiffens the part so brackets and fixtures resist deflection under steady load rather than slowly bending out of true.

●

Dimensionally steady

PETG is far less prone to the shrinkage and warp that make wide flat styrenic parts awkward, and the fibre loading steadies it further.

●

Matte technical finish

The carbon loading gives a low-gloss black surface that reads as an engineered component rather than a printed one.

●

Up to 900 mm in one piece

Long fixtures, rails and frame components on our large-format platform — no splitting, no bonded joints.

●

Instant online pricing

Carbon-filled parts costed the second you upload the CAD, with no minimum order quantity.

●

Honest specification at quote

If 74 °C is too close to your service temperature, we will tell you before you buy, not after.

Design guidance

Designing for PETG-CF

Typical guidelines for FDM PETG-CF. We’ll confirm the specifics for your part with a free design-for-additive review at quote.

Design feature	Typical guideline
Build envelope (FDM)	500 × 500 × 900 mm in one piece
Turnaround	1–3 days express available
Service temperature	Ambient only — 74 °C heat deflection. Direct sun on a dark part, a warm cabinet or a nearby motor can all reach that
Bigger than the bed?	Split, print, bond & inspect the finished assembly
Load orientation	Stiffest in-plane — fibre alignment follows the toolpath, so we orient deflection paths at quote
Fibre & wear	Carbon-filled grades are abrasive in service against soft mating parts — worth checking bearing and sliding interfaces
Finish	Bead blasted, smoothed, primed or A-class painted in-house

Get an instant quote → About our FDM service

Honest limits

Where PETG-CF is the wrong call

This grade has a narrower window than most of our range, and we would rather set it out plainly than have a part soften on you. Any of these apply, and we’ll spec the better grade free with your quote.

Anything warm

74 °C is the lowest heat deflection temperature we print. One letter away, PET-CF holds 205 °C — nearly three times as much — and is the direct step up for the same kind of fixture.

Impact & abuse

At 15.7 kJ/m² this is the least impact-tough grade in the general-purpose group. Where parts get dropped or knocked, ABS (21.5) or ASA (19.6) absorb far more.

Real load-carrying parts

Carbon-filled is not the same as strong: 35 MPa is a light-duty figure. For load-bearing brackets, PA6-GF (80 MPa) or PA6-CF (109 MPa) are the grades that carry it.

Outdoor exposure

PETG-CF is not UV-stabilised, and the 74 °C ceiling makes direct summer sun a genuine risk on a dark part. Outdoors, use ASA.

Flexing features

10.4% elongation is mid-range and the fibre makes it less forgiving still. For snap-fits and living hinges, ABS at 10.5% is the more suitable grade.

Flame-rated parts

No flame rating. Where ignition is the constraint, specify PC-FR flame retardant polycarbonate, our only UL94 V-0 grade.

Compare

PETG-CF vs ABS vs ASA

Worth being blunt: across the four figures we publish, PETG-CF does not top a single column. It wins on the row that is not a number — carbon reinforcement, and the rigidity and dimensional steadiness that come with it. Pick it when a fixture has to hold its shape at room temperature. Pick ABS when cost and toughness matter more, ASA when it is going outside, and PET-CF the moment heat enters the brief. Full range on all FDM materials.

Property	PETG-CF (this page)	ABS	ASA
Carbon reinforced	Yes	No	No
Tensile strength	35 MPa	33 MPa	37 MPa
Elongation at break	10.4%	10.5%	9.2%
Heat deflection	74 °C	87 °C	100 °C
Impact, notched	15.7 kJ/m²	21.5 kJ/m²	19.6 kJ/m²
Best for	Stiff ambient brackets	Cost-effective prototypes	Outdoor parts & enclosures

FDM

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FAQ

FDM PETG-CF FAQ

What is PETG-CF carbon fibre PETG?

PETG-CF is PETG reinforced with chopped carbon fibre, printed on our large-format FDM platform. The fibre stiffens the part and gives a matte black technical finish. It offers 35 MPa tensile strength, 10.4% elongation and 15.7 kJ/m² notched impact, with a 74 °C heat deflection temperature. It is specified for brackets, jigs and fixtures that stay at ambient temperature.

PETG-CF or PET-CF — what is the difference?

One letter, and a very large difference in heat resistance. PETG-CF has a 74 °C heat deflection temperature; PET-CF holds 205 °C, roughly three times as much, and is stronger at 74 MPa against 35 MPa. PETG-CF is the ambient-temperature option and prints on our large-format platform up to 900 mm; PET-CF runs in our dedicated high-temperature chamber. If the part will ever be warm, specify PET-CF.

How strong is PETG-CF?

35 MPa tensile strength with 10.4% elongation and 15.7 kJ/m² notched impact. Carbon reinforcement makes it stiff rather than strong — the fibre resists deflection and bending under steady load, but the tensile figure is light-duty. For genuinely load-bearing parts, PA6-GF at 80 MPa or PA6-CF at 109 MPa are the appropriate grades.

How much heat can PETG-CF take?

Its heat deflection temperature is 74 °C, the lowest of the ten FDM grades we print. That is lower than it sounds in practice: direct summer sun on a dark part, an enclosed cabinet or proximity to a motor can all approach it. Treat PETG-CF as an ambient-temperature material and step up to PET-CF at 205 °C if there is any doubt.

What is PETG-CF used for?

Technical brackets, assembly fixtures, jigs and workholding, machine guarding, frame and rail components, camera and sensor mounts, panel supports, robotics mounts and test rig parts — up to 500 × 500 × 900 mm in one piece.

PETG-CF or ABS — which should I choose?

PETG-CF for rigidity and dimensional steadiness in a fixture that must hold its shape; ABS for cost, impact toughness and ductility. ABS is tougher (21.5 vs 15.7 kJ/m²), marginally more ductile (10.5% vs 10.4% elongation) and handles more heat (87 vs 74 °C). PETG-CF earns its place on carbon reinforcement and the stiffness that comes with it, not on those four numbers.

Is PETG-CF good for outdoor use?

No. It is not UV-stabilised, and the 74 °C heat deflection temperature makes direct sunlight on a dark part a real risk in summer. ASA is the UV-stable grade for anything living outdoors.

How much does PETG-CF 3D printing cost?

Upload your CAD to our instant online quote and select FDM PETG-CF — the price appears immediately, with no minimum order and instant pricing on runs up to 100,000 parts.

Where can I find PETG-CF material properties and a datasheet?

The key material properties are listed above, and you can download the full PETG-CF datasheet (PDF) or have it confirmed with your instant online quote.

How do I order PETG-CF 3D printed parts in the UK?

Upload your CAD to our instant online quote and select FDM PETG-CF. As a UK 3D printing service bureau we print, finish and inspect in-house in Shipston-on-Stour, Warwickshire, and ship UK-wide — from a single fixture to a production batch.

Get your PETG-CF parts priced in seconds.

Upload your CAD for an instant online quote in FDM PETG-CF carbon fibre PETG — from a single bracket to a batch of assembly fixtures. Printed and finished in the UK.

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Printed and finished at our own ISO 9001 facility in Shipston-on-Stour, Warwickshire. Call us on 024 7736 0144.