Plain PETG matrix + 8% recycled chopped carbon fibre (post-industrial manufacturer offcuts + decommissioned wind-turbine blade reclaim). +75% stiffer than plain PETG (3710 vs 2117 MPa modulus) · +18% tensile · the closed-loop CF composite for ESG-procurement-aware briefs.
Recycled carbon fibre 3D printing service (PETG-rCF08) · UK · quoted in 6 hours.
Recycled engineering composite for stiff jigs, brackets, and lightweight functional parts.
Four quick visuals. Start with which material to pick and where PETG-rCF08 works; the engineering detail is at the end if you want it.
PETG amorphous copolyester matrix (CHDM-modified PET) reinforced with 8% post-industrial recycled carbon fibre · chopped CF cuts that would otherwise become landfill or incinerator feed. The result: real mechanical upgrade with a real sustainability story.
PETG yields at 8.4% strain (33% more give than PLA's 6.3%). Notched Charpy is similar to PLA (2.6 vs 3.3 kJ/m²) · the real win is yield behaviour on impact. For raw toughness: ABS at 18.0 kJ/m² (7× higher) or PA12-CF for engineering-grade.
"James handled the 3D printing for a functional heat resistant component we needed in batch production. He helped dial in the prototype first with their design service, then produced the final batch with really consistent results. Super fast 3D print turnaround and great quality across all the 3D printed parts. Will 100% be coming back."
"We needed a sit-in F1-car for an exhibition to showcase our new racing game. 3D Printing Express took our CAD, optimised it for strength and weight as we had no idea how it all worked! Turned out beautifully. They colour matched the finish and was looking like the real deal. On show day the cockpit ran non-stop, adults and kids jumped in. Multiple visitors asked who built it."
"We ordered a batch of 100 PA-12 parts from 3D Printing Express and could not be happier. Every part arrived consistent, dimensionally accurate, and ready for use straight from the box. The PA-12 gave us the strength and stability we needed for functional testing, with minimal post-processing required. Delivery was on time, communication was excellent, and their QC clearly made a difference."
+18% over plain PETG (50.8 MPa). The chopped CF orients along the print path · the real engineering gain here is stiffness (+75% modulus), not tensile.
+75% stiffer than plain PETG (2117 MPa) · comparable XY modulus to PA12-CF (3311 MPa) though far below its heat/strength. Lighter parts for the same deflection budget, at a fraction of PA12-CF cost.
Post-industrial recycled CF · UK/EU carbon-fibre manufacturer offcuts plus decommissioned wind-turbine blade reclaim. Closed-loop composite recycling for ESG-procurement-aware briefs.
Tg 69.7°C · sustained service caps at ~65°C ambient. The matrix Tg sets the ceiling · the CF reinforcement doesn't lift it. For warm service step up to PA12-CF (130°C class).
PETG-rCF08 earns its place when stiffness and dimensional stability matter, when service stays at room temperature, and when an ESG-defensible composite story counts in the procurement conversation.
PETG-rCF08's strengths are stiffness, dimensional stability, and the ESG sustainability story · its weaknesses are anything that demands heat above 65°C, real impact toughness, food-contact, ESD-class, or coloured parts. Pick a different material if any of these apply.
+75% stiffness uplift over plain PETG gives real weight-to-stiffness improvement on multirotor airframes · without going to PA12-CF cost/brittleness. Base PETG ductility absorbs landing impacts that crack PA12-CF arms. Closed-loop CF story fits aerospace-adjacent and university-research procurement.
Stable under cantilever load, holds tolerance better than plain PETG, and the matt-black composite aesthetic reads "engineering part" in demonstrations. For room-temperature robotics work · sustained service envelope is 65°C ambient.
Automotive R&D, aerospace-adjacent, and large-corporate clients with recycled-content procurement requirements. The post-industrial rCF (manufacturer offcuts + decommissioned blade reclaim) supports Scope 3 emissions reporting and circular-economy compliance.
Drop-in stiffness upgrade for plain-PETG brackets that flex under service load · same matrix, same print path, nearly 2× the Young's modulus. Faster and lower-cost than aluminium machining for short production runs (10-200 units).
The three options most engineers compare when picking a CF-reinforced or PETG-family material. Plain PETG is ductile but flexes. PA12-CF is the engineering benchmark at heavy filament cost and 130°C service. PETG-rCF08 sits between · +75% stiffer than plain PETG with a closed-loop CF sustainability story, at room-temperature service.
Mechanical values from manufacturer Technical Data Sheets · injection-moulded ISO test specimens (ISO 527 tensile + Young's modulus, ISO 75 HDT, ISO 179 Charpy notched). PETG-rCF08's wedge is meaningful stiffness uplift over plain PETG (+75% Young's, +18% tensile) at roughly half the filament cost of PA12-CF · with the room-temperature service trade-off.
| Property | PETG-rCF08 (here) | Plain PETG | PA12-CF |
|---|---|---|---|
| Tensile strength XY | 59.8 MPa | 38.6 MPa | 86.4 MPa |
| Stiffness (Young's modulus XY) | 3710 MPa | 2117 MPa | 3311 MPa |
| Flexural strength XY | 94.6 MPa | 54 MPa | 120 MPa |
| Charpy notched impact | 4.0 kJ/m² | 2.6 kJ/m² | 12.8 kJ/m² |
| Elongation at break XY | 5.7% | 8.4% | 2.2% |
| Heat deflection (HDT 1.8 MPa) | 65.7°C | 72°C | 130°C |
| Glass transition (Tg) | 69.7°C | 77°C | 155°C |
| Density | 1.30 g/cm³ | 1.24 g/cm³ | 1.10 g/cm³ |
| Sustainability story | 8% post-industrial rCF · closed-loop | Virgin petrochemical (food-cert.) | Virgin petrochemical, virgin CF |
| Nozzle requirement | Hardened steel · CF abrasive | Brass acceptable | Hardened steel · CF abrasive |
| Print path | Standard FDM · any 250°C+ hotend, no chamber | Standard FDM · easiest | Engineering · 280°C+ hotend, heated chamber |
| Available colours | Matt black only (rCF) | Wide range | Matt black only |
| Cost per kg (filament) | £55-80 | £25-35 | £90-130 |
| Best for | ESG-procurement stiff functional parts · drone airframes · robotics housings · room-temp jigs | Ductile commodity parts, water-contact, food-prototypes, signage | Engineering parts under warm service, sustained load, structural duty >65°C |
This is 3DPE's standard process for PETG-rCF08 · the equipment and the dried-filament discipline are included, no surcharge. Slicer profile and orientation are tuned per part at quote stage.
File or sketch in. Tell us load case, service temperature, and whether ESG documentation is required for procurement.
Reviewed inside 24 hours · per-unit cost + rCF-content declaration line item if requested.
Wall thickness, overhang, fibre-orientation favourable load paths flagged before print. Reduced ductility means thin features cracked-not-bent under impact.
Filament dried at 65°C for 3 hours · calibrated 260-275°C hotend on a hardened-steel nozzle (CF abrasive). Matt black only.
Support removal, deburr to spec · sand to 800 grit if cosmetic · 2K topcoat if a coloured finish is required.
Tracked UK courier, tracking number sent the moment it leaves. ESG content declaration with rCF mass-fraction available on request.
Lead times start when CAD is signed off · ESG content declaration adds ~half a day for paperwork. Coloured topcoat adds 24h cure.
Batch of 24 quad-rotor airframes for a UK university aerospace-research group. ESG-content procurement requirement specified recycled-content engineering material for the project. PETG-rCF08 delivered the stiffness needed for clean flight envelope (+75% Young's uplift over plain PETG) while base-matrix ductility kept arms intact across multiple practice crashes. Closed-loop rCF content declaration paired with the delivery for Scope 3 reporting.
PETG-rCF08 is glycol-modified PETG reinforced with 8% (by mass) recycled chopped carbon fibre. The base PETG matrix is an amorphous copolyester · same chemistry that plain PETG inherits from PET water bottles. The 8% rCF loading drives the mechanical uplift: Young's modulus 3710 MPa (+75% vs plain PETG's 2117), tensile XY 59.8 MPa (+18% vs 50.8), flexural 94.6 MPa (+36% vs 69.6). The CF comes from post-industrial scrap · UK and EU carbon-fibre manufacturer offcuts plus decommissioned wind-turbine blade reclaim · closed-loop recycling at the composite level rather than landfill. Tg 69.7°C, HDT 65.7°C @ 1.8 MPa · service caps at ~65°C ambient. Density 1.30 g/cm³. The rCF additive disqualifies food-contact certification · for food-prototype work specify plain PETG.
"PETG-rCF08 is the right answer when a plain-PETG bracket is flexing under its own service load and the brief also asks 'what's the sustainability story?'. We get +75% more Young's modulus for the same print path, and the rCF comes from carbon-fibre manufacturer offcuts that would otherwise be incinerated · a real second-life supply chain, not greenwash. The catches are a hardened-steel nozzle (CF is abrasive · brass nozzles drift after a kilogram), matt black only, and the same 65°C service ceiling as plain PETG · the reinforcement adds stiffness, not heat capability. For warmer service we step up to PA12-CF."
Three questions worth answering before specifying PETG-rCF08 · where the recycled CF actually comes from, how the 8% loading lifts the mechanicals, and why the service ceiling stays at 65°C.
Base PET is the most-produced thermoplastic on Earth · food bottles, packaging, polyester fibre. Glycol modification (CHDM replaces some ethylene glycol) breaks the crystal symmetry, prevents crystallisation, and makes PET 3D-printable on FDM without the warping of crystalline PET.
PETG-rCF08 absorbs water from humid air, saturating at ~0.55% per the manufacturer TDS. Wet filament prints stringy, milky, brittle. The fix is straightforward · pre-print drying at 65°C for 3 hours (manufacturer setting). We do this on every spool before the bed.
The 8% rCF content is post-industrial scrap, sourced from two main streams. The first is manufacturer cutting waste: when carbon-fibre prepreg is laid up for aerospace, automotive, or sporting-goods parts, the offcuts are non-load-bearing scrap that historically went to landfill or incineration. UK and EU CF prepreg producers now sell this stream to recyclers who mill it into chopped fibre for engineering compounds. The second is decommissioned wind-turbine blade reclaim · a growing waste stream as the first generation of UK and European wind turbines reach end-of-life. Blade composites are pyrolysed or mechanically processed to recover the carbon fibre.
The recycled chopped fibre is roughly 100-500 microns long after processing · long enough to deliver meaningful mechanical reinforcement in the PETG matrix but short enough to spool through standard 1.75 mm filament without aggregation. The 8% by mass loading is a deliberate sweet spot: enough to deliver the +18% tensile and +75% stiffness gain seen on this page, while staying below the loading where filament becomes too brittle to spool reliably. For ESG-procurement-aware briefs, the rCF mass-fraction declaration is available on request and supports Scope 3 reporting (recycled vs virgin material accounting) plus circular-economy compliance.
Three mechanisms. First, the chopped fibres are an order of magnitude stiffer than the polymer matrix (~230 GPa modulus for CF vs ~2 GPa for plain PETG) · stress applied to the part is preferentially transferred to the fibres, raising the bulk Young's modulus along the load path. Second, the FDM extrusion process aligns the chopped fibres along the print path · this means PETG-rCF08 prints with anisotropic reinforcement that favours XY load paths (Z-axis values are correspondingly weaker · 41 MPa tensile Z vs 60 MPa XY). Third, the fibres provide a small toughening contribution by bridging incipient cracks · Charpy notched lifts from 2.6 kJ/m² (plain PETG) to 4.0 kJ/m² (PETG-rCF08).
The trade-off is reduced ductility · the rigid fibres limit polymer chain mobility, so elongation at break drops from 8.4% (plain PETG) to 5.7% (PETG-rCF08). Thin features that would bend in plain PETG can crack in rCF08. For design, this means PETG-rCF08 is the right call for stiff bracket geometries with generous wall thickness · less appropriate for snap-fits, living hinges, or anywhere flex matters.
The heat ceiling is set by the matrix Tg, not the reinforcement. Carbon fibre itself is stable to 500°C+, but it's the PETG matrix around the fibres that softens · once Tg is passed (69.7°C for PETG-rCF08, DSC 10°C/min) the polymer chains gain mobility, stiffness collapses, and the fibres are now suspended in a soft matrix that creeps under load. HDT at 1.8 MPa is 65.7°C, at 0.45 MPa 68.6°C. Vicat 81.6°C. For sustained service the practical ceiling is ~65°C ambient.
For warmer service the upgrade path is PA12-CF · same CF-reinforcement principle but with a polyamide matrix (Tg ~155°C, HDT 130°C+ class). The cost roughly doubles (PA12-CF £90-130/kg vs PETG-rCF08 £55-80/kg) and the print path requires a heated chamber, but warm-service or sustained-load engineering parts demand it.
Steam autoclave at 121°C is well above HDT · parts deform. For sterilisation, ethylene oxide or IPA wipe-down work for PETG; dry-heat sterilisation below 70°C also works. For repeated steam autoclave service specify PEEK or PPSU. For sustained warm-service parts (engine bay, exhaust-adjacent, oven-adjacent) choose ABS or ASA (HDT 100°C class) or PA12-CF (HDT 130°C+ class).
Values measured to the ISO standards cited in the right-hand column, on the manufacturer's own injection-moulded test specimens · directly comparable to other engineering thermoplastics.
| Property | XY · print plane | Z · build axis | Unit | Standard |
|---|---|---|---|---|
| Mechanical | ||||
| Tensile strength | 59.8 | 41.1 | MPa | ISO 527 |
| Young's modulus | 3710 | 2652 | MPa | ISO 527 |
| Elongation at break | 5.7 | 1.9 | % | ISO 527 |
| Flexural strength (XY) | 94.6 | MPa | ISO 178 | |
| Flexural modulus (XY) | 3779 | MPa | ISO 178 | |
| Charpy impact (notched, XY) | 4.0 | kJ/m² | ISO 179 | |
| Thermal | ||||
| Heat deflection (HDT @ 0.45 MPa) | 68.6 | °C | ISO 75 | |
| Heat deflection (HDT @ 1.8 MPa) | 65.7 | °C | ISO 75 | |
| Glass transition temperature (Tg) | 69.7 | °C | DSC, 10°C/min | |
| Vicat softening temperature | 81.6 | °C | ISO 306 | |
| Physical | ||||
| Density | 1.30 | g/cm³ @ 23°C | ISO 1183 | |
| Equilibrium water absorption | 0.55 | % | manufacturer test | |
| Melt index | 11.5 | g/10min | 230°C, 2.16kg | |
| Surface resistivity | OL, >10^12 (insulator · NOT ESD-rated) | Ω/sq | ANSI ESD S11.11 | |
| Tensile anisotropy ratio | 1.45× | XY/Z | derived from ISO 527 | |
| Chemical resistance · manufacturer-rated | ||||
| Weak acids | Good | · | manufacturer TDS | |
| Strong acids | Poor | · | manufacturer TDS | |
| Weak alkalis | Fair | · | manufacturer TDS | |
| Strong alkalis | Poor | · | manufacturer TDS | |
| Oils and grease | Good | · | manufacturer TDS | |
| Cosmetic / supply | ||||
| Stock colour range | Matt black with CF speckle (only colour available · rCF grade) | · | workshop stock | |
| Custom RAL match | No · rCF intrinsic black. Coloured topcoat post-print (+0.05-0.15 mm, +24h cure) | · | overcoat workflow | |
| Finish grades available | Matt-black as-printed (visible fibre orientation), sanded, painted | · | workshop stock | |
| rCF source | 8% post-industrial · UK/EU CF mfr scrap + wind-turbine blade reclaim | · | manufacturer disclosure | |
PETG-rCF08's anisotropy is moderate (1.45× XY/Z · 59.8/41.1 MPa per supplier TDS) · the chopped CF orients along the print path and reinforces XY load paths preferentially. Z-axis values are correspondingly weaker · for load-bearing parts favour XY-direction load paths.
PETG's higher elongation (8.4%) means thin walls handle impact better than PLA's, but layer-line geometry still dominates. The values shown follow the Hubs / Protolabs Network FDM minimums (0.8 mm supported, 2.0 mm minimum feature) · we DFM-check the wall thickness against your part's load case at quote stage.
45° is the slicer-default support threshold across every major FDM tool · PETG's slower cooling and stickier hot state typically holds long bridges (5 mm+ at print temperature) better than PLA. Exact threshold depends on cooling, geometry, and surface-finish tolerance · we DFM-check overhangs at quote stage and recommend orientation.
PETG's amorphous structure means no crystallisation shrinkage on cooling (good) but the lower stiffness means slightly more deflection during finishing (modest). Exact tolerance depends on part size, geometry, and calibration · we confirm achievable tolerance against your CAD at quote stage.
Removes 0.1-0.3 mm per surface · pre-paint prep or stand-alone hand-feel polish.
Wet PETG (the spool has been in humid air more than ~3 days) prints stringy, milky, and brittle. Pre-print drying is per the manufacturer's recommended setting · we run this on every spool before the bed.
PETG takes paint with adhesion-promoting primer (PETG resists direct paint adhesion more than PLA). Adds 0.05-0.15 mm per surface · sand to 800 grit, primer + topcoat · paint also acts as a UV barrier for outdoor service.
The real food-contact risk on FDM PETG isn't the polymer · it's bacteria in micro-gaps between layers. A food-safe epoxy overcoat (we use NSF-certified two-part) bridges the layer-line porosity and gives a continuous sustainability-grade surface. Adds 0.05-0.1 mm per surface and 24 hours cure.
Every value on this page traces to an ISO test method · TDS values cross-checked against the supplier PDF in-session. We don't quote derived numbers without naming the standard.
For ESG-procurement-aware briefs we include an rCF mass-fraction declaration (8% post-industrial recycled content · UK/EU CF manufacturer offcuts + decommissioned wind-turbine blade reclaim) with the delivery. Supports Scope 3 reporting and circular-economy compliance.
Send three things: service temperature, load case, and whether ESG documentation is required. our team come back inside 24 hours · if plain PETG, PA12-CF, or another material fits better, we say so.
our team review every brief before quote. No ticket queue, no account managers.
According to the Fiberon PETG-rCF08 TDS, PETG-rCF08 reaches Young's modulus 3710 ± 151 MPa (XY) per ISO 527 with HDT 68.6 °C @ 0.45 MPa · recycled-CF + recycled-PETG composite, amorphous matrix.
Yes. We run a closed loop in our own workshop. Failed prints, purge, and support waste are collected, reground, and reprocessed here instead of going to landfill. That is standard on every PETG-rCF08 job, no surcharge.
The 8% chopped recycled carbon fibre lifts Young's modulus from 2117 MPa (plain PETG) to 3710 MPa · +75%, the headline gain. Tensile XY rises modestly 50.8 → 59.8 MPa (+18%); flexural 69.6 → 94.6 MPa (+36%). The trade is reduced ductility (elongation 8.4% → 5.7%) and a slight HDT drop. Net: stiffer, dimensionally stable, lightweight functional parts with a real closed-loop sustainability story. For impact-critical service, plain PETG or ABS still beats it.
The 8% recycled carbon fibre is post-industrial scrap · sourced from UK and EU carbon-fibre manufacturer cuts (cutting waste from prepreg lay-up production) plus decommissioned wind-turbine blade reclaim. This is closed-loop recycling at the composite level · the CF gets a second engineering-grade life instead of landfill or incineration. For ESG-procurement-aware clients, the rCF source supports both Scope 3 emission accounting (recycled material vs virgin) and circular-economy reporting. NOT food-contact certified · the rCF additive disqualifies food-grade use.
Service temperature is the decider. PETG-rCF08: 65°C ambient max (Tg ~70°C), printable on any 250°C+ FDM, ~£55-80/kg filament, recycled-CF sustainability story. PA12-CF: 130°C+ service, requires 280°C+ hotend and heated chamber, ~£90-130/kg filament, virgin CF. For room-temperature stiff jigs, fixtures, light brackets, drone arms · PETG-rCF08 wins on cost and ESG. For sustained warm service (under-bonnet, near equipment) or anything load-bearing above 65°C, PA12-CF.
Yes · the chopped CF is abrasive. Running PETG-rCF08 through a standard brass nozzle scores the bore within a kilogram or two of throughput and degrades flow consistency · part-to-part variation creeps in as the bore wears. We use hardened-steel or tungsten-carbide nozzles for every PETG-rCF08 job. Brass-on-CF is a DIY-maker failure mode.
PETG-rCF08 inherits the plain-PETG chemical profile. Per the base PETG TDS · GOOD against weak acids and oils/grease, POOR against strong acids and strong alkalis, FAIR against weak alkalis. Also dissolves partially in acetone and other ketones. For sustained chemical-service engineering parts use PA12 or PP. Match your specific exposure below.
| Chemical / family | Resistance | Notes |
|---|---|---|
| Weak acids (acetic, citric, dilute organic) | Good | Manufacturer TDS rating · short-term storage |
| Strong acids (sulphuric, HCl, nitric) | Poor | Manufacturer TDS rating · polymer chain breakdown |
| Weak alkalis (dilute soap, mild bleach) | Fair | Manufacturer TDS rating · short-term only |
| Strong alkalis (caustic soda, ammonia) | Poor | Manufacturer TDS rating · ester bond hydrolysis |
| Oils and grease | Good | Manufacturer TDS rating · sustained contact OK |
| Cold water, sea water (cold) | Excellent | PET-backbone hydrolytic stability · proven in bottles |
| Hot water (sustained > 60°C) | Limited | Approaches HDT · hydrolysis accelerates over months |
| Steam autoclave (121°C) | Fails | Above HDT · parts deform · choose PEEK / PPSU |
| Detergents, soap (mild) | Good | Dishwasher-style detergents · short-cycle only (heat above 60°C is the limit) |
| Alcohols (IPA, ethanol, methanol) wipe | Good | Surface cleaning, no soak |
| Acetone, MEK (ketones) | Poor | Partial dissolution · industrial degreaser, nail polish remover |
| Toluene, xylene (aromatic hydrocarbons) | Poor | Degrades over time |
| Petrol, diesel (brief contact) | Limited | Brief OK · sustained attacks the polymer |
| Chlorinated solvents (DCM, chloroform) | Poor | Strong solvents · industrial use only, workshop hazards |
| Swimming pool chemistry (chlorine, bromine) | Limited | Short-term OK · sustained immersion attacks the polymer |
| UV exposure (UK outdoor) | Limited | 6-12 months uncoated · multi-year requires overcoat or ASA |
| Outdoor weathering (sheltered) | Good | Rain-tight under cover, hydroponic outdoor, garden irrigation |
| Food contact | No | rCF additive disqualifies food-contact certification. For food-prototype work specify plain PETG. |
First five rows are direct manufacturer TDS ratings. Remaining rows reflect industry-typical PETG behaviour and 3DPE workshop experience · brief contact is always more forgiving than sustained exposure. For sustained chemical service beyond water and oils, switch material to ABS, PA12, or PP depending on the exposure.
Less than plain PETG, actually · the chopped CF fibres orient along the print path and locally reinforce, which damps thermal contraction during cooling. Bed adhesion on PEI or textured glass is good. Large flat parts stay flat. The main print issue is wet filament producing stringing and brittle layer adhesion · we dry every PETG-rCF08 spool at 65°C for 3 hours before printing (manufacturer setting).
Largely yes · the base PETG matrix retains the PET-backbone hydrolytic stability. Cold-to-warm water service is fine. The catch: 8% CF fibres at the part surface can act as wicking paths for sustained immersion · for indefinite-life immersed parts use plain PETG (cleaner waterproofing) or PP. For typical splash, occasional immersion, and humidity service, PETG-rCF08 is acceptable.
Two-part epoxy holds well · cyanoacrylate works but is weaker than on plain PETG. Ultrasonic welding works. For multi-part assemblies mechanical fasteners with heat-set brass inserts (245°C iron temp, minimum 2 mm boss thickness) are the most reliable joint · the CF fibres slightly resist insert-pull-out compared to plain PETG.
Modestly. Charpy notched goes from 2.6 kJ/m² (plain PETG) to 4.0 kJ/m² for PETG-rCF08 · about 50% better. The chopped fibres bridge crack propagation slightly. For raw impact toughness ABS at 18 kJ/m² is still 4.5× higher · the rCF buys stiffness and dimensional stability, not impact resistance.
Matt black only · the recycled-CF loading is intrinsically dark and rules out other colours. The matt finish has a distinct composite look (visible fibre orientation in raking light) that engineers often prefer over a moulded-plastic appearance. For coloured parts, post-print spray with a 2K topcoat over adhesion-promoting primer.
Sustained service caps at ~65°C ambient. Tg sits at 69.7°C and HDT at 65.7°C @ 1.8 MPa (the structural ceiling). Above this the matrix softens and creep begins · the CF reinforcement doesn't change the matrix Tg. For warm-service or near-equipment fixtures specify PA12-CF (HDT 130°C class).
No · chopped recycled CF at 8% loading sits below the conductive percolation threshold and the resulting matrix measures insulative on resistivity probes. PETG-rCF08 looks like a CF composite but it's NOT an ESD-class material. For ESD-bench fixtures specify PETG-ESD (CNT-loaded) or PA612-ESD.
Filament cost is roughly £55-80/kg for PETG-rCF08 · about 2× plain PETG (£25-35/kg), 60-70% of PA12-CF (£90-130/kg). The CF additive and the recycling supply chain both add cost over commodity PETG. For ESG-procurement-aware briefs the recycled-CF sustainability story usually justifies the premium · talk to us with the use case and we'll quote the actual job.
You'll hear back from our team within 24 hours · with material-fit check, rCF mass-fraction declaration plan, drying/lead-time confirmation, and PA12-CF step-up recommendation if you need above 65°C service.