Name: Prusament PC Blend Carbon Fiber
Brand: Prusa

Extra Features

Compact row for standout or material-specific features only.

Composite1.75 mm, 800 g Spool114°C HDT at 0.45 MPa106°C HDT at 1.80 MPaUp to Approximately 130°C After AnnealingLow WarpingHigh Wear ResistanceUV Stable

Detailed Description

# Prusament PC Blend Carbon Fiber

Overview

Prusament PC Blend Carbon Fiber is a carbon-fibre-filled polycarbonate blend from Prusa Polymers for demanding engineering, industrial, tooling and production parts. Carbon-fibre reinforcement improves stiffness, dimensional stability, heat resistance and printability while reducing warping.

Prusament reports 114°C HDT at 0.45 MPa and 106°C at 1.80 MPa. Controlled annealing can increase manufacturer-stated temperature resistance to approximately 130°C. The material is also UV stable, chemically resistant and has a matte-black finish.

For easier rigid materials, compare Prusament ASA, Prusament PETG and Polymaker PLA Pro.

Key Benefits

114°C HDT at 0.45 MPa
Up to approximately 130°C after annealing
High stiffness and dimensional stability
Low warping
UV and chemical resistance
High wear resistance
Matte carbon-fibre finish
Enclosure not required
Recycled carbon fibres

Best For

High-temperature engineering parts
Machine components and fixtures
Tooling and production aids
Mechanically stressed parts
Large technical components

Technical Specifications

Specification	Value
Material Type	Composite
Chemistry	Polycarbonate Blend filled with Carbon Fiber
Printing Compatibility	FDM
Applications	Engineering, Industrial, Tooling, Production
Print Temperature	275–295°C
Bed Temperature	100–120°C
Print Speed	Up to 200 mm/s
Format	1.75 mm, 800 g spool
Diameter Tolerance	±0.04 mm
Tensile Yield Strength	64 ± 3 MPa horizontal; 70 ± 3 MPa vertical XZ
Tensile Modulus	2.6 ± 0.1 GPa horizontal; 3.2 ± 0.1 GPa vertical XZ
Interlayer Adhesion	23 ± 2 MPa
Heat Deflection Temperature	114°C at 0.45 MPa; 106°C at 1.80 MPa
Enclosure	Not required
Abrasive	Yes
Cooling	Normally off; up to 20% for bridges
Post-Processing	Wet or dry sanding; annealing supported
Storage / Drying	90°C for 4 h if needed
Colour / Finish	Black; matte carbon-fibre finish
Price	US$59.99 per 800 g spool — check manufacturer’s current listing

Note: Mechanical and thermal values are manufacturer test results and depend on orientation, geometry, processing and test conditions.

Important: Carbon fibres are highly abrasive. Use a hardened steel or equivalent wear-resistant nozzle.

Printing Compatibility

Recommended Setup

285 ±10°C nozzle
110 ±10°C heated bed
Hardened wear-resistant nozzle required
Satin or textured powder-coated sheet recommended
Smooth PEI only with a separation layer
Cooling normally off
Enclosure not required

The Prusa CORE One+ is suitable after replacing its standard brass nozzle with a hardened abrasion-resistant nozzle.

The Bambu Lab H2D and Creality K2 Plus are also suitable high-temperature platforms when configured for abrasive filament. The Bambu Lab P2S can use the central 285°C / 110°C settings but must remain within its bed-temperature limit.

Important: Prusament states that an enclosure is not required because carbon fibres substantially reduce warping.

Important: Avoid direct printing on smooth PEI unless a suitable separation layer is used.

Mechanical Profile

Property	Information
Tensile yield strength	64 ± 3 MPa horizontal; 70 ± 3 MPa vertical XZ
Tensile modulus	2.6 ± 0.1 GPa horizontal; 3.2 ± 0.1 GPa vertical XZ
Flexural strength	94 ± 3 MPa horizontal; 130 ± 2 MPa vertical XZ
Interlayer adhesion	23 ± 2 MPa
Charpy impact strength	32 ± 5 kJ/m² horizontal; 35 ± 4 kJ/m² vertical XZ
HDT	114°C at 0.45 MPa; 106°C at 1.80 MPa
Rigidity	High
Dimensional stability	Excellent
Warping	Low
Abrasivity	High

Processing and Handling

Print at approximately 285 ±10°C with a 110 ±10°C bed. The technical datasheet lists speeds up to 200 mm/s, normally with cooling off except limited bridge cooling.

Use a hardened nozzle and Satin or textured powder-coated sheet. Smooth PEI requires a separation layer. Drying is normally unnecessary; if needed, dry at 90°C for 4 hours.

Annealing

Prusa specifies 140°C for 120 minutes. Properly annealed parts can reach approximately 130°C manufacturer-stated temperature resistance with less than approximately 1% shrinkage.

Colour and Finish

Black
Matte carbon-fibre appearance
800 g standard spool
2 kg packaging also available

Comparison Section

Feature	Prusament PC Blend Carbon Fiber	Prusament ASA	Prusament PETG	Polymaker PLA Pro
Material family	Carbon-fibre PC	ASA	PETG	Toughened PLA
Nozzle temperature	275–295°C	255–265°C	240–260°C	210–230°C
HDT / heat resistance	114°C at 0.45 MPa	93°C at 0.45 MPa	~68°C HDT	55.6°C at 1.8 MPa
Warping	Low	High	Low	Low
Abrasive	Yes	No	No	No
Hardened nozzle	Required	No	No	No
Enclosure	No	Recommended for larger parts	No	No
Typical use	High-temperature engineering and tooling	Outdoor / automotive	General engineering	High-speed prototypes and fixtures

Recommended use: Choose Prusament PC Blend Carbon Fiber for high stiffness, dimensional stability and elevated-temperature performance. Choose Prusament ASA, Prusament PETG or Polymaker PLA Pro when easier processing is preferred.

Callout Section

Recommended use: Best for high-temperature, mechanically stressed and dimensionally critical parts. Suitable indexed printers include the Prusa CORE One+, Bambu Lab H2D and Creality K2 Plus when equipped for abrasive filament.