PC FR Flame-Retardant 3D Printing | Cortecs Parts

UL 94-2023 V-0 rated material

Tested by the manufacturer to meet the UL 94-2023 V-0 standard, the top level of flame resistance for 3D printing filament, with self-extinguishing behaviour for parts near electrical equipment.

Strongest material we stock

Tensile strength of 60 MPa and bending strength of 90 MPa, roughly double PETG.

Stable past 110 °C

Heat deflection at 113 °C and a glass transition of 145 °C. The most heat-tolerant material we offer.

Applications

What PC FR is used for

Typical jobs we print in PC FR. If your part is similar to any of these, PC FR is likely the right choice.

Electrical enclosures

Junction covers, control boxes, terminal covers, and panel hardware.

Electronics housings

Enclosures for power supplies, chargers, battery packs, and control electronics.

Brackets near heat

Mounts and hardware inside warm equipment enclosures, near lighting, or around appliances.

Industrial components

Guards, covers, and fixtures for demanding shop and plant environments.

CAD render of a flame-retardant polycarbonate junction cover with mounting flanges and cable gland opening — CAD render: junction cover with cable gland, PC FR Gray

CAD render of a 3D printed DIN rail adapter mounting plate — CAD render: DIN-rail adapter plate, PC FR Gray

CAD render of a 3D printed 80 mm fan guard with mounting tabs — CAD render: 80 mm fan guard, PC FR Gray

CAD render of a 3D printed cable gland plate with multiple gland holes — CAD render: cable gland plate, PC FR Gray

CAD render of a 3D printed electronics mounting plate with standoffs — CAD render: standoff mounting plate, PC FR Gray

CAD render of a set of three 3D printed hex insulator standoffs — CAD render: insulator standoffs, PC FR Gray

CAD render of a 3D printed electrical box extender ring — CAD render: box extender ring, PC FR Gray

CAD render of a 3D printed vented terminal cover with end flanges — CAD render: vented terminal cover, PC FR Gray

Colours

PC FR colours in stock

Currently stocked in one colour. Other colours can be ordered for your job on request.

Gray

Specifications

Material properties

Values below are from the manufacturer's technical data sheet for the polycarbonate we print with (Bambu Lab PC FR), tested to the ISO standards listed.

Physical

Property	Method	Value
Density	ISO 1183	1.18 g/cm³
Heat deflection temp.	ISO 75, 0.45 MPa	113 °C
Heat deflection temp.	ISO 75, 1.8 MPa	108 °C
Vicat softening temp.	ISO 306	114 °C
Glass transition temp.	DSC, 10 °C/min	145 °C
Water absorption (saturated)	25 °C, 55% RH	0.12%

Mechanical

Property	Method	Value
Tensile strength	ISO 527	60 ± 4 MPa
Young's modulus	ISO 527	1670 ± 40 MPa
Bending strength	ISO 178	90 ± 4 MPa
Bending modulus	ISO 178	1890 ± 70 MPa
Elongation at break	ISO 527	2.4 ± 0.3%
Impact strength (Charpy)	ISO 179	55 kJ/m²

Mechanical values are measured in the X–Y print plane. Strength across layer lines is significantly lower (tensile strength approximately 21 MPa in Z), so print orientation matters more for PC FR than for our other rigid materials; we orient every part around its load direction. PC FR is rigid with low elongation: choose TPU where a part needs to flex. The manufacturer tests the material to the UL 94-2023 V-0 standard; flammability behaviour of a printed part also depends on its geometry, and a printed part carries no UL listing of its own.

Common questions

PC FR printing FAQ

Is PC FR certified for electrical applications?

The filament is tested by the manufacturer to meet the UL 94-2023 V-0 standard, the top level of flame resistance for 3D printing filament, with self-extinguishing behaviour. That rating applies to the material as tested by Bambu Lab: a printed part does not carry a UL listing or other certification of its own, so for regulated or inspected installations confirm the requirements with your inspector before specifying a printed component.

How hot can PC FR parts get?

PC FR holds its shape past 110 degrees Celsius under load, with a glass transition temperature of 145 degrees. It is the right material for warm enclosures and equipment, though not for direct flame or engine-exhaust temperatures.

When should I choose PC FR over PETG?

Choose PC FR when the part needs maximum strength, heat tolerance above roughly 70 degrees, or flame-retardant behaviour near electrical equipment. For everyday parts, PETG does the job at a lower price. PC FR is an engineering material and is priced as one.

How much does a PC FR print cost?

PC FR is our most expensive standard material. Upload a file or describe the part and you will receive a print and shipping price within one business day, with no obligation.

Have a part in mind?

Upload a file or describe what you need. Price back within one business day.

Request a PC FR quote

PC FR parts: flame-retardant strength, made to order