FDM · Filaments · High performance
PEEK filament
The top of the high-performance polymers.
What is PEEK?
PEEK is a high-performance thermoplastic offering high mechanical strength, chemical resistance, thermal stability and fire resistance. It is preferred for complex and demanding industrial parts.
Consult our engineers for values specific to your application.
- Heat resistant
- High strength
- Chemical resistant
- Flame retardant
- Lightweight
Top class
The peak of high-performance polymers; tensile strength 100 MPa, flexural strength 170 MPa.
Chemical resistance
Exceptionally resistant to aggressive chemicals, oils and fuels.
Thermal stability
Keeps its mechanical properties at high temperatures; fire resistant.
Critical industries
Can replace metal parts in the most demanding applications such as aerospace, defense and medical.
Technical data
Manufacturer datasheet values.
| Density | 1.29 g/cm³ |
|---|---|
| Tensile strength | 100 MPa |
| Elongation at break | 40% |
| Flexural strength | 170 MPa |
| Flexural modulus | 4200 MPa |
| Izod impact strength | 6.5 kJ/m² |
| Glass transition temperature (Tg) | ≈ 143 °C (typical) |
| Melting temperature | ≈ 343 °C (typical) |
| Continuous use temperature | ≈ 250 °C (typical) |
Design guidelines for PEEK
General guidelines for FDM technology. All design guidelines
- Minimum wall thickness0.8 mm
- Smallest detail0.4 mm (nozzle diameter)
- Clearance for moving parts0.3 – 0.6 mm
- Text and logosEmbossed ≥ 0.6 mm, engraved ≥ 0.8 mm
- Minimum hole diameterØ 2 mm
- Unsupported overhang angle≥ 45° from horizontal; flatter surfaces need support
Applications
- Aerospace and defense
- Medical applications
- High-temperature environments
- Parts exposed to chemicals
Advantages
- The peak of polymers: can replace metal
- Resists fuel, oil and aggressive chemicals
- Keeps its properties at high temperatures; flame retardant
- Sterilizable grades available
Limitations
- Requires very high print temperatures and special machines
- Expensive
Comparison
PEEK and alternatives
| Property | PEEK | PEKK | ULTEM™ 1010 | PPS-CF |
|---|---|---|---|---|
| Density | 1.29 g/cm³ | 1.28 g/cm³ | 1.27 g/cm³ | 1.35 g/cm³ |
| Tensile strength | 100 MPa | 93 MPa | 81 MPa | 80 MPa |
| Elongation at break | 40 % | 4 % | 3 % | 2 % |
| Modulus (stiffness) | 4.2 GPa | 3.3 GPa | 2.8 GPa | 7 GPa |
| Heat deflection (0.45 MPa) | 150 °C | 150 °C | 216 °C | 240 °C |
Values are averages of typical ranges; see each material page for details.
Good to know
Frequently asked questions about PEEK
What is PEEK?
PEEK is a high-performance thermoplastic offering high mechanical strength, chemical resistance, thermal stability and fire resistance. It is preferred for complex and demanding industrial parts.
Is PEEK heat resistant?
The heat deflection temperature (0.45 MPa) of PEEK is about 150 °C. This is high; it can be used near engine bays, in hot air and steam.
Can PEEK be used outdoors?
Yes. PEEK has good resistance to UV light and weather; it is suitable for outdoor parts.
Which parts are made with PEEK?
PEEK is typically used in applications such as aerospace and defense, medical applications, high-temperature environments, parts exposed to chemicals.
Which material can be used instead of PEEK?
Depending on the application, PEKK, ULTEM™ 1010, PPS-CF can be alternatives. You can see the differences in the comparison tables on the material pages.
Does TAİ Robotik produce with PEEK?
For PEEK, send us your part's dimensions, quantity and operating conditions; we will determine the best production route and, if needed, an equivalent alternative together.
Let's choose the right material together
Tell us your needs for this material or an alternative we can produce.