PEEK CF30 for high rigidity and dimensional stability in precision machined components

PEEK CF30 is a grade of PEEK reinforced with 30 percent carbon fibers. The reinforcement increases stiffness and reduces thermal expansion, making it suitable for precision machined components.

Choose CF30 when dimensional stability and low thermal expansion are more critical than impact resistance. CF30 is preferred for precision and high-temperature applications.

Yes. Carbon fiber reinforcement increases abrasiveness and stiffness, requiring sharper tooling and careful machining parameters.

CF30 is not formulated for low-friction use. Bearing-grade PEEK is a better choice for sliding or rotating components.

Yes. Its low thermal expansion and high rigidity support tight tolerances, especially in temperature-variable environments.

Carbon reinforcement may reduce electrical insulation compared to unfilled PEEK. Electrical properties depend on the specific grade and should be verified against data sheets.

Moisture absorption remains low, similar to other PEEK grades, supporting dimensional stability in humid environments.

PEEK CF30 is supplied as extruded rods, plates, and tubular bars in standard sizes, with custom dimensions available on request.

Yes. CF30 maintains stiffness and dimensional stability at elevated temperatures suitable for demanding industrial applications.

PEEK CF30 has the lowest thermal expansion among standard PEEK grades, making it the preferred choice for precision components exposed to temperature changes.

Choose PEEK CF30 when dimensional stability and low thermal expansion are more important than impact resistance. CF30 is better suited for precision and high-temperature applications.

Yes. The high stiffness and low thermal expansion of CF30 make it ideal for parts that must maintain tight tolerances during operation and thermal cycling.

Carbon reinforcement can reduce electrical insulation compared to unfilled PEEK. Electrical behavior depends on the specific formulation and should be verified against the data sheet for critical applications.

CF30 maintains excellent dimensional stability and low creep under sustained load, particularly in high-temperature environments.

Yes. CF30 is commonly used as a metal replacement where stiffness, dimensional accuracy, and thermal stability are required, with the added benefits of reduced weight and corrosion resistance.

The highest rating is a result of the 40% reinforcement volume and the naturally rigid molecular structure of PPS. While PEEK CF30 is incredibly stiff, Impact-Modified PPS CF40 can reach a flexural modulus exceeding 22,000 MPa, making it the closest thermoplastic equivalent to a cast metal alloy in terms of resisting deflection.

PEEK CF30 is the superior choice for dynamic loads. While PPS CF40 is stiffer, it is more brittle. PEEK's semi-crystalline toughness provides better fatigue resistance, meaning it is less likely to develop micro-cracks under constant cyclic loading or sudden mechanical shock.

Yes, in many structural applications. While it has the lowest stiffness in this "high-tier" group, it is still vastly stronger than standard engineering plastics. It is ideal for lightweight structural frames, aerospace brackets, or electronics housings where dimensional precision is more important than maximum crushing load.

Carbon fiber is highly inert and does not degrade the chemical resistance of the base polymer. Impact-Modified PPS CF40 remains the "chemical champion," resisting almost all known solvents below 200°C. PEEK CF30 is nearly as robust, while Ultem CF15 remains sensitive to specific solvents like ketones or esters.

No. This is a critical distinction. Carbon fiber is conductive. All three of these grades are electrically conductive or static-dissipative (ESD). If your part must act as an electrical insulator, you must switch to a glass-filled (GF) or unfilled grade to avoid short circuits.

Impact-Modified PPS CF40 typically offers the lowest Coefficient of Linear Thermal Expansion (CLTE) due to its high fiber loading. However, PEEK CF30 is very close and is often used when those dimensions must be maintained at temperatures exceeding 200°C. Both materials expand at rates similar to aluminum.

Standard 40% carbon-filled PPS is extremely brittle; it can be difficult to machine without the edges "chipping out" or splintering. The Impact-Modified version adds a toughening agent to the matrix, allowing for cleaner machining of fine threads and ensuring the part doesn't shatter if dropped during assembly.

Yes, it is excellent for this. Carbon fiber is naturally lubricious and helps dissipate heat. Unlike glass-filled PEEK, which is abrasive and grinds away mating metal shafts, PEEK CF30 provides a low-friction surface that is ideal for high-speed bushings and wear rings.

Ultem CF15 often wins for precision. Because it is an amorphous resin, it does not suffer from the internal crystalline stresses that can cause PEEK or PPS to warp or "bow" when a significant amount of material is removed during the milling process.

Absolutely. Carbon fiber is highly abrasive and will dull standard carbide tools in minutes. For production runs of PEEK CF30 or PPS CF40, PCD (Polycrystalline Diamond) tooling is the industry standard to achieve clean fiber cuts and maintain the required tolerances.