PEEK+CF30 – Polyether Ether Ketone with 30% Carbon Fiber

🧩 PEEK+CF30 – Polyether Ether Ketone with 30% Carbon Fiber

PEEK+CF30 is an ultra-high performance, semi-crystalline composite reinforced with carbon fiber, capable of continuous operation at 250–280 °C without loss of strength. It offers an exceptional strength-to-weight ratio, high thermal conductivity, and dimensional stability comparable to metal. It is used in structural parts, pumps, valves, bearings, sensors, and components within the engine area.

🔹 What is PEEK+CF30 PEEK+CF30 (Polyether Ether Ketone + 30% Carbon Fiber) is an elite composite created by reinforcing pure PEEK with short carbon fibers. This results in a material that is:

2-3 times stiffer than pure PEEK,
much lighter than aluminum,
characterized by a very low coefficient of thermal expansion,
highly thermally conductive,
stable under load and vibration even at extreme temperatures.

🔧 Composition and Properties

Composition: 70% PEEK, 30% Carbon Fiber (CF).
Density: 1.41–1.44 g/cm³.
Melting Point: ≈ 343 °C.
Chemical Resistance: Exceptional.
Continuous Thermal Resistance: 250–280 °C.

🚗 Automotive Applications

Engine / Thermal: Sensor covers, pumps, valves, EGR parts (maximum rigidity, low weight).
Transmission / Braking: Bushings, bearings, spacers, gears (excellent friction and wear resistance).
Fuel / EGR Systems: Fittings, pressure valves (chemically inert, thermally conductive).
Electrical / Sensor Systems: Supports, ECU covers (good heat dissipation, electrical stability).

🔧 Welding Temperature and Methods

Hot Air: 380 – 400 °C (slow melting, controlled viscous flow).
Heat Plate: 370 – 390 °C (clean joint, no oxidation).
Manual Extrusion: 370 – 400 °C (compatible PEEK or PEEK+CF rod).

🔩 Welding Compatibility

✅ Excellent Compatibility: PEEK, PEEK+CF, PEEK+GF, PPS, PPSU, PES, PEI, PSU.
✅ Good Compatibility: PPS+CF, PPS+PEI, PPA.
❌ Incompatible: PP, PE, PS, ABS, PMMA, PVC, PET, PC.

💡 ReplastMD Recommendation: Use PEEK or PEEK+CF rod at 390 °C. Heat slowly to allow uniform melting of the matrix. Avoid overheating — carbon fiber can oxidize rapidly on the surface.