PEEK CF30

PEEK CF30 is the strongest and most rigid grade of PEEK, reinforced with 30% high-modulus carbon fibers. This high-performance polymer offers mechanical properties that rival many non-ferrous metals while being significantly lighter. It features the lowest thermal expansion coefficient in the PEEK family and superior wear resistance under high-load conditions. Jucheng Precision utilizes specialized diamond tooling and high-torque CNC machines to master the challenges of this abrasive material. We deliver mission-critical PEEK CF30 components for aerospace structural frames, oilfield wear parts, and automotive racing assemblies where failure is not an option.

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PEEK CF30

PEEK CF30 Machining Capabilities

Capability Technical Description Jucheng Advantage
Diamond Tooling (PCD) Carbon fiber is extremely abrasive. We utilize Polycrystalline Diamond (PCD) and specialized CVD diamond-coated tools to maintain edge sharpness. Ensures consistent dimensions and superior surface finish on large batches, preventing tool-wear induced tolerance drift.
High-Load 5-Axis Milling Machining the strongest PEEK variant into complex structural geometries with organic curves and undercuts. Our rigid 5-axis Haas/Mazak machines handle the high-stiffness CF30 without deflection, ensuring perfect alignment of gears and splines.
EMI/RFI Shielding Features Machining internal pockets and fine features in CF30 housings to utilize its inherent electrical conductivity for shielding. We provide precision-milled enclosures that offer built-in electromagnetic protection for sensitive aerospace electronics.
Precision Dimensional Control PEEK CF30 has the lowest thermal expansion coefficient of all PEEK grades. We hold tolerances to +/- 0.01mm. Perfect for components that must transition from cryogenic to high-heat environments without losing fitment or sealing.

Fabrication Guidelines for PEEK CF30

Abrasiveness Management:
The 30% carbon fiber reinforcement acts like a grinding wheel on standard tools. Tip: We use ultra-rigid tool holders and high-performance diamond coatings to ensure the material is cut, not torn.

Dust Management:
Carbon fiber machining produces conductive black dust that can damage electronics. Tip: We utilize high-efficiency wet-milling filtration systems to safely evacuate dust and maintain a clean-room style machining environment.

Brittle Behavior:
PEEK CF30 is more brittle than virgin PEEK. Tip: We use optimized exit strategies and specific ramp-in moves to prevent splintering or “chipping” on sharp external corners.

Orientation Strength:
Like all fiber-filled plastics, strength is highest in the direction of the fibers. Tip: We analyze the part’s stress direction and orient the stock material to maximize mechanical performance in the finished part.

Primary Applications

Aerospace Structures
Wing components, engine zone brackets, and high-load pulleys where PEEK CF30 replaces metal to save weight while increasing stiffness.

Oil & Gas Downhole
Centrifugal pump components, wear rings, and seals operating in high-pressure, abrasive slurry environments.

Semiconductor & Vacuum
Wafer handling components and structural supports requiring low outgassing and high rigidity under thermal cycling.

High-Performance Motorsport
Suspension bushings, gears, and engine covers where extreme heat resistance and strength-to-weight ratio are critical.

Properties

Density 1.38 - 1.42 g/cm³
Tensile Strength 190 - 210 MPa
Elastic Modulus 13 - 18 GPa
Hardness 90 Shore D
Heat Deflection Temp 315 °C
Continuous Service Temp 250 - 260 °C
Water Absorption 0.05%
Electrical Conductivity Conductive / Dissipative
Thermal Conductivity 0.95 W/m-K
Machinability Rating Low
Max Part Size 2000 x 800 x 600 mm