PEEK 450CA30 stands as the original carbon fiber reinforced grade of polyetheretherketone, engineered specifically for applications demanding the highest strength and stiffness among ketone polymers. The "450" designation refers to the base PEEK polymer grade, while "CA30" indicates 30% carbon fiber reinforcement by weight. This configuration transforms PEEK from an excellent engineering plastic into a conductive, high-performance composite material suitable for aerospace, semiconductor, and medical device applications where electrostatic discharge (ESD) protection is critical.
• Carbon Fiber Content: 30% by weight • Tensile Strength: 260 MPa (37,700 psi) • Tensile Modulus: 24.8 GPa (3.6M psi) • Flexural Strength: 380 MPa • Heat Deflection Temperature: 336°C (637°F) • Density: 1.40 g/cm³ • Volume Resistivity: 10^5 ohm·cm (ESD safe range) • Thermal Conductivity: 0.95 W/m·K • Elongation at Break: 1.5% • Water Absorption: 0.30% • UL94 Flammability Rating: V-0 at 0.020 inch thickness [2][5]
The volume resistivity of 10^5 ohm·cm places PEEK 450CA30 squarely in the static dissipative range (10^5-10^12 Ω/sq), making it ideal for ESD-sensitive applications. Unlike unfilled PEEK, which is electrically insulative, the carbon fiber network creates conductive pathways that safely dissipate static charges. This property is non-negotiable for semiconductor wafer handling tools, electronics housing, and aerospace components where electrostatic discharge could damage sensitive equipment or ignite fuel vapors.
PEEK 450CA30 vs. Alternative Configurations: Neutral Comparison
| Configuration | Carbon Fiber % | Tensile Strength | Electrical Properties | Cost Range (per kg) | Best For |
|---|---|---|---|---|---|
| Unfilled PEEK | 0% | 100 MPa | Insulative (>10^15 Ω·cm) | $40-90 | Chemical resistance, non-conductive applications |
| PEEK GF30 (Glass Fiber) | 30% glass | 180 MPa | Insulative (>10^15 Ω·cm) | $40-80 | High strength, non-conductive structural parts |
| PEEK 450CA30 (Carbon Fiber) | 30% carbon | 260 MPa | ESD Safe (10^5 Ω·cm) | $60-150 | Conductive aerospace, semiconductor, ESD applications |
| PEEK FC30 (Wear Grade) | 10% CF + 10% graphite + 10% PTFE | 150 MPa | Conductive (<10^5 Ω·cm) | $70-120 | Bearings, seals, low friction sliding applications |
| PEEK Medical Grade | Variable | 200-240 MPa | Variable | $80-120+ | Implantable devices, surgical instruments, ISO 13485 required |
This comparison reveals a critical insight: PEEK 450CA30 is not universally superior. For applications requiring electrical insulation, unfilled PEEK or glass fiber grades are more appropriate and cost-effective. For high-wear bearing applications, the FC30 wear grade with PTFE offers superior friction performance despite lower strength. The 450CA30 configuration excels specifically in scenarios where conductivity, high strength, and thermal stability must coexist—such as semiconductor wafer handlers that must dissipate static while maintaining dimensional stability at elevated temperatures.

