As a specialized natural PEEK rod manufacturer, we extrude high-purity polyetheretherketone stock shapes that maintain stable mechanical properties under aggressive thermal and chemical conditions. Our catalog includes a natural PEEK rod for medical implant grade with documented biocompatibility and radiolucency, which supports orthopedic, spinal, and dental device machining. The virgin PEEK round bar option offers an unreinforced, contaminant-free resin base for tight-tolerance parts that cannot tolerate fillers or additives. For applications requiring sustained dielectric strength and thermal endurance, our PEEK rod high temperature insulation series is rated for continuous service above 250°C in electrical connectors, coil forms, and downhole tools. Engineers working on weight-critical structures frequently select the PEEK rod for aerospace structural part because it delivers a high strength-to-weight ratio, low smoke emission, and excellent resistance to aviation fluids.
The natural PEEK rod produced in our facility starts with certified virgin resin and is processed through a controlled melt extrusion line, followed by multi-stage annealing to reduce residual stress and improve machinability. Each diameter is centerless ground or precision turned to meet tight ovality and straightness tolerances, which helps minimize scrap during CNC machining. In-house quality control includes ultrasonic scanning, melt flow index measurement, and tensile testing per ASTM D638 or ISO 527. For regulated industries, we provide full material certifications, lot traceability, and RoHS/REACH declarations on request. Common applications include semiconductor wafer handling, oil and gas seals, valve seats, high-performance bearings, and medical instrument components. The rod is also suitable for repeated autoclave sterilization and gamma irradiation, making it a practical choice for medical device prototyping and production. The product parameters below summarize typical values for standard natural PEEK rod stock.
| Property | Test Method | Typical Value |
|---|---|---|
| Tensile strength at break | ISO 527 | 100 MPa |
| Tensile modulus | ISO 527 | 4.0 GPa |
| Flexural strength | ISO 178 | 170 MPa |
| Flexural modulus | ISO 178 | 4.1 GPa |
| Compressive strength | ISO 604 | 125 MPa |
| Notched Izod impact | ISO 180/A | 6.5 kJ/m² |
| Density | ISO 1183 | 1.32 g/cm³ |
| Glass transition temperature (Tg) | DSC | 143 °C |
| Melting temperature (Tm) | DSC | 343 °C |
| Continuous service temperature | UL 746B | 250 °C |
| Thermal conductivity | ASTM C177 | 0.25 W/(m·K) |
| Dielectric strength | IEC 60243 | 19 kV/mm |
| Volume resistivity | IEC 60093 | 10^15 Ω·cm |
| Water absorption (24 h) | ISO 62 | 0.5% |
| Diameter (mm) | Tolerance (mm) | Ovality (mm) |
|---|---|---|
| 6 – 25 | ±0.05 | ≤0.03 |
| 25 – 50 | ±0.08 | ≤0.05 |
| 50 – 100 | ±0.10 | ≤0.08 |
| 100 – 150 | ±0.15 | ≤0.10 |