PEEK-GF30 Sheets
High-stiffness 30% Glass Fiber Reinforced PEEK (GF30) sheets engineered for high-temperature static loads and electrical insulation. Manufactured via continuous extrusion for superior density and thickness uniformity compared to press-molded plates. Features 260°C continuous thermal stability (300°C short-term peak), UL94 V-0 flame rating, and high gamma radiation resistance. Contact us for custom plate thicknesses and fast RFQs.
Product information
Published information supports preliminary product selection. Confirm the exact grade, dimensions, tolerances, documentation and application suitability with the quotation for your order.
Description
30% Glass Fiber Reinforced PEEK Sheets (GF30 Grade) are high-rigidity structural machining stock engineered for components operating under continuous high static mechanical loads and elevated thermal stress. By reinforcing high-purity PEEK resin with 30% premium glass fibers, this composite delivers significantly higher flexural strength, higher dimensional stability, and lower thermal expansion than unreinforced virgin PEEK.
Unlike traditional batch thermal-press molded plates, our GF30 PEEK sheets are produced via automated continuous extrusion, ensuring superior internal density, zero internal voiding, and precise cross-sectional thickness uniformity for high-speed CNC milling.
Mechanical & Thermal Property Benchmarks:
| Physical & Engineering Property | Nominal Value | Test Standard |
| Tensile Strength | 150 – 165 MPa | ISO 527 / ASTM D638 |
| Flexural Modulus | 9.5 – 10.5 GPa | ISO 178 / ASTM D790 |
| Heat Deflection Temp (HDT @ 1.8 MPa) | 315°C | ISO 75 / ASTM D648 |
| Continuous Service Temp (UL) | 260°C (Short-term peak 300°C) | UL 746B |
| Dielectric Strength | 18 – 22 kV/mm | IEC 60243 |
| Flammability Rating | UL94 V-0 (1.45mm) | Low smoke & toxicity |
| Radiation Resistance | 1000 Mrad (γ-radiation) | ISO 11137 |
Engineering Selection & Application Considerations:
• High Static Load & Structural Rigidity: Ideal for structural brackets, thermal isolators, and high-temperature manifolds where unreinforced PEEK would creep or deform under sustained mechanical pressure.
• Electrical & Radiation Immunity: Preserves exceptional dielectric breakdown strength across wide temperature and frequency ranges. Fully resistant to high-dose gamma radiation, making it suitable for nuclear and medical diagnostic equipment.
• Wear & Counter-Surface Note: Because embedded glass fibers can abrade soft metal mating surfaces, GF30 PEEK is recommended primarily for high static load-bearing parts rather than unlubricated high-speed sliding wear.
Target Component Manufacturing:
Engineered for precision CNC milling, routing, and drilling of:
• Electrical & Electronics: High-voltage insulator plates, terminal blocks, coil bobbins, connector housings, and circuit board testing fixtures.
• Chemical & Fluid Handling: High-pressure valve bodies, manifold blocks, pump housings, and corrosion-resistant seals exposed to harsh solvents and 250°C+ steam.
• Automotive & Industrial Machinery: Engine compartment thermal shields, sensor housings, oil-pump gears, and heavy-duty structural brackets.
Supply Formats & Technical RFQ:
• Plate Thicknesses: Available from 5mm to 100mm in full sheets (610x1000mm) or custom pre-cut billets.
• Quality Guarantees: Supplied with full Material Test Reports (MTR) and lot-traceable Certificates of Conformance (CoC).
• Machining Tip: Sharp carbide or PCD (Polycrystalline Diamond) CNC tooling is recommended due to glass fiber hardness.
Send us your STEP/DWG drawings or target dimensions for an immediate technical evaluation and commercial quotation within 12-24 hours.
Material overview
Understanding PEEK (Polyether Ether Ketone)
Why engineers use it
- Strong balance of heat, chemical and mechanical performance.
- Can be molded, extruded, machined or printed in suitable grades and equipment.
- Good fatigue and wear potential for demanding moving or loaded parts.
- Available in unfilled, glass-fiber, carbon-fiber and wear-modified grades.
- Suitable for precision components where long-term reliability justifies a specialty polymer.
Limits to consider
- High processing temperature requires capable equipment and controlled drying.
- Crystallinity, cooling and annealing can affect dimensions and performance.
- Reinforcement improves some properties but may reduce ductility or change machining behavior.
- Not every chemical, wear or medical application is covered by a standard industrial grade.
- PEEK can be unnecessary over-specification where PPS, PEI or another polymer meets the duty.
Grades and product forms
Unfilled PEEK provides the broad base-property balance. Glass-fiber grades generally target stiffness and dimensional control; carbon-fiber grades may add stiffness, strength and conductivity; bearing grades use fillers such as carbon, graphite or PTFE to tune friction and wear. Film, filament, powder, pellets and stock shapes each require different processing and purchasing information.
Performance points to review
| Evaluation area | Why it matters | Information to provide |
|---|---|---|
| Temperature behavior | Useful performance under elevated or changing temperature | Continuous and peak temperature, cycle length and time at load |
| Mechanical response | Strength and stiffness must match the real part geometry | Load direction, stress level, impact and fatigue expectations |
| Environmental resistance | Fluids, cleaning agents and atmosphere can change service life | Chemical name, concentration, temperature and exposure time |
| Dimensional control | Tight-tolerance parts depend on both material and processing | Finished dimensions, tolerances and assembly conditions |
| Electrical or insulation needs | Electrical requirements may influence grade and thickness | Voltage, dielectric, conductivity or insulation target |
These are engineering discussion points, not guaranteed property values. Final acceptance criteria should be agreed for the selected grade, process and order.
Typical application directions
These examples show where the material may be evaluated. They do not replace a suitability review for the finished component.
Fabrication and processing preparation
Share the finished part drawing as well as the requested rod diameter and length. This makes it possible to discuss machining allowance, tolerance, cut length, quantity and whether a closer starting size could reduce waste.
Where the application is critical, define what a successful trial looks like before material is ordered: dimensions after processing, visual condition, mechanical response, assembly fit or another measurable result.
When another material may be better
PPS, PEI, PSU/PPSU or a conventional engineering plastic may be more economical when temperature, chemical and mechanical requirements are moderate. PEEK is justified when several demanding requirements occur together or when service life and reliability outweigh raw-material cost.
We recommend sharing the current material and the reason it is being reconsidered. Cost, processability, supply form and inspection burden belong in the decision alongside technical performance.
Information needed for an accurate quotation
A useful RFQ reduces follow-up questions and helps us distinguish between a material request and a finished-part requirement.
| Product form | Raw material, stock shape, semi-finished blank or completed part |
|---|---|
| Dimensions | Nominal size, finished size and tolerances |
| Quantity | Trial quantity, first order and estimated annual demand |
| Application | Part function and current material, if any |
| Operating temperature | Continuous range, peak temperature and cycle duration |
| Environment | Chemicals, gases, moisture, pressure, vacuum or outdoor exposure |
| Mechanical duty | Load, speed, impact, wear and mating components |
| Documentation | Drawing revision, inspection, traceability or compliance needs |
Frequently asked questions
Can I request a sample or trial quantity?
Trial quantities can be discussed according to product form and availability. Tell us what you need to prove during the trial, the intended process and the expected production quantity if the test succeeds.
Do you provide a data sheet or material documentation?
Available documentation depends on the selected material and supply route. List the documents required by engineering, purchasing or quality when you inquire so they can be checked before quotation.
Can the grade be selected from a product name alone?
No. Similar product names can cover different grades, colors, fillers and processes. Selection should be based on the finished application, environment and required property balance.
Can you supply custom dimensions or finished parts?
Custom sizes, blanks or finished parts can be reviewed where appropriate. A drawing with tolerances, quantity and material requirement is the best basis for quotation.
How should we evaluate an alternative to our current material?
Share the current grade, the part’s service conditions and the reason for changing it. A useful comparison looks at failure mode, processing, life, inspection and total project cost—not only a single property value.
What determines lead time?
Lead time depends on product form, grade, size, quantity, documentation, machining and current availability. Confirm the required delivery date and destination with the RFQ rather than assuming a standard schedule.
Send the drawing, application and quantity. We will use the project details to prepare a practical material and supply discussion.
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