PEEK-GF30
PEEK-GF30 is polyetheretherketone reinforced with 30% short glass fiber, giving 165 MPa tensile strength, 2.5% elongation and a 260 °C service temperature.
Reference datasheet — PEEK-GF30 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the IM condition
PEEK-GF30 grades and fills
PEEK-GF30 is supplied in 4 conditions, soft to hard. IM is the default FabDigit quotes; the values on this page are for it.
Compare all 4 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
GF30 + PTFE/graphite lubricated bearing compound | Choose the PTFE/graphite-lubricated compound for plain bearings, seal rings and wear bushings needing low friction and wear rate; tensile falls to 125 MPa and service temperature to 250 °C. | 125 | 2 | 85 Shore D | |
High-flow / low-viscosity GF30 grade for thin walls and long flow paths | Pick the high-flow, low-viscosity variant when thin-wall connectors and small precision parts are hard to fill; flow improves but impact and weld-line strength are slightly lower. | 155 | 2 | 87 Shore D | |
Black / heat- and UV-stabilised GF30 pigmented compound | Pick the carbon-black pigmented, heat- and UV-stabilised compound for outdoor, engine-bay or light-blocking parts where appearance must stay consistent; carbon black improves UV resistance. | 160 | 2.4 | 88 Shore D | |
IMDefault Standard injection-moulding grade | Default choice: use the general-purpose injection-moulding grade for stiff, heat-resistant structural parts and pump/valve components serving continuously to 260 °C. | 165 | 2.5 | 88 Shore D |
Supply forms, finishes and certifications
Ways PEEK-GF30 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
EX | Extruded / compression-moulded stock shape | Surface finish |
FDA | FDA/MED | Certification |
What is PEEK-GF30?
PEEK-GF30 is polyetheretherketone reinforced with 30% short glass fiber, giving 165 MPa tensile strength, 2.5% elongation and a 260 °C service temperature. It is selected over unfilled PEEK for stiffness, creep resistance and dimensional stability in hot, loaded parts, and is available as injection, extrusion, high-flow, FDA, GF30-PTFE and black heat-stabilized conditions in stock shapes and moulded components. The costs are low ductility, a rougher surface, abrasive wear on tooling (machinability score 45) and anisotropic shrinkage. Unfilled PEEK is the alternative where toughness, surface finish or a cleaner machined edge matters more. PEEK-GF30 has a density of 1.51 g/cm³ (0.0546 lb/in³), heavier than 88% of polymer grades. Its glass-transition temperature is 143°C (289 °F). PEEK-GF30 has a tensile strength of 165 MPa (23.9 ksi), stronger than 97% of polymer grades. Elongation at break is 2.5% and the elastic modulus is 10 GPa (1.45 Msi).
What is PEEK-GF30 used for?
- structural aerospace brackets
- semiconductor process components
- precision gears
- electrical insulators under load
Advantages
- Tough — resists crack growth — 5 MPa·√m (4.55 ksi·√in), better than 98% of polymer grades
- High service temperature — 260°C (500 °F), better than 97% of polymer grades
- Conducts heat well — 0.43 W/m·K (0.248 BTU/hr·ft·°F), better than 96% of polymer grades
- Stiff — 10 GPa (1.45 Msi), better than 95% of polymer grades
- Good corrosion resistance — 93/100, better than 95% of polymer grades
Limitations
- High embodied carbon — 13 kg CO₂/kg, worse than 93% of polymer grades
- Limited ductility — 2.5%, worse than 89% of polymer grades
- Heavy — 1.51 g/cm³ (0.0546 lb/in³), worse than 88% of polymer grades
- Limited formability — 10/100, worse than 87% of polymer grades
- Hard to polish — 30/100, worse than 82% of polymer grades
PEEK-GF30 properties
Typical room-temperature values for PEEK-GF30-IM; bars are the position among polymer grades.
Physical5
PEEK-GF30 has a density of 1.51 g/cm³ (0.0546 lb/in³), heavier than 88% of polymer grades. Its glass-transition temperature is 143°C (289 °F).
Mechanical14
PEEK-GF30 has a tensile strength of 165 MPa (23.9 ksi), stronger than 97% of polymer grades. Elongation at break is 2.5% and the elastic modulus is 10 GPa (1.45 Msi).
Thermal11
PEEK-GF30 is rated for continuous service to 260°C (500 °F). It conducts heat at 0.43 W/m·K (0.248 BTU/hr·ft·°F), better than 96% of polymer grades. Thermal expansion is 20 µm/m·K (11.1 µin/in·°F).
Electrical7
PEEK-GF30 is an electrical insulator with a dielectric strength of 19 kV/mm (482.6 V/mil) and a resistivity of 1×10¹⁴ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (93/100), better than 95% of polymer grades. UV resistance is fair.
Sustainability4
Producing a kilogram of PEEK-GF30 takes about 260 MJ of energy and emits 13 kg of CO₂ — more than 94% of polymer grades. Typical recycled content is 0%.
Manufacturability8
PEEK-GF30's machinability is fair (45/100, worse than 78% of polymer grades); weldability fair (35/100); formability not recommended (10/100).
Common Calculations4
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the polymer family
Yield strength against density for every polymer grade FabDigit runs. PEEK-GF30 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with PEEK-GF30
Is PEEK-GF30 easy to machine?
Turns, mills and drills dry, but the glass fiber is highly abrasive — use PCD or coated carbide tooling with sharp rake angles, high speed and low feed. Internal stress causes post-machining distortion; annealing at 200 °C is recommended.
Can PEEK-GF30 be welded?
Not solvent bondable. Ultrasonic, infrared, laser and hot-plate welding are possible, but knit lines and welds are markedly weaker than the base material because of fiber orientation, so use threaded fasteners or inserts for load-bearing joints.
Can PEEK-GF30 be formed, bent or molded?
Injection mould with a barrel around 380 °C and a tool at 180–200 °C to develop crystallinity. Dry at least 3 h at 150 °C to below 0.02% moisture, use large gates and runners to limit fiber breakage, and compensate anisotropic shrinkage in the tool.
PEEK-GF30 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| glass fiberchopped E-glass, usually silane-coupling-agent sized | 28 – 32 | 30 |
| pigment / process additivescolorant, nucleating or release additives (grade-dependent) | 0 – 1 | 0.3 |
| polyetheretherketone (PEEK) resinsemi-crystalline aromatic polyaryletherketone matrix | ≥ 68 (balance) |
What surface finishes work on PEEK-GF30?
Natural colour is light brown to grey-white, and the surface is rough where glass fiber is exposed. Blasting and plasma treatment improve coating adhesion; direct plating is not possible and polishing gives limited improvement.
How much does PEEK-GF30 cost?
PEEK-GF30 is a high-cost polymer ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
PEEK-GF30 — frequently asked
What is PEEK-GF30 used for?
PEEK-GF30 is typically used for structural aerospace brackets, semiconductor process components, precision gears and electrical insulators under load. In short: stiffest common PEEK grade; 260 °C structural polymer; abrasive to tooling.
What is the tensile strength of PEEK-GF30?
PEEK-GF30 has a typical tensile strength of 165 MPa (23.9 ksi) — stronger than 97% of polymer grades. Strength varies by condition: see the 4 listed tempers.
Is PEEK-GF30 easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 78% of polymer grades). Turns, mills and drills dry, but the glass fiber is highly abrasive — use PCD or coated carbide tooling with sharp rake angles, high speed and low feed. Internal stress causes post-machining distortion; annealing at 200 °C is recommended.
Can PEEK-GF30 be welded?
With care — weldability is rated fair (35/100). Not solvent bondable. Ultrasonic, infrared, laser and hot-plate welding are possible, but knit lines and welds are markedly weaker than the base material because of fiber orientation, so use threaded fasteners or inserts for load-bearing joints.
What surface finishes work on PEEK-GF30?
Natural colour is light brown to grey-white, and the surface is rough where glass fiber is exposed. Blasting and plasma treatment improve coating adhesion; direct plating is not possible and polishing gives limited improvement.
Can PEEK-GF30 be formed, bent or molded?
Injection mould with a barrel around 380 °C and a tool at 180–200 °C to develop crystallinity. Dry at least 3 h at 150 °C to below 0.02% moisture, use large gates and runners to limit fiber breakage, and compensate anisotropic shrinkage in the tool.
What is the maximum service temperature of PEEK-GF30?
PEEK-GF30 is rated for continuous use to about 260°C (500 °F), and briefly to 310°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does PEEK-GF30 cost?
PEEK-GF30 is a high-cost polymer ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- VICTREX PEEK 450GL30 Product Data Sheet — Victrex plc (2023)
- TECAPEEK GF30 natural — stock shape datasheet — Ensinger GmbH (2023)
- CAMPUS plastics database — PEEK GF30 injection moulding grades (ISO 10350) — CWFG / CAMPUS (2024)
- ISO 527-2 / ISO 178 / ISO 75-1 test methods for rigid plastics — ISO (2019)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.