PEEK-450G
also 450G
PEEK-450G is the de-facto industry reference designation for standard unfilled, medium-viscosity polyaryletherketone, used as the baseline resin for extrusion, injection moulding and machining stock.
Reference datasheet — PEEK-450G 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.
PEEK-450G grades and fills
PEEK-450G is supplied in 5 conditions, soft to hard.
Compare all 5 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
ESD / static-dissipative | Use for wafer handling, chip trays and fuel-contact parts needing controlled surface resistivity. | 90 | 90 | 10 | 86 Shore D |
450G Black | Same mechanical set as natural 450G but with markedly better UV/weathering and light-blocking behaviour. | 100 | 100 | 40 | 85 Shore D |
450FC30 | Choose for unlubricated bushings, seals, thrust washers and high-PV sliding contact. | 130 | 2.5 | ||
450GL30 | Pick for maximum stiffness, creep resistance and dimensional stability above Tg while keeping electrical insulation. | 165 | 2.5 | 102 HRM | |
450CA30 | Highest strength/stiffness and best thermal conduction and wear; use where static-dissipative behaviour is acceptable or desired. | 224 | 1.8 | 105 HRM |
Supply forms, finishes and certifications
Ways PEEK-450G is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
MED | Medical / implantable grade | Certification |
NATDefault | 450G | Standard supply |
What is PEEK-450G?
PEEK-450G is the de-facto industry reference designation for standard unfilled, medium-viscosity polyaryletherketone, used as the baseline resin for extrusion, injection moulding and machining stock. Engineers choose it for 250 °C continuous service, hydrolysis and chemical resistance, and good toughness at 100 MPa tensile strength with 45% elongation; it is stocked as rod, plate, tube, film and pellets. Resin cost is high, processing needs 360–400 °C melt temperatures and all-metal barrels, and unpigmented parts yellow under UV. Filled variants such as GF30, CF30 and FC30 cover higher stiffness or bearing duty. PEEK-450G has a density of 1.3 g/cm³ (0.047 lb/in³), heavier than 69% of polymer grades. Its glass-transition temperature is 143°C (289 °F). PEEK-450G has a yield strength of 100 MPa (14.5 ksi) and a tensile strength of 100 MPa (14.5 ksi) — stronger than 95% of polymer grades. Elongation at break is 45% and the elastic modulus is 3.8 GPa (0.551 Msi).
What is PEEK-450G used for?
- stock rod/plate/tube
- general machined components
- semiconductor parts
- chemical process components
Advantages
- Tough — resists crack growth — 6.5 MPa·√m (5.92 ksi·√in), better than 100% of polymer grades
- High strength — 100 MPa (14.5 ksi), better than 95% of polymer grades
- High service temperature — 250°C (482 °F), better than 94% of polymer grades
- Good corrosion resistance — 92/100, better than 91% of polymer grades
- Stiff — 3.8 GPa (0.551 Msi), better than 85% of polymer grades
Limitations
- High embodied carbon — 16 kg CO₂/kg, worse than 98% of polymer grades
PEEK-450G properties
Typical room-temperature values; bars are the position among polymer grades.
Physical6
PEEK-450G has a density of 1.3 g/cm³ (0.047 lb/in³), heavier than 69% of polymer grades. Its glass-transition temperature is 143°C (289 °F).
Mechanical17
PEEK-450G has a yield strength of 100 MPa (14.5 ksi) and a tensile strength of 100 MPa (14.5 ksi) — stronger than 95% of polymer grades. Elongation at break is 45% and the elastic modulus is 3.8 GPa (0.551 Msi).
Thermal10
PEEK-450G is rated for continuous service to 250°C (482 °F). It conducts heat at 0.25 W/m·K (0.144 BTU/hr·ft·°F), better than 72% of polymer grades. Thermal expansion is 47 µm/m·K (26.1 µin/in·°F).
Electrical7
PEEK-450G is an electrical insulator with a dielectric strength of 20 kV/mm (508 V/mil) and a resistivity of 1×10¹⁴ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 91% of polymer grades. UV resistance is fair.
Sustainability4
Producing a kilogram of PEEK-450G takes about 290 MJ of energy and emits 16 kg of CO₂ — more than 95% of polymer grades. Typical recycled content is 0%.
Manufacturability8
PEEK-450G's machinability is very good (70/100, better than 74% of polymer grades); weldability good (55/100); formability fair (35/100).
Common Calculations5
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-450G is highlighted; hover a dot for its name, or open the interactive family chart.
Working with PEEK-450G
Is PEEK-450G easy to machine?
Machines like a tough engineering plastic: sharp carbide/PCD tools, high speed with light feeds, generous coolant/air to avoid heat build-up; stress-relieve (annealing 200–250 °C) before finish cuts on thick stock.
Can PEEK-450G be welded?
Joinable by ultrasonic, laser, IR/hot-plate and spin welding as well as fusion bonding of composites; solvent bonding is not possible, so adhesives require plasma or abrasive surface activation.
Can PEEK-450G be formed, bent or molded?
Dry to <0.02 % moisture (150 °C, 3 h) and inject at 360–400 °C melt with a 175–205 °C mold to develop full crystallinity; hot-runner and all-metal barrels needed, and low mold temperature gives amorphous, brittle, dimensionally unstable parts.
PEEK-450G 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.
| Element | Spec limit (wt %) |
|---|---|
| glass fiber0 in 450G; 20–30 wt% in GL20/GL30 variants | ≈ 0 |
| carbon fiber0 in 450G; 20–30 wt% in CA20/CA30 variants | ≈ 0 |
| PTFE + graphite0 in 450G; ~10+10 wt% in FC30 bearing grade | ≈ 0 |
| poly(oxy-1,4-phenylene-oxy-1,4-phenyleneunfilled, unpigmented base resin; semi-crystalline, ~30–35% crystallinity when properly molded | balance |
What surface finishes work on PEEK-450G?
Takes fine machined or polished surfaces; can be plasma-treated, laser-marked or metallized, but has no anodize/plate analogue and unpigmented parts yellow under UV exposure.
Equivalent designations
Standards and trade names that resolve to PEEK-450G in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- 450G
How much does PEEK-450G cost?
PEEK-450G 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-450G — frequently asked
What is PEEK-450G used for?
PEEK-450G is typically used for stock rod/plate/tube, general machined components, semiconductor parts and chemical process components. In short: baseline unfilled PEEK; toughest PEEK variant; widest stock availability.
What is the yield strength of PEEK-450G?
PEEK-450G has a typical yield strength of 100 MPa (14.5 ksi) and a tensile strength of 100 MPa (14.5 ksi) — stronger than 95% of polymer grades. Strength varies by condition: see the 5 listed tempers.
Is PEEK-450G easy to machine?
Yes — machinability is rated very good (70/100, better than 74% of polymer grades). Machines like a tough engineering plastic: sharp carbide/PCD tools, high speed with light feeds, generous coolant/air to avoid heat build-up; stress-relieve (annealing 200–250 °C) before finish cuts on thick stock.
Can PEEK-450G be welded?
Yes — weldability is rated good (55/100). Joinable by ultrasonic, laser, IR/hot-plate and spin welding as well as fusion bonding of composites; solvent bonding is not possible, so adhesives require plasma or abrasive surface activation.
What surface finishes work on PEEK-450G?
Takes fine machined or polished surfaces; can be plasma-treated, laser-marked or metallized, but has no anodize/plate analogue and unpigmented parts yellow under UV exposure.
Can PEEK-450G be formed, bent or molded?
Dry to <0.02 % moisture (150 °C, 3 h) and inject at 360–400 °C melt with a 175–205 °C mold to develop full crystallinity; hot-runner and all-metal barrels needed, and low mold temperature gives amorphous, brittle, dimensionally unstable parts.
What is the maximum service temperature of PEEK-450G?
PEEK-450G is rated for continuous use to about 250°C (482 °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-450G cost?
PEEK-450G 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 450G product datasheet — Victrex plc (2023)
- TECAPEEK natural / GF30 / CF30 stock shape data — Ensinger GmbH (2023)
- CAMPUS plastics single-point data, PAEK/PEEK — CAMPUS / CWFG (2024)
- ISO 10350-1 / ISO 527 / ISO 178 / ISO 75 acquisition of single-point data — ISO (2017)
- Engineering Plastics, Engineered Materials Handbook Vol. 2 — 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.