High Performance Plastic · High Performance Thermoplastic
PEEK
PEEK is a high performance polymer — ultra-performance plastic. Typical values: 100 MPa yield, 1.32 g/cm³, rated to 250 °C. Available for CNC machining, Sheet metal, Injection molding, 3D printing at FabDigit.
Properties
Typical room-temperature values in the Virgin condition. Metric first, imperial in gray. The bars show where PEEK sits against the other 74 polymer grades in the catalog.
Datasheet
| Yield strength | 100 MPa15 ksi |
|---|---|
| Tensile strength | 110 MPa16 ksi |
| Hardness | 99 HRM |
| Density | 1.32 g/cm³0.048 lb/in³ |
| Specific strength (yield ÷ density) | 76 |
| Min service temp | -60 °C-76 °F |
| Max service temp | 250 °C482 °F |
| Electrical conductivity | < 0.001 % IACSinsulator |
| Machinability | Very good70 / 100 |
| Weldability | Very good70 / 100 |
| Formability | Poor20 / 100 |
| ISO 513 machining group | N |
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Against other polymer grades
Strength versus weight in the polymer family
Yield strength against density for every polymer grade FabDigit runs. PEEK is highlighted; hover a dot for its name, or open the interactive family chart.
Manufacturability
The process limits FabDigit's quote engine applies to PEEK. Design inside these and the part quotes instantly; outside them it routes to an engineer.
CNC machining
| Machinability | Better70 / 100 |
|---|---|
| ISO material group | N.8 |
| Cutting speed (rough / finish) | 250 / 310 m/min |
| Minimum wall | 0.8 mm |
| Minimum internal radius | 1 mm |
| Drill depth limit | 8× diameter |
| Best surface (machined / polished) | Ra 0.8 / 0.4 µm |
| Hardenable after machining | No |
Sheet metal
| Formability | Not Recommend20 / 100 |
|---|---|
| Weldability | Better70 / 100 |
Injection molding
| Mold shrinkage | 1.5 – 2.2 % |
|---|---|
| Wall thickness | 1 – 3.5 mm |
| Recommended draft | 1.5 ° |
| Pre-drying | 80 °C for 4 h |
| UV resistance | Fair |
3D printing
| Technologies | FDM |
|---|---|
| Layer height | 50 – 300 µmdefault 100 µm |
| Minimum wall / feature | 1 / 0.5 mm |
| Build envelope | 300 × 300 × 380 mm |
| Supports | Yes |
| Anisotropy | Moderate |
Conditions and tempers
How PEEK is supplied and what each state is for. The default is what FabDigit quotes unless your drawing says otherwise.
| Condition | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
VirginDefault Grade Modifier | No recycled content — traceable, critical parts | — | — | — | — |
UnfilledDefault Grade Modifier | Tougher and cheaper than filled — snap fits, housings, wear parts | — | — | — | — |
CF10 10% Carbon Fiber (CF10) | Stiffer than glass at the same weight — light structural parts | — | — | — | — |
PTFE 10% Additive | Acetal with lower friction — light-duty slides | — | — | — | — |
Bearing Grade Grade Modifier | Built-in lubricant — bushings that run without grease | — | — | — | — |
GF30 30% Glass Fiber (GF30) | The structural default — mounts, housings, gears under sustained load | — | — | — | — |
CF30 30% Carbon Fiber (CF30) | Stiffest, lightest option; bleeds static — precision fixtures | — | — | — | — |
FDA Cert | Required for food-contact surfaces | — | — | — | — |
Heat treatment and post-processing
Operations FabDigit's suppliers routinely run on PEEK, ranked by how often they make sense for this grade.
Post-processing
| Manual Deburr | Deburrstandard |
|---|---|
| Edge Break (0.5mm) | Deburr |
| Heat-Stake Insert | Assembly |
| Ultrasonic Insert | Assembly |
| Laser Engrave | Marking |
| Press-fit Insert | Assembly |
| Silk Screen | Marking |
| CMM Inspection | Inspection |
| FAI Report | Inspection |
| Individual Bag | Packaging |
Surface finishes for PEEK
Coatings and treatments compatible with polymer on the processes PEEK runs on. Pick them in the quote configurator or call them out on the drawing.
Coating
- Clear Coating
- Conductive Coating
- EMI Shielding Coating
- Primer Coating
- Soft Touch Coating
- Tinted Coating
- UV Coating
- Waterproof Coating
Injection Molding Coating
- EMI Shielding Coating
- Soft Touch Coating
- Spray Painting
- UV Coating
Organic Coating
- Painting
Marking / Decoration
- Chemical Etching
- Dot Peen Marking
- Electro-chemical Etching
- Embossing / Debossing
- Hot Stamping
- In-Mold Labeling (IML)
- Ink Stamping
- Laser Marking
- Mechanical Engraving
- Pad Printing
- Vibro Engraving / Scribing
Metallization / Functional
- Chrome Plating (Plastic)
- Vacuum Metallization
Coloring
- Dyeing (Nylon)
- Painting
Equivalent designations
Standards and trade names that resolve to PEEK in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- APTIVKetaSpireTECAPEEKVictrexVICTREX PEEK
- Also called
- Poly-Ether-Ether-KetonePolyetheretherketone
- Other
- Victrex 450G
Stock forms
Raw-material forms FabDigit sources PEEK in.
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.