PEEK Material Information
Specifications
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 1.3 – 1.44 g/cc | 0.047 – 0.052 lb/in³ | Average = 1.33 g/cc; Grade Count = 12 |
| Water Absorption | 0.06 – 0.5 % | 0.06 – 0.5 % | Average = 0.21%; Grade Count = 12 |
| Moisture Absorption at Equilibrium | 0.2 – 0.5 % | 0.2 – 0.5 % | Average = 0.46%; Grade Count = 7 |
| Moisture Vapor Transmission | 6.5 cc-mm/m²-24hr-atm | 16.5 cc-mil/100 in²-24hr-atm | Grade Count = 1 |
| Oxygen Transmission | 55 cc-mm/m²-24hr-atm | 140 cc-mil/100 in²-24hr-atm | Grade Count = 1 |
| Linear Mold Shrinkage | 0.003 – 0.014 cm/cm | 0.003 – 0.014 in/in | Average = 0.0079 cm/cm; Grade Count = 8 |
| Linear Mold Shrinkage, Transverse | 0.009 – 0.012 cm/cm | 0.009 – 0.012 in/in | Average = 0.011 cm/cm; Grade Count = 5 |
| Melt Flow | 4 – 49.5 g/10 min | 4 – 49.5 g/10 min | Average = 21.9 g/10 min; Grade Count = 5 |
| Spiral Flow | 7.6 – 22.7 cm | 2.99 – 8.94 in | Average = 13.8 cm; Grade Count = 4 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Rockwell M | 99 – 105 | 99 – 105 | Average = 100; Grade Count = 7 |
| Hardness, Rockwell R | 130 | 130 | Grade Count = 6 |
| Hardness, Shore D | 85 | 85 | Grade Count = 2 |
| Tensile Strength, Ultimate | 90 – 150 MPa | 13100 – 21800 psi | Average = 110 MPa; Grade Count = 8 |
| Tensile Strength, Yield | 90 – 110 MPa | 13100 – 16000 psi | Average = 98.8 MPa; Grade Count = 5 |
| Elongation at Break | 2.5 – 100 % | 2.5 – 100 % | Average = 36.7%; Grade Count = 12 |
| Elongation at Yield | 5 % | 5 % | Grade Count = 3 |
| Tensile Modulus | 3.1 – 8.3 GPa | 450 – 1200 ksi | Average = 4.5 GPa; Grade Count = 11 |
| Flexural Modulus | 3.8 – 9.1 GPa | 551 – 1320 ksi | Average = 4.8 GPa; Grade Count = 11 |
| Flexural Yield Strength | 110 – 210 MPa | 16000 – 30500 psi | Average = 170 MPa; Grade Count = 11 |
| Compressive Yield Strength | 29 – 150 MPa | 4210 – 21800 psi | Average = 120 MPa; Grade Count=10 |
| Poisson’s Ratio | 0.4 | 0.4 | Grade Count = 3 |
| Shear Modulus | 1.3 GPa | 189 ksi | Grade Count = 3 |
| Shear Strength | 52 – 80 MPa | 7540 – 11600 psi | Average = 57.7 MPa; Grade Count = 6 |
| Izod Impact, Notched | 0.53 – 1.1 J/cm | 0.993 – 2.06 ft-lb/in | Average = 0.7 J/cm; Grade Count = 10 |
| Izod Impact, Unnotched | 2.7 – 25.6 J/cm | 5.06 – 48 ft-lb/in | Average = 18.3 J/cm; Grade Count = 6 |
| Charpy Impact, Unnotched | NB | NB | Grade Count = 1 |
| Charpy Impact, Notched | 0.35 – 3.4 J/cm² | 1.67 – 16.2 ft-lb/in² | Average = 2.4 J/cm²; Grade Count = 3 |
| Compressive Modulus | 3.1 – 4.5 GPa | 450 – 653 ksi | Average = 3.7 GPa; Grade Count=3 |
| Coefficient of Friction | 0.11 – 0.4 | 0.11 – 0.4 | Average = 0.31; Grade Count=8 |
| K (wear) Factor | 235 – 250 | 235 – 250 | Average = 240; Grade Count = 3 |
| Limiting Pressure Velocity | 0.11 – 0.13 MPa-m/sec | 3140 – 3710 psi-ft/min | Average = 0.12 MPa-m/sec; Grade Count = 3 |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Electrical Resistivity | 1e+015 – 4.9e+016 ohm-cm | 1e+015 – 4.9e+016 ohm-cm | Average = 2E+16 ohm-cm; Grade Count = 9 |
| Surface Resistance | 1e+016 ohm | 1e+016 ohm | Grade Count = 1 |
| Dielectric Constant | 3.2 – 3.45 | 3.2 – 3.45 | Average = 3.3; Grade Count = 8 |
| Dielectric Constant, Low Frequency | 2.8 – 3.2 | 2.8 – 3.2 | Average = 2.9; Grade Count = 4 |
| Dielectric Strength | 15.7 – 24 kV/mm | 399 – 610 kV/in | Average = 18.7 kV/mm; Grade Count = 6 |
| Dissipation Factor | 0.002 – 0.004 | 0.002 – 0.004 | Average = 0.0035; Grade Count = 8 |
| Dissipation Factor, Low Frequency | 0.001 | 0.001 | Grade Count = 4 |
| Arc Resistance | 40 sec | 40 sec | Grade Count=2 |
| Comparative Tracking Index | 150 V | 150 V | Grade Count=4 |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear 20°C | 22 – 54 µm/m-°C | 12.2 – 30 µin/in-°F | Average = 44.1 µm/m-°C; Grade Count=12 |
| CTE, linear 100°C | 22 – 50 µm/m-°C | 12.2 – 27.8 µin/in-°F | Average = 39.2 µm/m-°C; Grade Count=6 |
| CTE, linear 250°C | 35 – 94 µm/m-°C | 19.4 – 52.2 µin/in-°F | Average = 70.4 µm/m-°C; Grade Count=5 |
| Heat Capacity | 1.85 – 2.16 J/g-°C | 0.442 – 0.516 BTU/lb-°F | Average = 2 J/g-K; Grade Count = 5 |
| Thermal Conductivity | 0.24 – 0.25 W/m-K | 1.67 – 1.74 BTU-in/hr-ft²-°F | Average = 0.25 W/m-K; Grade Count = 9 |
| Melting Point | 340 – 344 °C | 644 – 651 °F | Average = 340°C; Grade Count = 10 |
| Maximum Service Temperature, Air | 154 – 315 °C | 309 – 599 °F | Average = 260°C; Grade Count = 12 |
| Deflection Temperature at 1.8 MPa (264 psi) | 154 – 295 °C | 309 – 563 °F | Average = 180°C; Grade Count=12 |
| Brittleness Temperature | -65 °C | -85 °F | Grade Count=5 |
| Glass Temperature | 140 °C | 284 °F | Grade Count = 5 |
| UL RTI, Electrical | 260 °C | 500 °F | Grade Count = 3 |
| UL RTI, Mechanical with Impact | 180 °C | 356 °F | Grade Count = 4 |
| UL RTI, Mechanical without Impact | 240 °C | 464 °F | Grade Count = 4 |
| Flammability, UL94 | V-0 | V-0 | Grade Count = 11 |
| Oxygen Index | 35 – 43 % | 35 – 43 % | Average = 37.7%; Grade Count = 6 |
| Processing Properties | Metric | English | Comments |
|---|---|---|---|
| Processing Temperature | 360 – 370 °C | 680 – 698 °F | Average = 370°C; Grade Count = 6 |
| Rear Barrel Temperature | 340 – 350 °C | 644 – 662 °F | Average = 340°C; Grade Count = 5 |
| Middle Barrel Temperature | 360 – 370 °C | 680 – 698 °F | Average = 360°C; Grade Count = 5 |
| Front Barrel Temperature | 370 – 380 °C | 698 – 716 °F | Average = 370°C; Grade Count = 5 |
| Nozzle Temperature | 370 – 380 °C | 698 – 716 °F | Average = 370°C; Grade Count = 5 |
| Mold Temperature | 180 °C | 356 °F | Grade Count = 5 |
| Drying Temperature | 150 °C | 302 °F | Grade Count = 5 |
NOTE: The information in this data sheet is for design guidance only. Forming methods and specific geometry could affect properties.
Overview
PEEK is an abbreviation for PolyEtherEther-Ketone, a high performance engineering thermoplastic. PEEK material offers chemical and water resistance similar to PPS (PolyPhenylene Sulfide), but can operate at higher temperatures. It can be used continuously to 480°F (250°C) and endure exposure to hot water or steam with no distortion, corrosion or galling. For hostile environments, PEEK is a the performance material of choice to fluoropolymers. Carrying a V-0 flammability rating and exhibiting very low smoke and toxic gas emission when exposed to flame. It combines exceptional wear, chemical and moisture resistance with very high strength, dimensional stability and stiffness. Unreinforced PEEK (Unfilled) is general purpose grade and offers the highest elongation and toughness of all PEEK grades while being easily machined to precise tolerances.
Applications & Usage
- Insulator Rings
- Sliding and Wearing Parts
- Valve Seats
- Moving Clip Posts
- Wafer Carriers
- Manifolds
- Pump Wear Parts
- Electrical Connectors
- Gears
- Appliance parts such as bushings, bearings, seals and rings
- Food Contact Parts
Industries Using This Material
- Semiconductor
- Food
- Aerospace