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PEEK Disc

The PEEK Disc is one of Goodfellow's wide range of plastic discs and sections. Made from polyetheretherketone, a high-performance thermoplastic, it exhibits excellent mechanical and chemical resistance properties. With 30 size variations available, Goodfellow's PEEK discs find use in demanding applications, including semiconductor wafer handling and testing equipment, liquid chromatography systems, and medical devices. The exceptional stiffness, strength and temperature resistance of PEEK make it an ideal material for precision discs and spacers.
Thickness: 0.125mm
Diameter: 12.7mm
Technical Name: Polyetheretherketone
Formula: PEEK
Density: 1.29g/cm³
CAS Number: 29658-26-2
Structure: Amorphous
Transparency: Transparent Pale Amber
UOM Code: 223-510-68
SKU: 1000075105
Product Code: EK30-FM-000225

Tolerances

Disc
Thickness ±20%
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Tolerances

Disc
Thickness ±20%
Technical Data Sheet
Safety Data Sheet

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Material Properties for Polymers

Chemical Resistance
Element Value
Acids - concentrated Good-Poor
Acids - dilute Good
Alcohols Good
Alkalis Good
Aromatic hydrocarbons Good
Greases and Oils Good
Halogenated Hydrocarbons Good
Halogens Good-Poor
Ketones Good-Poor
Mechanical Properties
Element Value
Coefficient of friction 0.18
Hardness - Rockwell M99
Poisson's ratio 0.4
Elongation at break( % ) 50
Tensile modulus( GPa ) 3.7-4
Izod impact strength( J m⁻¹ ) 85
Tensile strength( MPa ) 70-100
Electrical Properties
Element Value
Dielectric constant @1kHz 3.2-3.3@50Hz-10Khz
Dissipation factor @ 1MHz 0.003
Dielectric strength( kV mm⁻¹ ) 190@50µm
Volume resistivity( Ohmcm ) 10¹⁵-10¹⁶
Physical Properties
Element Value
Flammability V-0 @ 1.5mm
Radiation resistance Good
Resistance to Ultra-violet Fair
Limiting oxygen index( % ) 35
Water absorption - equilibrium( % ) 0.5
Water absorption - over 24 hours( % ) 0.1-0.3
Density( gcm⁻³ ) 1.26-1.32
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 260
Heat-deflection temperature - 1.8MPa( C ) 160
Upper working temperature( C ) 250
Specific heat( J K⁻¹ kg⁻¹ ) 1340
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.25@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 47-108
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