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Vestakeep® 4000GF30 30% Glass Fiber Reinforced PEEK Granules

Grade: Vestakeep® 4000GF30
Formula: PEEK - 30% GFR
Form: Granule
Material: 30% Glass Fiber Reinforced PEEK
Commodity: Polymers
Nominal Granule Size: 6mm
Viscosity: High Viscosity
Vestakeep® 4000GF30 30% Glass Fiber Reinforced PEEK Granules are made from a high performance thermoplastic polymer. With 12 variations available, they offer a balance of mechanical performance, thermal resistance, chemical resistance and low flammability. These properties make them suitable for applications such as aerospace components, bearings, piston parts, pump impellers, valve seats and advanced composites.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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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
Electrical Properties
Element Value
Dielectric constant @1kHz 3.2-3.4
Dissipation factor @ 1MHz 0.002
Dielectric strength( kV mm⁻¹ ) 16.5-19.8
Physical Properties
Element Value
Flammability V-0
Radiation resistance Good
Resistance to Ultra-violet Fair
Limiting oxygen index( % ) 34-36
Water absorption - over 24 hours( % ) 0.06-0.12
Density( gcm⁻³ ) 1.49-1.54
Mechanical Properties
Element Value
Hardness - Rockwell M98-108
Poisson's ratio 0.39-0.41
Elongation at break( % ) 02-Mar
Compressive modulus( GPa ) 8.6-11
Tensile strength( MPa ) 155-197
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 306-356
Heat-deflection temperature - 1.8MPa( C ) 288-315
Lower working temperature( C ) -60
Upper working temperature( C ) 260-280
Specific heat( J K⁻¹ kg⁻¹ ) 1000-1100
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.197-0.213
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 20-30
Pultrusions
Element Value
Compressive strength( MPa ) 147-154

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