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Grade: Radel® R5000
Formula: PPSu
Form: Granule
Material: Polyphenylsulfone (PPSU, PPSF)
Commodity: Polymers
Color: Natural
Radel® R5000 PPSU Granules are a polyphenylsulfone thermoplastic offered in Goodfellow's range of engineering plastics. With 16 variations available, its granular form allows for excellent melt flow and moldability. This versatile material provides a balance of toughness, dimensional stability and heat and chemical resistance. Radel® R5000 PPSU Granules are commonly used for electrical components, aerospace and automotive parts, medical devices, and other applications demanding mechanical strength and temperature resistance up to 190°C.
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Material Properties for Polymers

Electrical Properties
Element Value
Dielectric constant @1kHz 3.45
Dissipation factor @ 1kHz 0.0009
Dissipation factor @ 1MHz 0.005
Dielectric strength( kV mm⁻¹ ) 14.1
Surface resistivity( Ohm/sq ) >10¹³
Volume resistivity( Ohmcm ) >10¹⁴
Physical Properties
Element Value
Flammability V-0
Limiting oxygen index( % ) 44
Water absorption( % ) 1.2
Water absorption - equilibrium( % ) 0.6
Water absorption - over 24 hours( % ) 0.35
Density( gcm⁻³ ) 1.29
Mechanical Properties
Element Value
Hardness - Rockwell M80/R122
Elongation at break( % ) 30
Compressive modulus( GPa ) 1.7
Tensile modulus( GPa ) 2.5
Izod impact strength( J m⁻¹ ) 700
Tensile strength( MPa ) 76
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 210
Heat-deflection temperature - 1.8MPa( C ) 200
Upper working temperature( C ) 180-210
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.35
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 55
Pultrusions
Element Value
Compressive strength( MPa ) 99

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