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Grade: Radel® R5000
Formula: PPSu
Form: Granule
Material: Polyphenylsulfone (PPSU, PPSF)
Commodity: Polymers
Color: Natural

Radel® R-5000 PPSU Granules

Radel® R 5000 PPSU Granules are a go‑to resin for parts that face heat, hot water, and aggressive cleaners without clouding, embrittlement, or stress cracking. The polymer’s backbone resists hydrolysis and surface damage, so components keep their clarity and fit through repeated service. Medical and laboratory teams choose it for reusable housings, manifolds, and fluid‑path elements that must be sterilized again and again. Aerospace and transportation value its stability for lightweight covers, pump and valve parts, and insulating structures near warm zones. The resin molds cleanly into thin‑wall features, threads, and snap fits, holding details that speed assembly and reduce secondary work. It also supports transparent or tinted designs that allow visual checks in service. For research and production, PPSU offers a dependable combination of toughness, processability, and wet‑service endurance that helps reduce maintenance and extend product life in demanding environments.
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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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