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Formula: PES
Form: Rod
Material: Polyethersulfone (PES)
Commodity: Polymers
PES Rods are available in 38 variations, with a choice of multiple diameters and lengths. Made from polyethersulfone, they offer excellent chemical resistance, thermal stability, and mechanical strength. PES rods are used across scientific research and industrial manufacturing applications requiring precision machined parts that can withstand high temperatures, stresses and harsh chemicals. Our range of PES rod options allows customers to select the optimal size and properties for their specific application needs.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Rod
Diameter +20% / -10%

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-Fair
Halogenated Hydrocarbons Good
Halogens Fair-Poor
Ketones Good
Electrical Properties
Element Value
Dielectric constant @1MHz 3.7
Dissipation factor @ 1MHz 0.003
Dielectric strength( kV mm⁻¹ ) 16
Volume resistivity( Ohmcm ) 10¹⁷
Physical Properties
Element Value
Flammability V-0 @ 0.4mm
Radiation resistance Good-Fair
Refractive index 1.65
Resistance to Ultra-violet Fair
Limiting oxygen index( % ) 34-41
Water absorption - equilibrium( % ) 2.2
Water absorption - over 24 hours( % ) 0.4-1
Density( gcm⁻³ ) 1.37
Mechanical Properties
Element Value
Hardness - Rockwell M88
Poisson's ratio 0.4
Elongation at break( % ) 40-80
Tensile modulus( GPa ) 2.4-2.6
Izod impact strength( J m⁻¹ ) 85
Abrasive resistance - ASTM D1044( mg/1000 cycles ) 6
Tensile strength( MPa ) 70-95
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 260
Heat-deflection temperature - 1.8MPa( C ) 203
Lower working temperature( C ) -110
Upper working temperature( C ) 180-220
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.13-0.18@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 55

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