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Formula: PVDF
Form: Disk
Material: Polyvinylidene fluoride (PVDF)
CAS Number: 24937-79-9
Commodity: Polymers
The PVDF Disk is a fluoropolymer product within Goodfellow's extensive range of plastic disks. With 48 sizes available, they offer excellent chemical resistance as well as good mechanical strength and low friction properties. PVDF disks are used in chemical processing equipment as valve seats and bearings. They are also ideal as electrical insulators and chemical-resistant liners in the chemical and pharmaceutical industries.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Disk
Thickness ±20%

Material Properties for Polymers

Chemical Resistance
Element Value
Acids - concentrated Good
Acids - dilute Good
Alcohols Good
Alkalis Fair
Aromatic hydrocarbons Good
Greases and Oils Good
Halogenated Hydrocarbons Good-Fair
Halogens Good-Poor
Mechanical Properties
Element Value
Coefficient of friction 0.2-0.4
Hardness - Rockwell R77-83
Poisson's ratio 0.34
Elongation at break( % ) 50
Tensile modulus( GPa ) 01-Mar
Izod impact strength( J m⁻¹ ) 120-320
Abrasive resistance - ASTM D1044( mg/1000 cycles ) 24
Tensile strength( MPa ) 25-60
Electrical Properties
Element Value
Dielectric constant @1MHz 8.4
Dissipation factor @ 1kHz 0.06
Dielectric strength( kV mm⁻¹ ) 13
Surface resistivity( Ohm/sq ) 10¹³
Volume resistivity( Ohmcm ) 10¹⁴
Physical Properties
Element Value
Flammability V0
Radiation resistance Fair
Refractive index 1.42
Resistance to Ultra-violet Excellent
Limiting oxygen index( % ) 44
Water absorption - over 24 hours( % ) 0.04
Density( gcm⁻³ ) 1.76
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 120-150
Heat-deflection temperature - 1.8MPa( C ) 80-115
Lower working temperature( C ) -40
Upper working temperature( C ) 135-150
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.1-0.25@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 80-140

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