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Formula: PVDF
Form: Bolt
Material: Polyvinylidene fluoride (PVDF)
CAS Number: 24937-79-9
Commodity: Polymers

PVDF Cross Recessed Pan Head Bolt

PVDF Cross Recessed Pan Head Bolt provides exceptional chemical resistance, thermal stability, and mechanical durability in a precision-engineered fastening form. Polyvinylidene fluoride offers strong resistance to acids, bases, solvents, and oxidizing environments, while its piezoelectric and ferroelectric properties open unique uses in advanced engineering. These bolts are widely applied in chemical processing, electronics, and biomedical industries where inert, corrosion-resistant fasteners are essential. Specific uses include secure assembly of fluid handling systems, fastening components in cleanroom equipment, and supporting sensitive electronic housings exposed to corrosive media. In research, PVDF bolts enable studies of mechanical-electrical coupling, material behavior in corrosive testing, and prototype device assembly. The cross recessed pan head design allows controlled torque application while maintaining mechanical strength and insulating capability. Their combination of functional resilience and electroactive potential makes PVDF bolts indispensable for next-generation industrial systems and scientific investigations.
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Tolerances

Bolt
Size See Item

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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