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Formula: PVDF
Form: Washer
Material: PVDF
CAS Number: 24937-79-9
Commodity: Polymers
Goodfellow offers PVDF Washer as part of its range of bolts. With 21 variations, these polyvinylidene fluoride washers provide an excellent combination of mechanical strength, chemical resistance, and thermal stability. The low coefficient of friction makes PVDF ideal for applications requiring smooth motion under load, such as bearings and bushings. The excellent resistance to weathering and UV radiation makes PVDF Washer suitable for outdoor use. Across the range, these washers meet critical needs in engineering components and industrial equipment.
Tolerances
Washer
| 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 |