PVDF

PolyVinylidene Fluoride

Properties

PVDF is the acronym for PolyVinylidene Fluoride which is an opaque semi-crystalline fluorocarbon, classified by the Underwriters Laboratories of the USA in the Self Extinguishing Group 1 Category. PVDF possesses very good electrical, mechanical and thermal properties combined with excellent chemical resistance.

The general PVDF properties are expanded as follows:

  • Will operate continuously at 150°C
  • High Radiation resistance(superior to other fluoropolymers)
  • Outstanding UV resistance
  • Excellent Chemical resistance
  • Excellent Hydrolysis resistance
  • Very good dimensional stability
  • Good creep resistance
  • Good wear resistance
  • Good sliding properties
  • Good electrical insulating properties
  • Good mechanical strength
  • Good stiffness
  • Good weather resistance
  • Low flammability
  • Approved for food use
  • Retains its properties under High Vacuum
  • Retains its properties under Gamma Radiation
  • High purity material

This product is available in sheet and rod form.

Applications

The applications for this product are many and varied due to its versatile  range of properties and to date has been used in:

  • High Voltage Electrical  external applications in the Middle East
  • Petrochemical Industry
  • Pharmaceutical Industry
  • Food Processing Industry
  • Nuclear Industry
  • Automotive Industry
  • Amongst others

Types

Bastion Glassfibre Ltd supply six different types of PVDF.

Click each heading in the panel below to view properties, colours, areas of application, uses and technical data associated with each type:

PVDF

PVDF is a vinylidene-fluoride-based polymerisate outstanding for its excellent chemical resistance, excellent machinability and universal applicability. Because of its special properties Polystone® PVDF is especially suited for applications in the chemical industry. Its high purity makes it the ideal material for the semiconductor industry.

Type of product

Compression moulded sheets, extruded sheets, round rods, square tubes, U profiles, welding rods, coils

Special properties

  • High temperature resistance
  • Outstanding chemical resistance
  • Low coefficient of friction
  • Excellent ageing properties
  • Good electrical properties
  • Almost no moisture absorption
  • Excellent weldability

Colours

Black, Natural

Typical areas of application

  • Clean room technology
  • Semiconductor industry
  • Galvanotechnology
  • Tank linings
  • Pump housings and impellers
  • Seals
  • Fittings

Technical data

Test Method Unit Value
General Properties
Density DIN EN ISO 1183-1 g/cm3 1,78
Water absorption DIN EN ISO 62 % <0,04
Flammability (Thickness 3 mm / 6 mm) UL 94 V0
Mechanical Properties
Yield stress DIN EN ISO 527 MPa 55
Elongation at break DIN EN ISO 527 % 30
Tensile modulus of elasticity DIN EN ISO 527 MPa 2200
Notched impact strength (charpy) DIN EN ISO 179 kJ/m2 15
Shore hardness DIN EN ISO 868 scale D 77
Thermal Properties
Melting temperature ISO 11357-3 °C 172-175
Thermal conductivity DIN 52612-1 W/(m*K) 0,19
Thermal capacity DIN 52612 kJ / (kg * K) 1,20
Coefficient of linear thermal expansion DIN 53752 10-6K-1 100-140
Service temperature, long term Average °C -20 ...140
Service temperature, short term (max.) Average °C 150
Heat deflection temperature DIN EN ISO 306, Vicat B °C 140
Electrical Properties
Dielectric constant IEC 60250 8,0
Dielectric dissipation factor (50 Hz) IEC 60250 0,02
Volume resistivity IEC 60093 &ohm; *cm >1014
Surface resistivity IEC 60093 &ohm; <14
Comparative tracking index IEC 60112 600
Dielectric strength IEC 60243 kV/mm 20

The data stated above are average values ascertained by statistical tests on a regular basis. They are in accordance with DIN EN 15860. The data above is provided purely for information and shall not be regarded as binding unless expressly agreed in a contract of sale.

PVDF FM 4910

A PVDF material which meets the requirements of the FM-Test 4910 (Factory Mutual Research Specification Test) and is thus an approved material for use in semiconductor and clean room technology.

Type of product

Compression moulded sheets, extruded sheets, coils

Special properties

  • High temperature resistance
  • Outstanding chemical resistance
  • Low coefficient of friction
  • Excellent ageing properties
  • Good electrical properties
  • Almost no moisture absorption
  • Excellent weldability

Colours

Natural

Typical areas of application

  • Plant construction in the clean room and semiconductor technology sector
  • Medical technology

Technical data

Test Method Unit Value
General Properties
Density DIN EN ISO 1183-1 g/cm3 1,78
Water absorption DIN EN ISO 62 % <0,04
Flammability (Thickness 3 mm / 6 mm) UL 94 V0
Mechanical Properties
Yield stress DIN EN ISO 527 N/mm2 55
Elongation at break DIN EN ISO 527 % 30
Tensile modulus of elasticity DIN EN ISO 527 MPa 2200
Notched impact strength (charpy) DIN EN ISO 179 kJ/m2 15
Shore hardness DIN EN ISO 868 scale D 77
Thermal Properties
Melting temperature ISO 11357-3 °C 172-175
Thermal conductivity DIN 52612-1 W/(m*K) 0,19
Thermal capacity DIN 52612 kJ / (kg * K) 1,20
Coefficient of linear thermal expansion DIN 53752 10-6K-1 100-140
Service temperature, long term Average °C -20 ...140
Service temperature, short term (max.) Average °C 150
Heat deflection temperature DIN EN ISO 306, Vicat B °C 140
Electrical Properties
Dielectric constant IEC 60250 8,0
Dielectric dissipation factor (50 Hz) IEC 60250 0,02
Volume resistivity IEC 60093 &ohm; *cm >1014
Surface resistivity IEC 60093 &ohm; <14
Comparative tracking index IEC 60112 600
Dielectric strength IEC 60243 kV/mm 20

The data stated above are average values ascertained by statistical tests on a regular basis. They are in accordance with DIN EN 15860. The data above is provided purely for information and shall not be regarded as binding unless expressly agreed in a contract of sale.

PVDF SK/GK

PVDF SK/GK sheets are backed on one side to enable them to be bonded with other materials. The material used for the coating is either a polyester stretch (SK) or, in the case of strongly diffusing chemicals and/or high temperature fluctuations, knitted glass fibre (GK).

Type of product

Extruded sheets, coils

Special properties

  • Excellent weldability and processing properties
  • Especially firm adhesion in the composite system and therefore especially suitable for container and plant construction
  • Especially high resistance to acids
  • Very high heat resistance
  • Excellent ageing properties

Colours

Natural

Typical areas of application

  • Inliners for tank building
  • Galvanotechnology
  • Corrosion protection

Technical data

Test Method Unit Value
General Properties
Density DIN EN ISO 1183-1 g/cm3 1,78
Water absorption DIN EN ISO 62 % <0,04
Flammability (Thickness 3 mm / 6 mm) UL 94 V0
Mechanical Properties
Yield stress DIN EN ISO 527 MPa 55
Elongation at break DIN EN ISO 527 % 30
Tensile modulus of elasticity DIN EN ISO 527 MPa 2200
Notched impact strength (charpy) DIN EN ISO 179 kJ/m2 15
Shore hardness DIN EN ISO 868 scale D 77
Thermal Properties
Melting temperature ISO 11357-3 °C 172-175
Thermal conductivity DIN 52612-1 W/(m*K) 0,19
Thermal capacity DIN 52612 kJ / (kg * K) 1,20
Coefficient of linear thermal expansion DIN 53752 10-6K-1 100-140
Service temperature, long term Average °C -20 ...140
Service temperature, short term (max.) Average °C 150
Heat deflection temperature DIN EN ISO 306, Vicat B °C 140
Electrical Properties
Dielectric constant IEC 60250 8,0
Dielectric dissipation factor (50 Hz) IEC 60250 0,02
Volume resistivity IEC 60093 &ohm; *cm >1014
Surface resistivity IEC 60093 &ohm; <14
Comparative tracking index IEC 60112 600
Dielectric strength IEC 60243 kV/mm 20

The data stated above are average values ascertained by statistical tests on a regular basis. They are in accordance with DIN EN 15860. The data above is provided purely for information and shall not be regarded as binding unless expressly agreed in a contract of sale.

PVDF FG

Semi-crystalline thermoplastic

Properties

  • meets the requirements of the regulation (EC) No. 1935/2004 on materials intended to come in contact with food
  • extremely good weather resistance
  • high purity (free from plasticizers, sliding agents and flame inhibitive additives)
  • high tensile strength and stiffness
  • high impact strength, also at low temperatures
  • good thermoformability
  • excellent weldability
  • high continuous service temperature
  • good electrical insulating properties

Field of application

Food processing industry

Technical data

Test Method Unit Value
General Properties
Density DIN EN ISO 1183-1 g/cm3 1,78
Water absorption DIN EN ISO 62 % <0,04
Flammability (Thickness 3 mm / 6 mm) UL 94 V0 / V0
Mechanical Properties
Yield stress DIN EN ISO 527 MPa 55
Elongation at break DIN EN ISO 527 % 30
Tensile modulus of elasticity DIN EN ISO 527 MPa 2100
Notched impact strength (charpy) DIN EN ISO 179 kJ/m2 12,0
Ball indentation hardness DIN EN ISO 2039-1 MPa 130
Shore hardness DIN EN ISO 868 scale D 80
Thermal Properties
Melting temperature ISO 11357-3 °C 178
Thermal conductivity DIN 52612-1 W/(m*K) 0,20
Thermal capacity DIN 52612 kJ / (kg * K) 1,2
Coefficient of linear thermal expansion DIN 53752 10-6K-1 140
Service temperature, long term Average °C -20 ...140
Service temperature, short term (max.) Average °C 150
Heat deflection temperature DIN EN ISO 75, method A °C 115
Electrical Properties
Dielectric constant IEC 60250 9
Dielectric dissipation factor (50 Hz) IEC 60250 0,02
Volume resistivity IEC 60093 &ohm; *cm >1014
Surface resistivity IEC 60093 &ohm; <14
Comparative tracking index IEC 60112 600
Dielectric strength IEC 60243 kV/mm 21

The short-term maximum application temperature only applies to very low mechanical stress for a few hours. The long-term maximum application temperature is based on the thermal ageing of plastics by oxidation, resulting in a decrease of the mechanical properties. This applies to an exposure to temperatures for at least 5.000 hours causing a 50% loss of the tensile strength from the original value (measured at room temperature). This value says nothing about the mechanical strength of the material at high application temperatures. In case of thick-walled parts, only the surface layer is affected by oxidation from high temperatures. With the addition of antioxidants, a better protection of the surface layer is achieved. In any case, the center area of the material remains unaffected. The minimum application temperature is basically influenced by possible stress factors like impact and/or shock under application. The values stated refer to an minimum degree of impact stress. The electrical properties as stated result from measurements on natural, dry material. With other colours (in particular black) or saturated material, there may be clear differences in the electrical properties. The data stated above are average values ascertained by statistical tests on a regular basis. They are in accordance with DIN EN 15860. They serve as information about our products and are presented as a guide to choose from our range of materials. This, however, does not include an assurance of specific properties or the suitability for particular application purposes that are legally binding. Since the properties also depend on the dimension of the semi-finished products and the degree of crystallization (e.g. nucleating by pigments), the actual values of the properties of a particular product may differ from the indicated values. Special construction details or further material specifications on request.

PVDF ESD 60

Semi-crystalline thermoplastic

Properties

  • electrically conductive
  • high UV resistance
  • high chemical resistance

Field of application

Parts which call for outstanding chemical resistance, also at high temperatures.

Chemical engineering, electrical, semiconductor and foodstuffs industry

e.g. seals, valve and pump parts, membranes, housings, containers, pipes and sleeves

Technical data

Test Method Unit Value
General Properties
Density DIN EN ISO 1183-1 g/cm3 1,79
Water absorption DIN EN ISO 62 % <0,04
Flammability (Thickness 3 mm / 6 mm) UL 94 V0 / V0
Mechanical Properties
Yield stress DIN EN ISO 527 MPa 58
Elongation at break DIN EN ISO 527 % 10
Tensile modulus of elasticity DIN EN ISO 527 MPa 2500
Notched impact strength (charpy) DIN EN ISO 179 kJ/m2 7,0
Ball indentation hardness DIN EN ISO 2039-1 MPa 130
Shore hardness DIN EN ISO 868 scale D 79
Thermal Properties
Melting temperature ISO 11357-3 °C 178
Thermal conductivity DIN 52612-1 W/(m*K) -
Thermal capacity DIN 52612 kJ / (kg * K) -
Coefficient of linear thermal expansion DIN 53752 10-6K-1 140
Service temperature, long term Average °C -20 ...140
Service temperature, short term (max.) Average °C 150
Heat deflection temperature DIN EN ISO 75, method A °C -
Electrical Properties
Dielectric constant IEC 60250 -
Dielectric dissipation factor (50 Hz) IEC 60250 -
Volume resistivity IEC 60093 &ohm; *cm >1014
Surface resistivity IEC 60093 &ohm; <14
Comparative tracking index IEC 60112 -
Dielectric strength IEC 60243 kV/mm -

The short-term maximum application temperature only applies to very low mechanical stress for a few hours. The long-term maximum application temperature is based on the thermal ageing of plastics by oxidation, resulting in a decrease of the mechanical properties. This applies to an exposure to temperatures for at least 5.000 hours causing a 50% loss of the tensile strength from the original value (measured at room temperature). This value says nothing about the mechanical strength of the material at high application temperatures. In case of thick-walled parts, only the surface layer is affected by oxidation from high temperatures. With the addition of antioxidants, a better protection of the surface layer is achieved. In any case, the center area of the material remains unaffected. The minimum application temperature is basically influenced by possible stress factors like impact and/or shock under application. The values stated refer to an minimum degree of impact stress. The electrical properties as stated result from measurements on natural, dry material. With other colours (in particular black) or saturated material, there may be clear differences in the electrical properties. The data stated above are average values ascertained by statistical tests on a regular basis. They are in accordance with DIN EN 15860. They serve as information about our products and are presented as a guide to choose from our range of materials. This, however, does not include an assurance of specific properties or the suitability for particular application purposes that are legally binding. Since the properties also depend on the dimension of the semi-finished products and the degree of crystallization (e.g. nucleating by pigments), the actual values of the properties of a particular product may differ from the indicated values. Special construction details or further material specifications on request.

The information found above is available in downloadable PDF files in the data sheets section below.

Datasheets

Listed below are full data sheets for each type of PVDF available from Bastion Glassfibre Ltd.

Right click the link to save a copy to your device. If your device supports the opening of PDF files in your web browser, this will open in a new window (or tab).

Adobe PDF icon PVDF Data Sheet (123k KB)

Adobe PDF icon PVDF FM 4910 Data Sheet (123k KB)

Adobe PDF icon PVDF SK/GK Data Sheet (123k KB)

Adobe PDF icon PVDF FG Data Sheet (193k KB)

Adobe PDF icon PVDF ESD 60 Data Sheet (86k KB)

If you are unable to view the PDF document on your device, please try downloading a suitable PDF document viewer such as Adobe Reader (linked below and will open in a new window or tab). Alternatively, please contact us for further details.

Pricing

Prices for all types and variaties available from Bastion Glassfibre Ltd are available in the table below.

High Performance Rods

Price £ per metre Tolerance (mm) PVDF
diameter mm Min Max Natural
8 +0.1 +0.5 £4.95
10 +0.2 +0.7 £7.90
12 +0.2 +0.7 £10.87
16 +0.2 +0.7 £19.28
20 +0.2 +0.9 £29.66
22 +0.2 +0.7 £36.09
25 +0.2 +1.1 £46.47
28 +0.2 +1.1 £57.85
30 +0.3 +1.3 £66.26
35 +0.3 +1.6 £90.47
40 +0.3 +1.6 £117.68
45 +0.4 +2.0 £149.33
50 +0.5 +2.2 £183.44
60 +0.6 +2.5 £264.53
70 +0.8 +3.5 £357.98
80 +0.9 +3.8 £593.82
90 +0.9 +3.8 £593.82
100 +1.0 +4.2 £733.75
110 +1.1 +4.5 £890.50
125 +1.2 +5.0 £1150.56
150 +1.3 +5.5 £1656.88
180 +1.5 +6.2 £2385.68
200 +1.6 +6.5 £2943.90

PVDF Sheet

Price £ per metre Thickness (mm) PVDF (620mm Wide)
thickness mm Min Max Natural
8 +0.2 +0.9 £477.18
10 +0.2 +0.9 £589.19
12 +0.3 +1.5 £720.13
16 +0.3 +1.5 £943.69
20 +0.3 +1.5 £1166.76
25 +0.3 +1.5 £1446.08
30 +0.5 +2.5 £1758.87
40 +0.5 +2.5 £2317.01
50 +0.5 +2.5 £2875.66
60 +0.5 +3.5 £3461.94

PVDF Sheet

Price £ per metre Thickness (mm) PVDF (1000mm Wide)
thickness mm Min Max Natural
1 -0.1 +0.1 £17.59
2 -0.15 +0.15 £35.19
3 -0.2 +0.2 £52.87
4 -0.2 +0.2 £70.45
5 -0.25 +0.25 £88.06
6 -0.3 +0.3 £105.64
16 +0.3 +1.5 £330.71
20 +0.3 +1.5 £408.19
30 +0.5 +2.5 £615.44
50 +0.5 +2.5 £998.35

All prices are correct as of 1st October 2014.

All other PVDF products may be specially ordered. Please contact us to be quoted against your enquiry.