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GEHR PVDF® shows a higher tensile strength, pressure resistance and dimensional stability than the related PTFE, but friction and insulation properties are lower. PVDF has a high mechanical strength and toughness at lower temperature and it’s self-extinguishing. The operating temperature ranges from -30 °C to +150 °C. PVDF shows a high resistance to chlorine, bromine and high-energy radiation.

Polymer Name: Polyvinylidene Fluoride (PVDF)

Physical Form: Custom, Rods, Sheets

Features: Anti-Wear Properties, Chemical Resistant, Dimensional Stability, Excellent Mechanical Strength, Excellent Rigidity, Excellent Toughness, Good Tear Strength, Good UV Resistance, High Tensile Strength, Low Friction, Low Water Absorption, Radiation Resistant, Self Extinguishing

Density: 1780.0 - 1780.0 kg/m³

Color: Black

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Technologies

Features & Benefits

Properties
  • High tensile strength
  • High mechanical strength
  • High rigidity (also at low temperature)
  • High chemical resistance
  • Very low water absorption
  • Good friction and wear and tear values
  • Self-extinguishing
  • High UV-resistance
  • Toxic fumes when burned
  • Relatively high coefficient of thermal expansion

Applications & Uses

Plastics & Elastomers Processing Methods
Applications
  • Gaskets
  • Pump and sealing bodies
  • Rotation disks
  • Valves
  • Check valves
  • Extraction centrifuges
  • Fittings
  • Slide rails
  • Gear wheels, guide rails and wheels
  • Adapters
  • Components in the electrical industry and medical technology
  • Dosing stations, filter frames, flanges and sleeves
  • Roller conveyors, adjusting clamps

Properties

Color
Flame Rating
Physical Form
Form and Condition
Rods. Sheets / Solid
Odor
Odorless
Insoluble in
Water
Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Strength at Yield58MPaISO 527
Elongation at Yield (S)17%ISO 527
Tensile Strength at Break46MPaISO 527
Elongation at Break (R)29%ISO 527
Impact Strength (an)No breakkJ/m2ISO 179
Notch impact Strength (ak)12kJ/m2ISO 179
Ball Indentation (Rockwell Hardness)120MPaISO 2039
Hardness80Shore DISO 868
Flexural Strength (B 3,5 %)80MPaISO 178
Modulus of elasticity (Et)2125MPaISO 527
Physical Properties
ValueUnitsTest Method / Conditions
Specific Gravity1.78ISO 1183
Water Absorption0.04%ISO 62
Humidity Absorption0.01%ISO 62
Maximum Permissible Service Temperature150°CUL746B
Lower Permissible Service Temperature-30°CUL746B
Thermal Properties
ValueUnitsTest Method / Conditions
Vicat Softening Point (VST/B/50)138°CISO 306
Vicat Softening Point (VST/A/50)160°CISO 306
Heat Deflection Temperature (HDT/B)145°CISO 75
Coefficient of Linear Thermal Expansion0.47K-1.10-4ISO 11359
Coefficient of Linear Thermal Expansion1.3K-1.10-4ISO 11359
Heat Deflection Temperature (HDT/A)104°CISO 75
Thermal Conductivity (20°C)0.13W/(m.K)ISO 22007-4
Glass Transition Temperature (Tg)-40°CISO 3146
Melting Temperature (Tm)171°CISO 3146
Typical Properties
ValueUnitsTest Method / Conditions
Density1.78g/cm³
Melting Temperature165 - 175°C
Thermal Decompositionmin. 315°C
Electrical Properties
ValueUnitsTest Method / Conditions
Volume Resistivitymin. 10^10Ω.cmIEC 60093
Surface Resistivity (Ro)min. 10^12ΩIEC 60093
Dielectric Constant (1MHz)7-IEC 60250
Dielectric Loss Factor (1 MHz)0.24-IEC 60250
Dielectric Strength27kV/mmIEC 60243-1
Tracking ResistanceCTI 600VIEC 60112
Additional Information
ValueUnitsTest Method / Conditions
BondabilityLimited--
Physiological Indifference (EEC)Yes-
Physiological Indifference (FDA)Yes-
FlammabilityV-0-UL 94
Limiting Oxygen Index (LOI, 9)44%ASTM D2863
UV Stabilisation (6, 9)Yes--

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Fire-fighting Measures

Suitable extinguishing agents

Water, foam, dry chemical, carbon dioxide (CO2).

Potential combustion products

Carbon dioxide (CO2), carbon monoxide (CO). Formation of further decomposition and oxidation products depend upon the fire conditions. Under special fire conditions traces of other toxic substances are possible.

Special protective equipment

Wear a self-contained breathing apparatus. If exposed to combustion fumes bring the victim into fresh air.

Further information

Dispose of fire debris and contaminated extinguishing water in accordance with official regulations..

Safety & Health

Safety Measures

The general industrial safety measures should be considered. A thermal damage during machining should be avoided.

Storage & Handling

Machining

The product can be machined with standard machinery and tools. Before machining the product should be stored at room temperature 24 h. Evacuate swarf to prevent slipping or tripping. Observe the maximum allowable concentration of dust and formaldehyd levels on the working area which apply in your country. Wear safety goggles during machining. General dust limit value: Respirable dust (6 mg/m3); Inhalable dust (10 mg/m3 ).

Storage

The products shall be stored indoor to keep away from any source of degradation such as sunlight, UV-jets, ionizing radiation, chemicals.