PVDF - Polyvinylidene Fluoride

Withstands heavy loads under tension, bending and compression

Due to PVDF's high mechanical strength, stiffness, high abrasion resistance and low coefficient of friction, it is highly suitable for the manufacture of machine parts. 

PVDF falls into fire class B1 (according to DIN 4102), which means the material is flame-resistant and self-extinguishing. In addition, PVDF is fully approved and certified for food contact according to the European 10/2011 Food Grade legislation. This is essential in the canning and food industry, meat and fish processing companies and other applications where non-toxic behaviour, the environment and hygiene are important. Amari Plastics also has certification for the benefit of the Federal Health Office and the Food and Drugs Administration.

PVDF in our webshop

PVDF rod
Rod

Unique features

  • High compressive strength
  • Low creep symptoms
  • Suitable for food contact
  • Good weldability
  • Good chemical resistance

Applications

  • Chemical Engineering And Tank Building
  • Clean Room And Semi-Conductor Industry
  • Electrical Industry
  • Food Processing Industry

Machining options

  • Welding
  • Water jet cutting
  • Laser cutting
  • Gluing
  • Warm bending
  • Cold bending
  • Thermoforming
  • Yes
  • Not in all cases
  • No

How to identify PVDF

Colour is not always an indicator, but PVDF can often be identified by its opal, milky colour. As you can see PVDF is not easily flammable.

The specific gravity is higher than 1, which means that PVDF does not float.

Info per segment

PVDF Engineering Plastics

This industry-wide, high-performance plastic is highly-used to withstand heavy loads, used under tension and for bending and compression. It also has a very high resistance to chemicals, is UV resistant and flame retardant.

PVDF is suitable for direct contact with food due to its inherent material purity. 

Applications

  • Scrapers

  • Insulating bushes

  • Machine parts

  • Parts for piping systems

  • Storage tanks

Example

PVDF TK

What are the main technical properties of PVDF?

PVDF is a fluoroplastic and, due to its composition, has a good resistance to very pure chemicals.  The high purity of the material also makes PVDF suitable for contact with ultrapure water.  PVDF is suitable for infrared welding. As a result, the groove in the tube is many times smaller compared to other welding methods. 

Technical information

  • General
    Definition Norm Unit Value
    Density ISO 1183 g/cm³ 1.78
    Moisture absorption in normal climate 0.02
    Fire rating DIN 4102 B 1
    Specific heat capacity kj/Kg°C 0.96
  • Mechanical
    Definition Norm Unit Value
    Tensile strength DIN 53455 N/mm 56
    Elongation to break DIN 53455 22
    E-Module DIN 53457 (23°C) N/mm²  1950
    Bending strength DIN 53452 N/mm²  75
    Impact strength DIN 53453 (23°C) Charpy 12
    Shore or ball pressure hardness Shore °D 78
    Coefficient of friction 0.34
  • Electrical
    Definition Norm Unit Value
    Relative electrical constant DIN 53485 (100Hz) 100 Hz 6.8
    Dielectric Loss Factor DIN 53483 (100Hz) tan (..x10-³ 0.017
    Specific resistance DIN 53482 16 cm >10
    Surface resistance DIN 53482 13 >10
    Creep current resistance DIN 53480 KC 125
    Breakdown voltage DIN 53481 kV/mm 25
  • Thermal
    Definition Norm Unit Value
    Crystalline melting point °C 170-180
    Heat conductivity DIN 52162 W/m°K 0.13
    Linear coefficient of expansion DIN 53762 mm/m°C 0.14
    Long-term no-load operating temperature °C -40 / 140
    Maximum short-term operating temperature °C 150
    Heat deformation DIN 53461 °C 140
  • Temperature range
    Minimum temperature Maximum temperature
     -40°C  +140°C

Machining data

  • Circular sawing
    Clearance angle (α) 10 - 15 [o]
    Rake angle (λ) 5 - 15 [o]
    Cutting speed 2000-4000 [m/min]
    Tooth pitch 2-8 [mm]
  • Band sawing
    Clearance angle (α) 30-40 [o]
    Rake angle (λ) 0 - 10 [o]
    Cutting speed 500-1500 [m/min]
    Tooth pitch 2-8 [mm]
  • Drilling
    Clearance angle (α) 10 - 15 [o]
    Rake angle (λ) 0 [o]
    Top angle (φ) 80 - 110 [o]
    Cutting speed 50 - 100 [m/min]
    Start 0.2 - 0.7 [mm/rev]
  • Turning
    Clearance angle (α) 5 - 15 [o]
    Rake angle (λ) 0 - 15 [o]
    Setting angle (χ) 45 - 60 [o]
    Cutting speed 200 - 500 [m/min]
    Start 0.1 - 0.5 [mm]
  • Milling
    Clearance angle (α) 5 - 15 [o]
    Rake angle (λ) <10 [o]
    Cutting speed <1000 [m/min]
    Start 0.1 - 0.5 [mm/rev]