Polyvinyldene

Polyvinyldene (PVDF) [Kynar®]

Prop­er­ties

  • High-molecular weight crys­talline ther­mo­plas­tic poly­mer of vinyli­dene fluoride
  • Corrosion-, impact-, ultra­vi­o­let light– and chemical-resistant
  • Per­forms in many appli­ca­tions up to 300°F (149°C)
  • Tough and durable
  • Eas­ily fab­ri­cated into fin­ished parts
  • PVDF stock shapes may be made from Kynar 740 resin, which com­plies with FDA reg­u­la­tion 21 CFR 177.2510, USDA, USP XX Class VI, 3A san­i­tary stan­dards and meets ASTM D3222 resin specifications.

Com­mon uses

  • Tanks and process equipment
  • Tank lin­ings
  • Pump and valve components
  • Pipe flanges and spacers
  • Com­po­nents for wet-process stations
  • Food trays for high-heat applications
Kynar

Kynar

Mate­r­ial Specifications

ASTM or UL test Prop­erty Value
Phys­i­cal
D792 Den­sity (lb/in3)/(g/cm3) 0.064 (1.77)
D570 Water absorp­tion, 24 hrs (%) 0.03
Mechan­i­cal
D638 Ten­sile strength (psi) 6,300
D638 Ten­sile mod­u­lus (psi) 290,000
D638 Ten­sile elon­ga­tion at break (%) 50
D790 Flex­ural strength (psi) 9,700
D790 Flex­ural mod­u­lus (psi) 290,000
D785 Hard­ness, Shore D 75
D256 Izod notched impact (ft-lb/in) 3.0
Ther­mal
D696 Coef­fi­cient of lin­ear ther­mal
expan­sion (x 10–5 in./in./°F)
6.6
D648 Heat deflec­tion temp (F°/C°) at 264 psi 230/110
D3418 Melt­ing temp (F°/C°) 332/166
- Max oper­at­ing temp (F°/C°) 275/130
C177 Ther­mal con­duc­tiv­ity
(BTU-in/ft²-hr-°F)
1.2
UL94 Flam­ma­bil­ity rating V-O
Elec­tri­cal
D150 Dielec­tric con­stant at 1 MHz 8.5
D150 Dis­si­pa­tion fac­tor at 1 MHz 0.05
D150 Dielec­tric strength (V/mil) 1,700
D257 Vol­ume resis­tiv­ity (ohm/cm) at 50% RH 1.5 x 1015

These are typ­i­cal val­ues for ref­er­ence and com­par­i­son only. They should not be used as a basis for design spec­i­fi­ca­tions or qual­ity con­trol. Con­tact us for the man­u­fac­tur­ers’ com­plete mate­r­ial prop­erty datasheets. All val­ues were taken at 73°F (23°C) unless oth­er­wise noted.

Don’t see what you’re look­ing for? Call us at 800–423-2769 or email us at tom@crownplasticsinc.com.