Polypropylene

Polypropy­lene

Prop­er­ties

  • Eco­nom­i­cal
  • Resis­tant to organic sol­vents, degreas­ing agents and elec­trolytic attack
  • Light­weight, semi-rigid
  • Resis­tant to staining
  • Low moisture-absorption rate
  • Heat-resistant
  • High ten­sile strength
  • Impact-resistant
  • High com­pres­sive strength
  • Retains stiff­ness and flex
  • Eas­ily fabricated

Com­mon uses

  • Chemical-resistant tanks and linings
  • Lab­o­ra­tory con­soles, sinks and ducts
  • Plat­ing bar­rels and tanks
  • Lava­tory partitions
  • Fil­ter press plates
  • Rail­road cross­ing components
  • Pump com­po­nents and housings
  • Pros­thetic devices
  • Die-cutting pads
  • Clean room walls, floors and ceilings

polypropylene

Polypropy­lene

Mate­r­ial Specifications

ASTM or UL test Prop­erty Homopoly­mer
Phys­i­cal
D792 Den­sity (lb/in3)/(g/cm3) 0.033 (0.905)
D570 Water absorp­tion, 24 hrs (%) <0.01
Mechan­i­cal
D638 Ten­sile strength (psi) 4,800
D638 Ten­sile mod­u­lus (psi) 195,000
D638 Ten­sile elon­ga­tion at break (%) 12
D790 Flex­ural strength (psi) 7,000
D790 Flex­ural mod­u­lus (psi) 180,000
D785 Hard­ness, Rockwell 92
D256 Izod notched impact (ft-lb/in) 1.9
Ther­mal
D696 Coef­fi­cient of lin­ear ther­mal
expan­sion (x 10–5 in./in./°F)
6.2
D648 Heat deflec­tion temp (F°/C°) 210/99
D3418 Melt­ing temp (F°/C°) at 264 psi 327/164
- Max oper­at­ing temp (F°/C°) 180/82
C177 Ther­mal con­duc­tiv­ity
(BTU-in/ft²-hr-°F)
0.76–0.81
UL94 Flam­ma­bil­ity rating H-B
Elec­tri­cal
D150 Dielec­tric con­stant at 1 KHz 2.25
D150 Dis­si­pa­tion fac­tor at 1 KHz 0.0005–0.0018
D150 Dielec­tric strength at 1KHz 500–660
D495 Arc resis­tance (sec) 160
D257 Vol­ume resis­tiv­ity (ohm/cm) at 50% RH 8.5 x 1014

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.