PETP

PETP (poly­eth­yl­enetereph­tha­late) [Ert­alyte®, Rynite®, Tecadur®]

Prop­er­ties

  • Unre­in­forced, semi-crystalline ther­mo­plas­tic polyester
  • The wear resis­tance of nylon with the dimen­sional sta­bil­ity of acetal
  • Excel­lent for both dry and wet settings
  • Strong and rigid
  • Stain– and acid-resistant
  • FDA-compliant in nat­ural and black
  • USDA, 3A-Dairy and Canada AG-compliant in natural

Com­mon uses

  • Ideal for pre­ci­sion mechan­i­cal parts
  • Parts used in the food-processing and food-equipment industries
  • Parts on phar­ma­ceu­ti­cal test equipment
PETP

PETP

Mate­r­ial Specifications

ASTM or UL test Prop­erty Unfilled TX Lubri­cated
Phys­i­cal
D792 Den­sity (lb/in3)/(g/cm3) 0.051 (1.41) 0.052 (1.44)
D570 Water absorp­tion, 24 hrs (%) 0.07 0.06
Mechan­i­cal
D638 Ten­sile strength (psi) 12,400 11,000
D638 Ten­sile mod­u­lus (psi) 460,000 500,000
D638 Ten­sile elon­ga­tion at break (%) 20 5
D790 Flex­ural strength (psi) 18,000 16,000
D790 Flex­ural mod­u­lus (psi) 490,000 460,000
D695 Com­pres­sive strength (psi) 15,000 15,250
D695 Com­pres­sive mod­u­lus (psi) 420,000 400,000
D2240 Hard­ness, Rockwell M93/R125 M94
D256 Izod notched impact (ft-lb/in) 0.5 0.4
Ther­mal
D696 Coef­fi­cient of lin­ear ther­mal expan­sion (x 10–5 in/in/F°/C°) 3.30 4.50
D648 Heat deflec­tion temp (F°/C°) at 264 psi 240/116 180/82
D3418 Melt­ing temp (F°/C°) 49½55 49½55
- Max oper­at­ing temp (F°/C°) 210/99 210/99
C177 Ther­mal con­duc­tiv­ity
(BTU-in/ft2–h– F°)
1.9 6.6
UL94 Flam­ma­bil­ity rating H-B H-B
Elec­tri­cal
D149 Dielec­tric strength (V/mil) short time, ⅛” thick 385 -
D150 Dielec­tric con­stant at 60 Hz 3.4 -
D150 Dis­si­pa­tion fac­tor at 60 Hz - -
D257 Vol­ume resis­tiv­ity (ohm/cm) at 50% RH >1013 >1013

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.