PAI

PAI (polyamideimide) [Tor­lon®]

Prop­er­ties

  • High-performance non-crystalline engi­neer­ing thermoplastic
  • Heat-stable
  • Flex­i­bil­ity and elongation
  • Tough and impact-resistant
  • Very low coef­fi­cient of lin­ear ther­mal expansion
  • High creep resistance
  • Avail­able in elec­tri­cal grade (Tor­lon 4203), bear­ing grade (Tor­lon 4301) and glass-reinforced (Tor­lon 5530).

Com­mon uses

  • Elec­tri­cal con­nec­tors and insulators
  • Non-lubricated bear­ings, seals, bear­ing cages
  • Rec­i­p­ro­cat­ing com­pres­sor parts
  • Burn-in sock­ets and gears
  • Valve plates
  • Impellers
  • Rotors
  • Ter­mi­nal strips
Torlon

Tor­lon

polyimideimide

Poly­imideimide

Mate­r­ial Specifications

ASTM or UL test Prop­erty Tor­lon 4203
Phys­i­cal
D792 Den­sity (lb/in3)/(g/cm3) 0.051 (1.41)
D570 Water absorp­tion, 24 hrs (%) 0.4
Mechan­i­cal
D638 Ten­sile strength (psi) 18,000
D638 Ten­sile mod­u­lus (psi) 600,000
D638 Ten­sile elon­ga­tion at break (%) 10
D790 Flex­ural strength (psi) 24,000
D790 Flex­ural mod­u­lus (psi) 600,000
D785 Hard­ness, Shore D56
D256 Izod notched impact (ft-lb/in) E80
Ther­mal
D696 Coef­fi­cient of lin­ear ther­mal expan­sion (x 10–5 in/in/F°) 1.7
D648 Heat deflec­tion temp at 264 psi (F°/C°) 532/278
D3418 Melt­ing temp (F°/C°) -
- Max oper­at­ing temp (F°/C°) 500/260
UL94 Flam­ma­bil­ity rating V-O
Elec­tri­cal
D149 Dielec­tric strength (V/mil)
short time, & ⅛” thick
580
D150 Dielec­tric con­stant at 1 MHz 4.2
D150 Dis­si­pa­tion fac­tor at 1 MHz 0.026
D257 Vol­ume resis­tiv­ity (ohm/cm) at 50% RH >1016

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.