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Material Information

Torlon® 5530 PAI is an amorphous thermoplastic called a polyamide-imide. It is a 30% glass reinforced compression molded grade of Torlon® PAI. Torlon® PAI is the highest performing melt processable plastic and has superior resistance to elevated temperatures. It is able to perform with superior mechanical properties under severe stress conditions at continuous temperatures up to 500º F. Its glass transition temperature is 537º F. It also has good dimensional stability and creep, impact, and chemical resistance. However, Torlon® PAI has a relatively high moisture absorption rate so it should be kept dry prior to insulation. Torlon® 5530 PAI is ideal for higher load structural or electronic applications because its glass reinforcement improves the load capacity, rigidity, and retention of stiffness. It commonly replaces metals in certain applications because it is equivalent in strength and structural integrity while weighing over 75% less. Torlon® 5530 PAI is used specifically for large shapes or when the greatest degree of dimensional control is required. Quadrant® EPP uses the brand name Duratron® T5530 for this material.


  • Burn-in sockets
  • Gears
  • Valve plates
  • Impellers
  • Rotors
  • Terminal strips
  • Insulators


  • Excellent load capacity
  • Very rigid
  • Very low expansion rate
  • Low coefficient of friction
  • Little or no slip-stick
  • Very high flexural modulus
  • Superior resistance to elevated temperatures
  • Good dimensional stability
  • Creep resistant
  • Self-lubricating
  • Good chemical resistance
  • Lightweight
  • Superior mechanical properties at elevated temperatures
  • Absorbs moisture


PhysicalAstm Test MethodDuratron® T5530
Density (lb/in^3)D7920.058
Specific GravityD7921.61
Water Absorption @ 24 hours (%)D5700.3
Water Saturation (%)D5701.5
Tensile Strength (PSI)D63815,000
Tensile Modulus (PSI)D638900,000
Tensile Elongation at Break (%)D6383
Flexural Strength (PSI)D79020,000
Flexural Modulus (PSI)D790900,000
Shear Strength (PSI)D732
Compressive Strength (PSI)D69527,000
Compressive Modulus (PSI)D695600,000
Izod Impact (Notched), ft-lb/inD2560.7
Rockwell HardnessD785E85, M106
Coefficient of Friction (Dry vs Steel)
PTM 550070.2
Limiting PV (4:1 Safety Factor)
PTM 5500720,000
Wear Factor “K” x 10^-10
PTM 55010
Coefficient of Thermal Expansion,
Heat Deflection Temperature 264 psi, ºFD648520
Glass Transition Temp, ºFD3418527
Continous Service Temp (Operating), °F500
Thermal Conductivity, BTU-in/hr-ft² °FC1772.5
Flammability RatingUL94VO
Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
Surface Resistivity (ohms/square)EOS/ESD S11.11> 10^13
Dielectric Constant at 1 MHzD150
Dissipation Factor at 1 MHzD150

Disclosure: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.


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