TORLON® 4301 PAI / DURATRON® 4301 (BEARING GRADE POLYAMIDE-IMIDE)

TORLON® 4301 PAI / DURATRON® 4301 (BEARING GRADE POLYAMIDE-IMIDE)

Material Information

Torlon® 4301 PAI is an amorphous thermoplastic called a polyamide-imide. It is an extruded grade of Torlon®. Torlon® 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® has a relatively high moisture absorption rate so it should be kept dry prior to insulation. Torlon® 4301 is the grade best suited for general purpose wear and friction parts. Torlon® 4301 contains 12% graphite powder and 3% PTFE, which gives the material a very low expansion rate, a low coefficient of friction, and little or no slip-stick while in use. Its flexural modulus is also higher than most other advanced engineering plastics (1,000,000 psi). These characteristics allow Torlon® 4301 to excel in severe service wear applications. It is available in the form of sheets and rod.

Quadrant® EPP uses the brand name Duratron® T4301 for this material.

Application

  • Non-lubricated bearings
  • Seals
  • Bearing cages
  • Reciprocating compressor parts

Properties

  • 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

Physical

Astm Test Method

Duratron® T4301 PAI

Density (lb/in^3) D792 0.052
Specific Gravity D792 1.45
Water Absorption @ 24 hours (%) D570 0.4
Water Saturation (%) D570 1.5

Mechanical

Tensile Strength (PSI) D638 15,000
Tensile Modulus (PSI) D638 900,000
Tensile Elongation at Break (%) D638 3
Flexural Strength (PSI) D790 23,000
Flexural Modulus (PSI) D790 800,000
Shear Strength (PSI) D732 16,400
Compressive Strength (PSI) D695 22,000
Compressive Modulus (PSI) D695 950,000
Izod Impact (Notched), ft-lb/in D256 0.8
Rockwell Hardness D785 E70, M106
Coefficient of Friction (Dry vs Steel)
Dynamic
PTM 55007 0.2
Limiting PV (4:1 Safety Factor)
(ft-lb-in^2-min)
PTM 55007 22,500
Wear Factor “K” x 10^-10
(in^3-min/ft-lb-hr)
PTM 55010 10

Thermal

Coefficient of Thermal Expansion,
10^-5/°F
D696 1.4
Heat Deflection Temperature 264 psi, ºF D648 534
Glass Transition Temp, ºF D3418 527
Continous Service Temp (Operating), °F  - 500
Thermal Conductivity, BTU-in/hr-ft² °F F433 3.7
Flammability Rating UL94 VO

Electrical

Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
D149 -
Surface Resistivity (ohms/square) EOS/ESD S11.11 > 10^13
Dielectric Constant at 1 MHz D150 6
Dissipation Factor at 1 MHz D150 0.037

NOTE:

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.