Torlon® poly(amide-imide) exhibits exceptional physical and chemical properties.
It can withstand continuous exposure at temperatures from 450F to 500F (230C to
260C). Torlon® 4301 and 4203 resins provide better compressive strength and
higher deflection temperature than most other high performance thermoplastics.
Their low coefficient of thermal expansion and high creep resistance provide
excellent dimensional stability over a wide range of temperatures. Chemically,
Torlon® resins are resistant to attack by aromatic and aliphatic hydrocarbons,
chlorinated and fluorinated hydrocarbons and most inorganic salts and acid
Exhibits superior electrical insulation at elevated temperatures and is
primarily designed for structural, electrical, and electronic applications.
In addition Torlon® 4203 displays excellent resistance to radiation.
Retaining the same basic physical and chemical properties as 4203, Torlon®
4301 is designed for bearing and wear applications such as non-lubricated
bearings, seals, valve and compressor parts, piston parts, and bearing
cages. It is used where high strength, resistance to wear, resistance to
elevated temperatures, and solvent resistance are important application
requirements. Torlon® 4301 has a very low coefficient of friction and
exhibits little or no slip-stick in bearing applications.
There are several other grades of Torlon® available.
Specific Gravity, 73F
Tensile Strength, 73F
Tensile Modulus of Elasticity, 73F
Flexural Strength, 73F
Flexural Modulus, 73F
Shear Strength, 73F
Compressive Strength, 10% Def., 73F
Compressive Modulus of Elasticity, 73F
Hardness, Rockwell, Scale as noted, 73F
Izod Impact (notched), 73F
D256 Type A
Coefficient of Friction (Dry vs Steel) Dynamic
Limiting PV, 73F
k (wear) factor
Coefficient of linear Thermal Expansion
Deflection Temperature 264 psi
Tg-Glass Transition (amorphous)
Continuous Service Temperature in Air (Max.)
Dielectric Strength, Short Term
Dielectric Constant, 10 6 Hz
Dissipation Factor, 10 6 Hz
Acids, Weak, 73F/23C, acetic acid, dilute hydrochloric or sulfuric
Acids, Strong, 73F/23C, conc. hydrochloric or sulfuric
Alkalies, Weak, 73F/23C, dilute ammonia or sodium hydroxide
Alkalies, Strong, 73F/23C, conc. ammonia or sodium hydroxide