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Torlon Thermoplastic Products

4301 Bearing Grade, 4203 Electrical Grade

4XG 30% Glass, 4XCF 30% Carbon Filled

Rods 

Sheets

Balls

 

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 solutions.

 

Typical Properties

  • Torlon 4203
    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.


  • Torlon 4301
    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.  


Torlon 4203

Property Method Unit Value
Mechanical
Specific Gravity, 73F D792   1.41
Tensile Strength, 73F D638 psi 18,000
Tensile Modulus of Elasticity, 73F D638 psi 600,000
Elongation, 73F D638 % 10.0
Flexural Strength, 73F D790 psi 24,000
Flexural Modulus, 73F D790 psi 600,000
Shear Strength, 73F D732 psi 16,000
Compressive Strength, 10% Def., 73F D695 psi 24,000
Compressive Modulus of Elasticity, 73F D695 psi 475,000
Hardness, Rockwell, Scale as noted, 73F D785   E80 (M120)
Izod Impact (notched), 73F D256 Type A ft-lb/in 2.0
Coefficient of Friction (Dry vs Steel) Dynamic PTM55007   0.35
Limiting PV, 73F PTM55007 psi-fpm 12,500
k (wear) factor PTM55010   50
Thermal
Coefficient of linear Thermal Expansion E-831(TMA) in/in/F 1.70x10-5
Deflection Temperature 264 psi D648 F 532
Tg-Glass Transition (amorphous) D3418 F 527
Continuous Service Temperature in Air (Max.)   F 500
Thermal Conductivity   BTU-in/(hr-ftF) 1.80
Electrical
Dielectric Strength, Short Term D149(2) Volts/mil 580
Surface Resistivity EOS/ESD S11.11 Ohm/square >1016
Dielectric Constant, 106 Hz D150(2)   4.20
Dissipation Factor, 106 Hz D150(2)   0.026
Chemical
Acids, Weak, 73F/23C, acetic acid, dilute hydrochloric or sulfuric Acceptable Service
Acids, Strong, 73F/23C, conc. hydrochloric or sulfuric Limited Service
Alkalies, Weak, 73F/23C, dilute ammonia or sodium hydroxide Limited Service
Alkalies, Strong, 73F/23C, conc. ammonia or sodium hydroxide Unacceptable
Hydrocarbons-Aromatic, 73F/23C, benzene, toluene Acceptable Service
Hydrocarbons-Aliphatic, 73F/23C, gasoline, hexane, grease Acceptable Service
Ketones, Esters, 73F/23C, acetone, methyl ethyl ketone Acceptable Service
Ethers, 73F/23C, diethyl ether, tetrahydrofuran Acceptable Service
Chlorinated Solvents, 73F/23C, methylene chloride, chloroform Acceptable Service
Alcohols, 73F/23C, methanol, ethanol, anti-freeze Acceptable Service
Inorganic Salt Solutions, 73F/23C, sodium chloride, potassium cyanate Acceptable Service
Continuous Sunlight, 73F/23C Limited Service
Miscellaneous   
Water Absorption Immersion, 24 hr D570 % 0.40
Water Absorption Immersion, Sat. D570 % 1.70
Ionic Impurities - Na (Sodium) Total Digestion ppm 14.50
Ionic Impurities - K (Potassium) Total Digestion ppm 3.90
Ionic Impurities - Fe (Iron) Total Digestion ppm 0.10
Outgassing TML (Total Mass Loss) E595 % 1.90
CVCM (Collected Volatile Condensable Material) E595 % 0.00
WVR (Water Vapor Regained) E595 % 0.50
Compliance
UL94     V-0

Torlon 4301

Property Method Unit Value
Mechanical
Specific Gravity, 73F D792   1.45
Tensile Strength, 73F D638 psi 12,000
Tensile Modulus of Elasticity, 73F D638 psi 900,000
Elongation, 73F D638 % 3.0
Flexural Strength, 73F D790 psi 23,000
Flexural Modulus, 73F D790 psi 800,000
Shear Strength, 73F D732 psi 16,400
Compressive Strength, 10% Def., 73F D695 psi 22,000
Compressive Modulus of Elasticity, 73F D695 psi 950,000
Hardness, Rockwell, Scale as noted, 73F D785   E70 (M106)
Izod Impact (notched), 73F D256 Type A ft-lb/in 0.8
Coefficient of Friction (Dry vs Steel) Dynamic PTM55007   0.20
Limiting PV, 73F PTM55007 psi-fpm 22,500
k (wear) factor PTM55010   10
Thermal
Coefficient of linear Thermal Expansion E-831(TMA) in/in/F 1.40x10-5
Deflection Temperature 264 psi D648 F 534
Tg-Glass Transition (amorphous) D3418 F 527
Continuous Service Temperature in Air (Max.)   F 500
Thermal Conductivity   BTU-in/(hr-ftF) 3.70
Electrical
Surface Resistivity EOS/ESD S11.11 Ohm/square >1015
Dielectric Constant, 106 Hz D150(2)   6.00
Dissipation Factor, 106 Hz D150(2)   0.037
Chemical
Acids, Weak, 73F/23C, acetic acid, dilute hydrochloric or sulfuric Acceptable Service
Acids, Strong, 73F/23C, conc. hydrochloric or sulfuric Limited Service
Alkalies, Weak, 73F/23C, dilute ammonia or sodium hydroxide Limited Service
Alkalies, Strong, 73F/23C, conc. ammonia or sodium hydroxide Unacceptable
Hydrocarbons-Aromatic, 73F/23C, benzene, toluene Acceptable Service
Hydrocarbons-Aliphatic, 73F/23C, gasoline, hexane, grease Acceptable Service
Ketones, Esters, 73F/23C, acetone, methyl ethyl ketone Acceptable Service
Ethers, 73F/23C, diethyl ether, tetrahydrofuran Acceptable Service
Chlorinated Solvents, 73F/23C, methylene chloride, chloroform Acceptable Service
Alcohols, 73F/23C, methanol, ethanol, anti-freeze Acceptable Service
Inorganic Salt Solutions, 73F/23C, sodium chloride, potassium cyanate Acceptable Service
Continuous Sunlight, 73F/23C Acceptable Service
Miscellaneous   
Water Absorption Immersion, 24 hr D570 % 0.40
Water Absorption Immersion, Sat. D570 % 1.50
Compliance
UL94     V-0

Torlon is a registered trademark of Amoco Performance Products, Inc.

 

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