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TORLON®
Torlon
poly(amide-imide) exhibits exceptional physical and chemical properties.
It can withstand continuous exposure at temperatures from 450ºF to 500ºF
(230ºC to 260ºC). 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.
Product Applications
Torlon products are used where high strength, resistance to wear, solvents and elevated temperatures are important application requirements. Examples include:
- Non-lubricated bearings
- Seals
- Valves
- Compressor parts
- Piston parts
- Bearing cages
Torlon possesses superior electrical and structural characteristics at elevated temperatures, and excellent radiation resistance. Torlon is used for:
- High temperature seals
- Electrical components and valve parts exposed to chemicals at elevated temperatures and pressures.
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. Please contact Alro Plastics for additional information.
Torlon 4203
| Property | Method | Unit | Value |
| Mechanical | |||
| Specific Gravity, 73°F | D792 | 1.41 | |
| Tensile Strength, 73°F | D638 | psi | 18,000 |
| Tensile Modulus of Elasticity, 73°F | D638 | psi | 600,000 |
| Elongation, 73°F | D638 | % | 10.0 |
| Flexural Strength, 73°F | D790 | psi | 24,000 |
| Flexural Modulus, 73°F | D790 | psi | 600,000 |
| Shear Strength, 73°F | D732 | psi | 16,000 |
| Compressive Strength, 10% Def., 73°F | D695 | psi | 24,000 |
| Compressive Modulus of Elasticity, 73°F | D695 | psi | 475,000 |
| Hardness, Rockwell, Scale as noted, 73°F | D785 | E80 (M120) | |
| Izod Impact (notched), 73°F | D256 Type A | ft-lb/in | 2.0 |
| Coefficient of Friction (Dry vs Steel) Dynamic | PTM55007 | 0.35 | |
| Limiting PV, 73°F | PTM55007 | psi-fpm | 12,500 |
| k (wear) factor | PTM55010 | 50 | |
| Thermal | |||
| Coefficient of linear Thermal Expansion | E-831(TMA) | in/in/°F | 1.70x10ˆ-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-ft²°F) | 1.80 | |
| Electrical | |||
| Dielectric Strength, Short Term | D149(2) | Volts/mil | 580 |
| Surface Resistivity | EOS/ESD S11.11 | Ohm/square | >10ˆ16 |
| Dielectric Constant, 10ˆ6 Hz | D150(2) | 4.20 | |
| Dissipation Factor, 10ˆ6 Hz | D150(2) | 0.026 | |
| Chemical | |||
| Acids, Weak, 73°F/23°C, acetic acid, dilute hydrochloric or sulfuric | Acceptable Service | ||
| Acids, Strong, 73°F/23°C, conc. hydrochloric or sulfuric | Limited Service | ||
| Alkalies, Weak, 73°F/23°C, dilute ammonia or sodium hydroxide | Limited Service | ||
| Alkalies, Strong, 73°F/23°C, conc. ammonia or sodium hydroxide | Unacceptable | ||
| Hydrocarbons-Aromatic, 73°F/23°C, benzene, toluene | Acceptable Service | ||
| Hydrocarbons-Aliphatic, 73°F/23°C, gasoline, hexane, grease | Acceptable Service | ||
| Ketones, Esters, 73°F/23°C, acetone, methyl ethyl ketone | Acceptable Service | ||
| Ethers, 73°F/23°C, diethyl ether, tetrahydrofuran | Acceptable Service | ||
| Chlorinated Solvents, 73°F/23°C, methylene chloride, chloroform | Acceptable Service | ||
| Alcohols, 73°F/23°C, methanol, ethanol, anti-freeze | Acceptable Service | ||
| Inorganic Salt Solutions, 73°F/23°C, sodium chloride, potassium cyanate | Acceptable Service | ||
| Continuous Sunlight, 73°F/23°C | 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, 73°F | D792 | 1.45 | |
| Tensile Strength, 73°F | D638 | psi | 12,000 |
| Tensile Modulus of Elasticity, 73°F | D638 | psi | 900,000 |
| Elongation, 73°F | D638 | % | 3.0 |
| Flexural Strength, 73°F | D790 | psi | 23,000 |
| Flexural Modulus, 73°F | D790 | psi | 800,000 |
| Shear Strength, 73°F | D732 | psi | 16,400 |
| Compressive Strength, 10% Def., 73°F | D695 | psi | 22,000 |
| Compressive Modulus of Elasticity, 73°F | D695 | psi | 950,000 |
| Hardness, Rockwell, Scale as noted, 73°F | D785 | E70 (M106) | |
| Izod Impact (notched), 73°F | D256 Type A | ft-lb/in | 0.8 |
| Coefficient of Friction (Dry vs Steel) Dynamic | PTM55007 | 0.20 | |
| Limiting PV, 73°F | PTM55007 | psi-fpm | 22,500 |
| k (wear) factor | PTM55010 | 10 | |
| Thermal | |||
| Coefficient of linear Thermal Expansion | E-831(TMA) | in/in/°F | 1.40x10ˆ-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-ft²°F) | 3.70 | |
| Electrical | |||
| Surface Resistivity | EOS/ESD S11.11 | Ohm/square | >10ˆ15 |
| Dielectric Constant, 10ˆ6 Hz | D150(2) | 6.00 | |
| Dissipation Factor, 10ˆ6 Hz | D150(2) | 0.037 | |
| Chemical | |||
| Acids, Weak, 73°F/23°C, acetic acid, dilute hydrochloric or sulfuric | Acceptable Service | ||
| Acids, Strong, 73°F/23°C, conc. hydrochloric or sulfuric | Limited Service | ||
| Alkalies, Weak, 73°F/23°C, dilute ammonia or sodium hydroxide | Limited Service | ||
| Alkalies, Strong, 73°F/23°C, conc. ammonia or sodium hydroxide | Unacceptable | ||
| Hydrocarbons-Aromatic, 73°F/23°C, benzene, toluene | Acceptable Service | ||
| Hydrocarbons-Aliphatic, 73°F/23°C, gasoline, hexane, grease | Acceptable Service | ||
| Ketones, Esters, 73°F/23°C, acetone, methyl ethyl ketone | Acceptable Service | ||
| Ethers, 73°F/23°C, diethyl ether, tetrahydrofuran | Acceptable Service | ||
| Chlorinated Solvents, 73°F/23°C, methylene chloride, chloroform | Acceptable Service | ||
| Alcohols, 73°F/23°C, methanol, ethanol, anti-freeze | Acceptable Service | ||
| Inorganic Salt Solutions, 73°F/23°C, sodium chloride, potassium cyanate | Acceptable Service | ||
| Continuous Sunlight, 73°F/23°C | 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.