Looking for High-Performance Plastic Components?
Torlon 4503 is compression molded polyamide-imide offers exceptional properties for insulating components. It is similar in composition to Torlon 4203 which is the extruded grade of unfilled Torlon. When a component requires larger stock and cannot be extruded, 4503 is utilized. Torlon is known for its high temperature resistance, dimensional stability and machinability.
Machined with standard machining techniques, special care must be taken however to achieve close tolerances.
Annealing Torlon can be critical to the final properties of a component. Post-curing torlon removes all moisture in the part and must be done with care to reduce bubbling or warping the final components. Once post-cured, PAI components will have superior mechanical properties to uncured parts.
| Specification | Test | Value | Units |
| Specific Gravity, 73°F | D792 | 1.4 | |
| Tensile Strength @ Yield, 73°F | D638 | 18000 | psi |
| Tensile Modulus of Elasticity, 73°F | D638 | 500000 | psi |
| Tensile Elongation (at break), 73°F | D638 | 3 | % |
| Flexural Strength, 73°F | D790 | 18000 | psi |
| Flexural Modulus of Elasticity | D790 | 560000 | psi |
| Shear Strength, 73°F | D732 | 16400 | psi |
| Compressive Strength - Ultimate | psi | ||
| Compressive Strength at 2% Deformation | D695 | 10000 | psi |
| Compressive Strength at 10% Deformation | D695 | 22000 | psi |
| Deformation Under Load | % | ||
| Compressive Modulus of Elasticity, 73°F | D695 | 950000 | |
| Compressive Strength ⊥ to Laminate (Modulus) | psi | ||
| Compressive Strength ⊥ to Laminate (Yield) | psi | ||
| Compressive Strength ⊥ to Laminate (Ultimate) | 10000 | psi | |
| Hardness, Durometer (Shore "D" scale) | D2240 | ||
| Hardness, Rockwell (Scale as noted) | D785 | M106 | Rockwell M |
| Izod Impact, Notched @ 73°F | D256 Type A | 0.8 | ft.lbs/in. of notch |
| Coefficient of Friction (Dry vs Steel) Static | PTM55007 | 0.25 | |
| Coefficient of Friction (Dry vs Steel) Dynamic | PTM55007 | 0.2 | |
| Maximum Static Bearing Load (P) | PTM55007 | 1000 | psi |
| Maximum Unlubricated No Load Bearing Velocity (V) | PTM55007 | 900 | ft/minute |
| Maximum Limiting PV (Unlubricated) | PTM55007 | 50000 | psi x ft/min. |
| Wear Factor "K" x 10-10 | PTM55010 | 300 | Cubic in.-min/ft.lbs.hr |
| Sand Wheel Wear/Abrasion Test | UHMW=100 | ||
| Minimum Mating Surface Hardness | Rockwell (Brinnell) | ||
| Coefficient of Linear Thermal Expansion | E-831(TMA) | 1.4 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion // to Laminates | E-831(TMA) | 1.4 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion I to Laminates | E-831(TMA) | 1.4 | in/in/°F x 10-5 |
| Softening Point | °F | ||
| Heat Deflection Temperature 264 psi | D648 | 534 | °F |
| Embrittlement Temperature | °F Min. | ||
| Continuous Service Temperature in Air | 500 | °F Max. | |
| Short Term Service Temperature | 500 | °F Max. | |
| Tg-Glass Transition (Amorphous) | D3418 | 527 | °F |
| Melting Point (Crystalline Peak) | D3418 | N/A | °F |
| Thermal Conductivity | F433 | 3.7 | BTU-in/(hr/ft2°F) |
| Dielectric Strength Short Term | D149 | Volts/mil | |
| Volume Resistivity | D257 | ohm/cm | |
| Surface Resistivity | D257 | >1013 | ohm/cm |
| Dielectric Constant, 106 Hz | D150 | 5.4 | |
| Dissipation Factor, 106 Hz | D150 | 0.037 | |
| Flammability @ 3.1mm(1/8 in.) UL94 | UL94 | V-O | |
| Arc Resistance | seconds | ||
| Water Absorption, Immersion 24 Hours | D570 (2) | 0.4 | % |
| Water Absorption, Immersion Saturation | D570 (2) | 1.5 | % |
| Machinability Rating | 3 | 1=easy, 10=difficult | |
| Rod Diameter Availability (Off the Shelf) | 1 | 3 | inches |
| Sheet Thickness Availability (Off the Shelf) | 0.25 | 1 | inches |