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Duratron® T4503 PAI
Electrical Grade PolyAmide-Imide Specifications

904 West 6th Street, Shiner, Texas 77984 USA
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail:


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click to resize photo Duratron ® T PAI is the highest performing melt processable plastic. It has superior resistance to elevated temperatures. It is capable of performing under severe stress conditions at continuous temperatures to 500°F (260°C). Parts machined from Duratron ® T PAI stock shapes provide greater compressive strength and higher impact resistance than most advanced engineering plastics. Its extremely low coefficient of linear thermal expansion and high creep resistance deliver excellent dimensional stability over its entire use range. PAI is an amorphous material with a Tg (glass transition temperature) of 537°F (280°C).

Duratron T4503 PAI (Compression Molded)

Duratron ® T4503 compression molded PAI offers excellent compressive strength and high elongation properties. It also provides electrical insulation and exceptional impact strength. This grade is commonly used for electrical connectors and insulators due to its high dielectric strength.

Duratron ® T4503 compression molded PAI is the same formulation as Duratron T4203 PAI, but has been made into stock shapes using a different manufacturing process. The resulting material is similar to Duratron T4203 PAI, but has slightly different mechanical properties (see datasheet below).

Compression-molded Duratron ® T4503 PAI is typically available only in larger diameter rods (in short lengths), thicker sheets, and large (but short length) tubes. Check with us for availability of Duratron T4503 PAI in the size you need.

See also Duratron T4203 Extruded PAI specification for comparison, or these two electrical grades side-by-side here.

For a complete overview of Quadrant's Duratron product family, including other high-performance engineering plastics, see this page.
see also datasheets for:
Torlon | Electrical Grade Torlon | Bearing Grade Torlon | Glass-Filled Torlon | Carbon-Filled Torlon


ASTM or UL test Property Duratron® T4503
D792 Density (lb/in³)
D570 Water Absorption, 24 hrs (%) 0.35
D570 Water Absorption, Saturation (%) 1.7
D638 Tensile Strength (psi) 18,000
D638 Tensile Modulus (psi) 500,000
D638 Tensile Elongation at Break (%) 5
D790 Flexural Strength (psi) 24,000
D790 Flexural Modulus (psi) 600,000
D732 Shear Strength (psi) -
D695 Compressive Strength (psi) 18,000
D695 Compressive Modulus (psi) 350,000
D785 Hardness, Rockwell E80(M119)
D256 IZOD Notched Impact (ft-lb/in) 1.5
PTM 55007 Coefficient of Friction (Dry vs. Steel) Dynamic 0.3
PTM 55007 Limiting PV (4:1 Safety Factor) (ft-lb-in2-min 7,500
PTM 55010 Wear Factor "k" x 10-10(in3-min/ft-lb-hr > 1,000
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
D648 Heat Deflection Temp (°F / °C)
at 264 psi

532 / 278
D3418 Glass Transition Temp (°F / °C) 527 / 275
- Max Operating Temp (°F / °C) 500 / 260
C177 Thermal Conductivity
(x 10-4 cal/cm-sec-°C)

UL94 Flammability Rating V-0
D149 Dielectric Strength (V/mil) short time, 1/8" thick 600
D150 Dielectric Constant at 1 MHz 4.2
D150 Dissipation Factor at 1 MHz 0.031
EOS/ESD S11.11 Surface Resistivity (ohms/square) > 1013

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.
DURATRON is a registered trademark of Quadrant Engineering Plastic Products.
Torlon is a registered trademark of SABIC Advanced Polmers (formerly GE Plastics)

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Boedeker Plastics, Inc.
904 West 6th Street, Shiner, Texas 77984 USA
USA TOLLFREE : 1-800-444-3485
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail:

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