GENERAL DESCRIPTIONTorlon ® 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 Torlon ® 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).
Torlon 4501 PAI (Compression Molded)
Torlon ® 4501 compression molded PAI is primarily used for wear and friction parts. It offers a very low expansion rate, low coefficient of friction and exhibits little or no slip-stick in use. This grade excels in severe service wear applications such as non- lubricated bearings, seals, bearing cages and reciprocating compressor parts.
Torlon ® 4501 compression molded PAI is the same formulation as extruded Torlon 4301 PAI, but has been made into stock shapes using a different manufacturing process. The resulting material is similar to 4301, but has slightly different mechanical properties. See Torlon 4301 Extruded PAI datasheet for comparison, or these two bearing grades side-by-side here.
Compression-molded Torlon ® 4501 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 4501 in the size you need. (see also Duratron T4501 PAI)
TYPICAL PROPERTIES of TORLON® 4501 PAI POLYAMIDE-IMIDE
|ASTM or UL test||Property||Torlon 4501 PAI
|D570||Water Absorption, 24 hrs (%)||0.4|
|D570||Water Absorption, Saturation (%)||1.5|
|D638||Tensile Strength (psi)||10,000|
|D638||Tensile Modulus (psi)||440,000|
|D638||Tensile Elongation at Break (%)||3.0|
|D790||Flexural Strength (psi)||20,000|
|D790||Flexural Modulus (psi)||650,000|
|D732||Shear Strength (psi)||-|
|D695||Compressive Strength (psi)||16,000|
|D695||Compressive Modulus (psi)||359,000|
|D256||IZOD Notched Impact (ft-lb/in)||0.5|
|PTM 55007||Coefficient of Friction (Dry vs. Steel) Dynamic||0.20|
|PTM 55007||Limiting PV (4:1 Safety Factor) (ft-lb-in2-min||22,500|
|PTM 55010||Wear Factor "k" x 10-10(in3-min/ft-lb-hr||4.5|
|D696||Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
|D648||Heat Deflection Temp (°F / °C)
at 264 psi
534 / 277
|D3418||Glass Transition Temp (°F / °C)||527 / 275|
|-||Max Operating Temp (°F / °C)||500 / 260|
(x 10-4 cal/cm-sec-°C)
|D149||Dielectric Strength (V/mil) short time, 1/8" thick||-|
|D150||Dielectric Constant at 1 MHz||6.0|
|D150||Dissipation Factor at 1 MHz||0.042|
|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.DURATRON is a registered trademark of Quadrant Engineering Plastic Products.
All values at 73°F (23°C) unless otherwise noted.