Poly-Texx® XP-99 is a High-Performance engineering thermoplastic. This semi-crystalline material has a balance of high temperature tolerance, superior mechanical properties, chemical and steam resistance, superior tribological (wear) properties and low friction. Its PV capability exceeds 100,000, making it one of the most capable plane bearing materials available. It is available in sheet, rod and a limited number of tubing sizes. It can be machined with conventional metal working equipment to tolerances of +/-.001″ with experience. Poly-Texx® XP99 is dimensionally stable in high PV and chemically aggressive applications.
| Specification | Test | Value | Units |
| Specific Gravity, 73°F | D792 | 1.44 | - |
| Tensile Strength @ Yield, 73°F | D638 | 9,700 | psi |
| Tensile Modulus of Elasticity, 73°F | D638 | psi | |
| Tensile Elongation (at break), 73°F | D638 | 1.4 | % |
| Flexural Strength, 73°F | D790 | 14,760 | psi |
| Flexural Modulus of Elasticity | D790 | 1,100,000 | psi |
| Shear Strength, 73°F | D732 | 10,300 | psi |
| Compressive Strength - Ultimate | 6,000 | psi | |
| Compressive Strength at 2% Deformation | D695 | 10,000 | psi |
| Compressive Strength at 10% Deformation | D695 | 21,200 | psi |
| Deformation Under Load | 2 | % | |
| Compressive Modulus of Elasticity, 73°F | D695 | 500,000 | |
| Compressive Strength ⊥ to Laminate (Modulus) | psi | ||
| Compressive Strength ⊥ to Laminate (Yield) | psi | ||
| Compressive Strength ⊥ to Laminate (Ultimate) | psi | ||
| Hardness, Durometer (Shore "D" scale) | D2240 | 88 | |
| Hardness, Rockwell (Scale as noted) | D785 | Rockwell M | |
| Izod Impact, Notched @ 73°F | D256 Type A | .6 | ft.lbs/in. of notch |
| Coefficient of Friction (Dry vs Steel) Static | PTM55007 | 0.2 | |
| Coefficient of Friction (Dry vs Steel) Dynamic | PTM55007 | .15 | |
| Maximum Static Bearing Load (P) (with Factor of Safety | PTM55007 | 10,000 | psi |
| Maximum Unlubricated No Load Bearing Velocity (V) | PTM55007 | 600 | ft/minute |
| Maximum Limiting PV (Unlubricated) | PTM55007 | 100,000 | psi x ft/min. |
| Wear Factor "K" x 10-10 | PTM55010 | Cubic in.-min/ft.lbs.hr | |
| Sand Wheel Wear/Abrasion Test | UHMW=100 | ||
| Minimum Mating Surface Hardness | 25 | Rockwell (Brinnell) | |
| Coefficient of Linear Thermal Expansion | E-831(TMA) | 1.7 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion (Under 200 degrees F) | E-831(TMA) | 1.7 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion (Over 200 degrees F.) | E-831(TMA) | 3.11 | in/in/°F x 10-5 |
| Softening Point | °F | ||
| Heat Deflection Temperature 264 psi | D648 | >455 | °F |
| Embrittlement Temperature | °F Min. | ||
| Continuous Service Temperature in Air | 464 | °F Max. | |
| Short Term Service Temperature | 480 | °F Max. | |
| Tg-Glass Transition (Amorphous) | D3418 | 289 | °F |
| Melting Point (Crystalline) Peak | D3418 | 649 | °F |
| Thermal Conductivity | F433 | 2.2 | BTU-in/(hr/ft2°F) |
| Dielectric Strength Short Term | D149 | Volts/mil | |
| Volume Resistivity | D257 | 1.2x1010 | ohm/cm |
| Surface Resistivity | D257 | <104 | ohm/cm |
| Dielectric Constant, 106 Hz | D150 | ||
| Dissipation Factor, 106 Hz | D150 | ||
| Flammability @ 3.1mm(1/8 in.) UL94 | UL94 | V-0 | |
| Arc Resistance | seconds | ||
| Water Absorption, Immersion 24 Hours | D570 (2) | 0.07 | % |
| Water Absorption, Immersion Saturation | D570 (2) | 0.3 | % |
| Machinability Rating | 5 | 1=easy, 10=difficult | |
| Rod Diameter Availability (Off the Shelf) | .75-2.0 | inches | |
| Sheet Thickness Availability (Off the Shelf) | .250-1.0 | inches |