# Poly-Texx® PVX

**Poly-Texx® PVX** is an ultra high-performance engineering thermoplastic material. This semi-crystalline bearing grade PEEK (Polyetheretherketone) is enhanced with carbon fiber, graphite and PTFE. It boasts a balance of high temperature, outstanding mechanical properties, chemical and steam resistance. The combination of superior tribological (wear) properties and low friction, makes it one of the most capable bearing materials available. It can handle hostile outdoor environments, UV exposure, wet and continuous steam sterilizations. It is capable of environments where thermal cycling, high temperature water or steam where most polymer systems degrade.

**Poly-Texx® PVX** is a self-lubricating bearing material whose key characteristics are high compressive strength, low friction, low coefficient of thermal expansion, superior bearing and wear properties, with superior resistance to steam and water.

Specification |
Test |
Value |
Units |

Specific Gravity, 73°F | D792 | 1.48 | – |

Tensile Strength @ Yield, 73°F | D638 | 18,800 | psi |

Tensile Modulus of Elasticity, 73°F | D638 | 850,000 | psi |

Tensile Elongation (at break), 73°F | D638 | 2.0 | % |

Flexural Strength, 73°F | D790 | 30,000 | psi |

Flexural Modulus of Elasticity | D790 | 1,400,000 | psi |

Shear Strength, 73°F | D732 | 10,000 | psi |

Compressive Strength – Ultimate | 16,000 | psi | |

Compressive Strength at 2% Deformation | D695 | 16,500 | psi |

Compressive Strength at 10% Deformation | D695 | 20,000 | psi |

Deformation Under Load | % | ||

Compressive Modulus of Elasticity, 73°F | D695 | 500,000 | |

Compressive Strength ⊥ to Laminate (Modulus) | 16,000 | psi | |

Compressive Strength ⊥ to Laminate (Yield) | 16,000 | psi | |

Compressive Strength ⊥ to Laminate (Ultimate) | 16,000 | psi | |

Hardness, Durometer (Shore “D” scale) | D7901 | M85 | Rockwell M |

Hardness, Rockwell (Scale as noted) | D7901 | R126 | Rockwell R |

Izod Impact, Notched @ 73°F | D256 “A” | 1.0 | ft.lbs/in. of notch |

Coefficient of Friction (Dry vs Steel) Static | PTM 55007 | 0.2 | |

Coefficient of Friction (Dry vs Steel) Dynamic | PTM 55007 | 0.1-0.15 | |

Maximum Static Bearing Load (P) | PTM 55007 | 16,000 | psi |

Maximum Unlubricated No Load Bearing Velocity (V) | PTM 55007 | 600 | ft/minute |

Maximum Limiting PV (Unlubricated) | PTM 55007 | 100,000 | psi x ft/min. |

Wear Factor “K” x 10^{-10} |
D 37 o2 | .20 | Cubic V |

Sand Wheel Wear/Abrasion Test | 50 | UHMW=100 | |

Minimum Mating Surface Hardness | 25 | Rockwell (Brinnell) | |

Coefficient of Linear Thermal Expansion | D696 | 1.2 | in/in/°F x 10^{-5} |

Coefficient of Thermal Expansion // to Laminates | D696 | 1.2 | in/in/°F x 10^{-5} |

Coefficient of Thermal Expansion I to Laminates | D696 | 1.2 | in/in/°F x 10^{-5} |

Softening Point | 530 | °F | |

Heat Deflection Temperature 264 psi | D648 | 383 | °F |

Embrittlement Temperature | Cryogenic | °F Min. | |

Continuous Service Temperature in Air | 482 | °F Max. | |

Short Term Service Temperature | 570 | °F Max. | |

Tg-Glass Transition (Amorphous) | D3418 | 289 | °F |

Melting Point (Crystalline) Peak | D3418 | 649 | °F |

Thermal Conductivity | C 177 | 1.66 | BTU-in/(hr/ft^{2}°F) |

Dielectric Strength Short Term | D149 | Volts/mil | |

Specific Volume Resistance | D257 | 3 x 10^{5} |
ohm/cm |

Surface Resistance | D257 | 5 x 10^{6} |
ohm/sq |

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) | 0.05 | % |

Water Absorption, Immersion Saturation | D570 (2) | 0.3 | % |

Machinability Rating | 3 | 1=easy, 10=difficult | |

Tubing Diameter Availability (Off the Shelf) | .50 | 6.0 | inches |

Sheet Thickness Availability (Off the Shelf) | .250 | 3.0 | inches |

Characteristics / Attributes | Very High Load / Self Lubricating / Highest PV Rating |