Poly-Texx® MDS
Poly-Texx® MDS is a filled polyamide (Cast Nylon® Type 6) that is abrasive resistant, strong and self-lubricating. Its main attributes are impact strength and toughness. Its natural color is dark gray to black and is UV stable. Typical applications include sleeve and flanged bearings, thrust washers and wear plates for high aggregate bearing applications. Its machinability and toughness makes it well suited for bushings, bearings, sheaves and pulleys of all sizes.
Poly-Texx® MDS is available in many shapes and sizes; it is easily machined and can be sawed, milled and turned with conventional metal working equipment. Poly-Texx® MDS is a great choice for many demanding applications. See our Technical Assistance page on our website for additional materials and information.
| Specification | Test | Value | Units |
| Specific Gravity, 73°F | D792 | 1.16 | – |
| Tensile Strength @ Yield, 73°F | D638 | 10,500 | psi |
| Tensile Modulus of Elasticity, 73°F | D638 | 400,000 | psi |
| Tensile Elongation (at break), 73°F | D638 | 30 | % |
| Flexural Strength, 73°F | D790 | 16,000 | psi |
| Flexural Modulus of Elasticity | D790 | 500,000 | psi |
| Shear Strength, 73°F | D732 | 10,500 | psi |
| Compressive Strength – Ultimate | 300 | psi | |
| Compressive Strength at 2% Deformation | D695 | 500 | psi |
| Compressive Strength at 10% Deformation | D695 | 10,000 | psi |
| Deformation Under Load | % | ||
| Compressive Modulus of Elasticity, 73°F | D695 | 400,000 | |
| Compressive Strength ⊥ to Laminate (Modulus) | 500,000 | psi | |
| Compressive Strength ⊥ to Laminate (Yield) | 300 | psi | |
| Compressive Strength ⊥ to Laminate (Ultimate) | psi | ||
| Hardness, Durometer (Shore “D” scale) | D2240 | D85 | |
| Hardness, Rockwell (Scale as noted) | D785 | R110 | Rockwell M |
| Izod Impact, Notched @ 73°F | D256 Type A | 0.5 | ft.lbs/in. of notch |
| Coefficient of Friction (Dry vs Steel) Static | PTM 55007 | 0.25 | |
| Coefficient of Friction (Dry vs Steel) Dynamic | PTM 55007 | 0.2 | |
| Maximum Static Bearing Load (P) | PTM 55007 | 300 | psi |
| Maximum Unlubricated No Load Bearing Velocity (V) | PTM 55007 | 15 | ft/minute |
| Maximum Limiting PV (Unlubricated) | PTM 55007 | 3,000 | psi x ft/min. |
| Wear Factor “K” x 10-10 | PTM 55010 | 90 | Cubic in.-min/ft.lbs.hr |
| Sand Wheel Wear/Abrasion Test | 80 | UHMW=100 | |
| Minimum Mating Surface Hardness | 20 | Rockwell (Brinnell) | |
| Coefficient of Linear Thermal Expansion | E-831 (TMA) | 3.5 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion // to Laminates | E-831 (TMA) | 3.5 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion I to Laminates | E-831 (TMA) | 3.5 | in/in/°F x 10-5 |
| Softening Point | 200 | °F | |
| Heat Deflection Temperature 264 psi | D648 | 200 | °F |
| Embrittlement Temperature | Cryogenic | °F Min. | |
| Continuous Service Temperature in Air | 200 | °F Max. | |
| Short Term Service Temperature | 220 | °F Max. | |
| Tg-Glass Transition (Amorphous) | D3418 | °F | |
| Melting Point (Crystalline) Peak | D3418 | 420 | °F |
| Thermal Conductivity | F433 | BTU-in/(hr/ft2°F) | |
| Dielectric Strength Short Term | D149 | 400 | Volts/mil |
| Volume Resistivity | D257 | >1013 | ohm/cm |
| Surface Resistivity | D257 | ohm/cm | |
| Dielectric Constant, 106 Hz | D150 | 3.7 | |
| Dissipation Factor, 106 Hz | D150 | ||
| Flammability @ 3.1mm(1/8 in.) UL94 | UL94 | HB | |
| Arc Resistance | seconds | ||
| Water Absorption, Immersion 24 Hours | D570 (2) | 0.3 | % |
| Water Absorption, Immersion Saturation | D570 (2) | 7 | % |
| Machinability Rating | 3 | 1=easy, 10=difficult | |
| Rod Diameter Availability (Off the Shelf) | .50-8.0 | inches | |
| Sheet Thickness Availability (Off the Shelf) | .030-3.0 | inches |
| Characteristics / Attributes | Excellent Toughness / Self Lubricating / Easily Machined |
