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