Nylon 6/6 (Polyamide)
Nylon 6/6 is the extrusion grade of the Nylon family of polymers. It has been commercially available since 1948; developed by Dupont. Nylon is well known for excellent toughness, low coefficient of friction and good abrasion resistance making it an ideal replacement for a wide variety of materials from metal to rubber. Using Nylon 6/6 reduces lubrication requirements, eliminates galling, and corrosion. Low cost combined with improved wear resistance makes Nylon 6/6 an excellent choice for many bearing and wear components.
Nylon 6/6 is easily fabricated into precision parts using standard metalworking equipment. Tolerances of +/-.002 are easily achieved with experience. It is available in a broad variety of shapes and sizes. Rod stock normally comes ground to size making turning easier. Both extruded and cast grades of nylon grades are available to match specific application demands. There are many filled versions commercially available to accommodate specific applications. Solid lubricants such as carbon graphite, PTFE Teflon®, and MoS2 provide lower friction, while reinforcing agent such as Kevlar®, carbon fiber, and glass provide higher levels of strength and dimensional stability.
| Specification | Test | Value | Units |
| Specific Gravity, 73°F | D792 | 1.15 | Lb/in.3 |
| Tensile Strength @ Yield, 73°F | D638 | 11,500 | psi |
| Tensile Modulus of Elasticity, 73°F | D638 | 425,000 | psi |
| Tensile Elongation (at break), 73°F | D638 | 50 | % |
| Flexural Strength, 73°F | D790 | 15,000 | psi |
| Flexural Modulus of Elasticity | D790 | 450,000 | psi |
| Shear Strength, 73°F | D732 | 10,000 | psi |
| Compressive Strength – Ultimate | 300 | psi | |
| Compressive Strength at 2% Deformation | D695 | 300 | psi |
| Compressive Strength at 10% Deformation | D695 | 1,000 | psi |
| Deformation Under Load | % | ||
| Compressive Modulus of Elasticity, 73°F | D695 | 420,000 | |
| Compressive Strength ⊥ to Laminate (Modulus) | psi | ||
| Compressive Strength ⊥ to Laminate (Yield) | 1,000 | psi | |
| Compressive Strength ⊥ to Laminate (Ultimate) | 1,000 | psi | |
| Hardness, Durometer (Shore “D” scale) | D2240 | D80 | |
| Hardness, Rockwell (Scale as noted) | D785 | M85 (R115) | Rockwell M |
| Izod Impact, Notched @ 73°F | D256 Type A | 0.6 | ft.lbs/in. of notch |
| Coefficient of Friction (Dry vs Steel) Static | PTM55007 | 0.3 | |
| Coefficient of Friction (Dry vs Steel) Dynamic | PTM55007 | 0.25 | |
| Maximum Static Bearing Load (P) | PTM55007 | 300 | psi |
| Maximum Unlubricated No Load Bearing Velocity (V) | PTM55007 | 60 | ft/minute |
| Maximum Limiting PV (Unlubricated) | PTM55007 | 2,700 | psi x ft/min. |
| Wear Factor “K” x 10-10 | PTM55010 | 80 | Cubic in.-min/ft.lbs.hr |
| Sand Wheel Wear/Abrasion Test | 75 | UHMW=100 | |
| Minimum Mating Surface Hardness | 20 | Rockwell (Brinnell) | |
| Coefficient of Linear Thermal Expansion | E-831(TMA) | 5.50 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion // to Laminates | E-831(TMA) | 5.50 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion I to Laminates | E-831(TMA) | 5.50 | in/in/°F x 10-5 |
| Softening Point | 200 | °F | |
| Heat Deflection Temperature 264 psi | D648 | 200 | °F |
| Embrittlement Temperature | °F Min. | ||
| Continuous Service Temperature in Air | 210 | °F Max. | |
| Short Term Service Temperature | 210 | °F Max. | |
| Tg-Glass Transition (Amorphous) | D3418 | °F | |
| Melting Point (Crystalline) Peak | D3418 | 500 | °F |
| Thermal Conductivity | F433 | 1.7 | 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 | 3.6 | |
| Dissipation Factor, 106 Hz | D150 | 0.02 | |
| Flammability @ 3.1mm(1/8 in.) UL94 | UL94 | V-2 | |
| Arc Resistance | seconds | ||
| Water Absorption, Immersion 24 Hours | D570 (2) | 0.3 | % |
| Water Absorption, Immersion Saturation | D570 (2) | 7.0 | % |
| Machinability Rating | 2 | 1=easy, 10=difficult | |
| Rod Diameter Availability (Off the Shelf) | .25-6.0 | inches | |
| Sheet Thickness Availability (Off the Shelf) | .030-3.0 | inches |
| Characteristics / Attributes | Excellent Toughness / Easily Machined / Low Cost |
