Looking for High-Performance Plastic Components?
Delrin® AF, Delrin® 100AF and Delrin® AF Blend belong to a family of PTFE filled DuPont acetal homopolymers. DuPont Delrin® is a popular acetal homopolymer brand name and the most commonly used acetal homopolymer. They are a unique subset of thermoplastic materials designed for use as bearing and wear components where low friction and long wear life are important. They are a combination of PTFE fibers (or PTFE powder) uniformly dispersed in Delrin® acetal resin. This combination offers better wear characteristics than unfilled Delrin® due to the presence of PTFE acting as a solid lubricant. Bearings made of Delrin® AF can operate at higher speeds while extending life to the component. Delrin® AF retains 90% of the strength that is inherent in unmodified Delrin®. Although there are other variations of PTFE filled acetal available, Delrin® AF Blend is widely available and generally speaking, less expensive.
Available in sheet, rod and tubing, it is easily machined with standard metal working equipment. Tolerances of +/-.001 can be achieved with experience.
Delrin® is a registered trademark of Dupont.
| Specification | Test | Value | Units |
| Specific Gravity, 73°F | D792 | 1.5 | - |
| Tensile Strength @ Yield, 73°F | D638 | 8,000 | psi |
| Tensile Modulus of Elasticity, 73°F | D638 | 435,000 | psi |
| Tensile Elongation (at break), 73°F | D638 | 15 | % |
| Flexural Strength, 73°F | D790 | 12,000 | psi |
| Flexural Modulus of Elasticity | D790 | 445,000 | psi |
| Shear Strength, 73°F | D732 | 7,600 | psi |
| Compressive Strength - Ultimate | 1,000 | psi | |
| Compressive Strength at 2% Deformation | D695 | 1,000 | psi |
| Compressive Strength at 10% Deformation | D695 | 16,000 | psi |
| Deformation Under Load | < 2 | % | |
| Compressive Modulus of Elasticity, 73°F | D695 | 350,000 | |
| 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 | D83 | |
| Hardness, Rockwell (Scale as noted) | D785 | 115 | Rockwell R |
| Izod Impact, Notched @ 73°F | D256 Type A | 0.7 | ft.lbs/in. of notch |
| Coefficient of Friction (Dry vs Steel) Static | PTM 55007 | 0.20 | |
| Coefficient of Friction (Dry vs Steel) Dynamic | PTM 55007 | 0.19 | |
| Maximum Static Bearing Load (P) | PTM 55007 | 1,000 | psi |
| Maximum Unlubricated No Load Bearing Velocity (V) | PTM 55007 | 100 | ft/minute |
| Maximum Limiting PV (Unlubricated) | PTM 55007 | 5,000 | psi x ft/min. |
| Wear Factor "K" x 10-10 | PTM 55010 | 60 | Cubic in.-min/ft.lbs.hr |
| Sand Wheel Wear/Abrasion Test | 40 | UHMW=100 | |
| Minimum Mating Surface Hardness | 20 | Rockwell (Brinnell) | |
| Coefficient of Linear Thermal Expansion | E-831 (TMA) | 5.0 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion // to Laminates | E-831 (TMA) | 5.0 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion I to Laminates | E-831 (TMA) | 5.0 | in/in/°F x 10-5 |
| Softening Point | 244 | °F | |
| Heat Deflection Temperature 264 psi | D648 | 244 | °F |
| Embrittlement Temperature | °F Min. | ||
| Continuous Service Temperature in Air | 180 | °F Max. | |
| Short Term Service Temperature | 212 | °F Max. | |
| Tg-Glass Transition (Amorphous) | D3418 | °F | |
| Melting Point (Crystalline) Peak | D3418 | 347 | °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 | 3.1 | |
| Dissipation Factor, 106 Hz | D150 | 0.010 | |
| Flammability @ 3.1mm(1/8 in.) UL94 | UL94 | HB | |
| Arc Resistance | seconds | ||
| Water Absorption, Immersion 24 Hours | D570 (2) | 0.2 | % |
| Water Absorption, Immersion Saturation | D570 (2) | 1.0 | % |
| Machinability Rating | 1 | 1=easy, 10=difficult | |
| Rod Diameter Availability (Off the Shelf) | .125 | 6.0 | inches |
| Sheet Thickness Availability (Off the Shelf) | .250 | 3.0 | inches |