Delrin AF (13% PTFE Filled)
Material Type
Plastic
Material Name
Delrin AF (13% PTFE Filled)
Process Compatibility
CNC Machining, Injection Molding
Delrin AF (13% PTFE Filled) in CNC Machining and Injection Molding
Delrin AF (13% PTFE Filled) is a type of plastic material that combines the properties of Acetal (polyoxymethylene) with the added benefit of polytetrafluoroethylene (PTFE) filler.
Delrin is a brand name for acetal resin, and "AF" stands for "Acetal with Fillers." The addition of "AF" indicates that the acetal material has been filled or reinforced with a certain percentage of polytetrafluoroethylene (PTFE), commonly known by the brand name Teflon. The PTFE filler gives specific properties to the acetal material, such as improved lubricity, reduced friction, enhanced wear resistance, strength, toughness, dimensional stability, and machinability. The percentage value (in this case, 13% PTFE filled) indicates the amount of PTFE present in the composite material.
This material has low friction, excellent lubricity, and good wear resistance. Delrin AF is machined at higher speeds than unfilled acetal. We start with moderate cutting speeds and adjust based on the machining conditions to avoid excessive heat. It generally doesn't require coolant during machining, but using an air blast or a dry-cutting process is common. PTFE provides some natural lubricity to the material.
Properties Table of Delrin AF (13% PTFE Filled)
| MECHANICAL PROPERTIES | |
|---|---|
| Ultimate Tensile Strength(UTS) | 62 MPa |
| Yield Strength(0.2% offset) | 48 MPa |
| Hardness | 111 Rockwell M |
| Flexural and Impact Strength | 91 MPa(Flexural) |
| Modulus of Elasticity | 2.3 GPa |
| Elongation at Break | 35% |
| Creep and Wear Resistance | Excellent |
| Machinability and Moldability | Excellent |
| Physical Properties | |
| UV Resistance | Good |
| Ductility and Flexibility | Low |
| Density and Weight | 1.5 g/cm³ |
| Chemical Resistance | Good |
| Porosity | Low |
| Thermal Properties | |
| Maximum Service Temperature | 120°C |
| Thermal Expansion Coefficient | 80-90 x 10^-6/°C |
| Thermal Conductivity | 0.24 W/(m·°C) |
| Electrical Properties | |
| Electrical Resistivity | 10^14-10^15 Ω·cm |
| ESD Safety | Good |
Basic Knowledge of Delrin AF (13% PTFE Filled)
What is Delrin AF (13% PTFE Filled)?
Delrin AF (13% PTFE Filled) is a specialized thermoplastic material formed by combining acetal resin (POM) with polytetrafluoroethylene (PTFE or Teflon), with the PTFE content being 13%. This composition results in a material known for its low friction, high wear resistance, and excellent chemical resistance. It is particularly useful for moving parts requiring low friction and prolonged wear life. PTFE Filled Acetal maintains 90% of the mechanical strength of unfilled acetal homopolymer, exhibiting minimal friction and virtually no "slip-stick" behavior.
Advantages of Delrin AF (13% PTFE Filled)
- Low friction coefficient
- Excellent wear resistance
- High stiffness and strength
- Good dimensional stability
- Chemical resistance
- Low moisture absorption
- Reduced noise and vibration
- FDA compliant for certain applications
- Machinability and ease of fabrication
Applications of Delrin AF (13% PTFE Filled)
- Bearings
- Gears
- Bushings
- Seals and gaskets
- Electrical connectors
- Medical device components
- Automotive parts
- Aerospace components
- Food processing equipment parts
Machining Delrin AF (13% PTFE Filled) Buying FAQs
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