Acetal 500 AF PTFE

Acetal 500 AF PTFE


What is the Material: Acetal 500 AF PTFE is a semi-crystalline material and it is a modified acetal homopolymer filled with PTFE (Teflon) fibers.

Key Material Features: This material is beneficial in applications requiring wear resistance, low friction, reduced stick-slip, and dimensional stability. This material is very similar to acetal 100 AF, but it is more crystalline in structure which provides higher strength, modulus, and improved machining characteristics.

Other Considerations: It has chemical resistance very similar to acetal homopolymer. Compared to UHMW-PE, this material has higher compressive and tensile strength and a similarly low coefficient of friction. Nylon materials typically perform better than acetal materials in abrasive wear applications.


Property Value Typical ASTM Test
Chemical Designation (POM-H) Acetal Homopolymer
Trade Names (®, ™) Delrin AF Blend, Sustarin H Delrin AF
Filler PTFE Fibers
Color Brown
Density (g/cm^3) 1.50 D 792


Property Value Typical ASTM Test
Modulus of Elasticity (Tensile Test) (psi) 475000 D 638
Tensile Strength at Yield (psi) 7200 D 638
Elongation at Yield (%) 4 D 638
Flexural Strength (psi) 13000 D 790
Modulus of Elasticity (Flexural Test) (psi) 495000 D 790
Compression Strength: 10% Strain (psi) 14000 D 695
Compression Strength: 1% Strain (psi) 1500 D 695
Compression Modulus (psi) 200000 D 695
Impact Strength (Izod) (ft-lbs/in) 0.80 D 256
Hardness (M) 87 D 785


Property Value Typical ASTM Test
Melting Point (°F) 347 D 3418
Service Temperature Continuous (°F) 185
Service Temperature Intermittent (°F) 300


Property Value Typical ASTM Test
Moisture Absorption (%) (24 Hours) 0.18 D 570
The data stated are typical values intended for reference and comparison purposes only. The data should not be used as a basis for design specifications or quality control. The information is provided as a guide to the best of our knowledge and given without obligation or liability. Testing under individual application circumstances is recommended.