Acetal Balls

Acetal Balls (Delrin®), a plastic ball, is similar to nylon but slightly harder and denser. Recommended for applications where these properties and low water absorption are required.


Physical Properties

Specific Gravity 1.42
Water Absorbtion (Method A, 24hr)% 0.25
Tensile Strength at Yield, 100 psi 10.0
Elongated at Yield, % 40
Elastic Modulus In Tension, 10 to the 5th power psi 4.5
Flexural Strength in Tension, 10 to the 5th power psi 14.1
Elastic Modulus in Flexure, 10 to the 5th power psi 4.1
Compressive Strength at Yield, 1000 psi 5.2
Rockwell Hardness (Method A) M94, R120
Maximum Service Temperature in °F 185
Natural Color light tan
Color Possibilities limited
Clarity opaque


Delrin® is a registered trademark of DuPont.

The information on this web site is intended for guidance only. Since we gathered technical data from various technical sources, the actual mechanical and physical properties will vary from one lot of material to the next. Therefore, we accept no liability for deficiencies or damages arising from the use of this data, and customers should determine the suitability of a material or product by conducting practical tests under realistic conditions.