Acetal | EA
Acetal, Unfilled – General purpose acetal for use in the applications called out above.
Acetal, PTFE Filled – For use in moving parts in which low friction and long wear life are important, having excellent sliding and frictional properties. Blends can operate at higher speeds while exhibiting reduced wear. These bearings are also essentially free of slip-stick behavior because the static and dynamic coefficient of friction are closer than with most plastics.
Technical Information, test data and advice provided by Eclipse Engineering are based on information and tests we believe to be reliable and are intended for persons with knowledge and technical skill sufficient to analyze test types and apply adequate safety factors for the given application. Because actual application conditions vary widely, these values are intended for comparitive purposes only and the suitability of this material is ultimately left to the end user.
On a cost basis, EA036 should be considered a first choice when parts requiring high stiffness and excellent dimensional stability are required. Although EA036 will not degrade at temperatures as high as 300°F (149°C), it should be specified for continuous use below 200°F (93°C). In that range, EA036 offers similar performance to higher priced polymers making it ideal for seal carriers, back-up rings, installation tools, spacers and lantern rings.
EA036 may be specified for FDA, USDA, NSF, Canada AG and 3-A Dairy compliant components. EA036 is easily machinable, but can be injection molded as well making it a candidate when considering a material that can be prototyped at low cost then ramped up to high volume production.
|Strength at Break||ASTM D638||9,500||psi|
|Elongation at Break||ASTM D638||30||%|
When exposed to dynamic forces, EA037 is a good upgrade to consider over EA036. With the addition of PTFE dispersed in the base acetal, the dynamic friction is nearly half the unfilled resin. This eliminates stick -slip and increases wear resistance allowing application into wear components such as bushings and wear rings.
|Strength at Break||ASTM D638||8,000||psi|
|Elongation at Break||ASTM D638||15||%|