Ertacetal® / Acetron®

Ertacetal C (POM-C) is Quadrant's copolymer acetal grade. Next to the standard natural grade, there is also a series of special colors available all showing a FDA food contact compliant composition. The acetal copolymer is more resistant to hydrolysis, strong alkalis and thermal-oxidative degradation than the acetal homopolymer.

Ertacetal C natural, blue 50 and black 90 are available in various shapes as "Food Grades".

Product Overview

High mechanical strength, stiffness and hardness
Excellent resilience
Good creep resistance
High impact strength, even at low temperatures
Very good dimensional stability (low water absorption)
Good sliding properties and wear resistance
Excellent machinability
Good electrical insulating and dielectric properties
Physiologically inert (most grades are suitable for food contact)
Not self-extinguishing

Engineering notes.

In general, acetals do not perform as well in abrasive wear applications as nylons. Compensation for moisture related growth generally allows Nylatron® nylons to be used for wet, abrasive applications. If your application requires dimensional consistency in an abrasive, high humidity or submerged environment, Ertalyte® PET-P will often offer improved performance.

Ertacetal H (POM-H) is Quadrant's homopolymer acetal grade. It offers a higher mechanical strength, stiffness, hardness and creep resistance as well as a lower thermal expansion rate and often also a better wear resistance than the acetal copolymer.

Proven Application

Structural keels

Delrin* acetal delivers outstanding fatigue and impact resistance in this continuously loaded structural keel for a prosthetic device. (Prior materials: Nylon, Elastomer)

Ertacetal H-TF (POM-H + PTFE) is a Delrin^® AF Blend, a combination of PTFE fibers evenly dispersed in a Delrin acetal resin. Much of the strength that is inherent in Ertacetal H is retained. Some properties change due to the addition of PTFE fiber which is softer, less stiff and more slippery than virgin acetal resin. Compared to Ertacetal C and H, this material offers superior sliding properties. Bearings made of Ertacetal H-TF show low friction, long wear and are essentially free of stick-slip behaviour.

Ertacetal® C ELS is Quadrant's copolymer conductive acetal grade. This grade is specifically developed for the use in applications where the characteristics of POM C are required, but with the added benefit of good electrical conductivity, such as in electrical applications and explosion sensitive areas; for ATEX cases, the conductivity shall be <10⁹ Ohm (surface resistivity measurement).