Acetal and Delrin® Rod and Sheet

This materials is…an excellent machining material – a favorite of machinists. Works like a soft brass, and has exceptional dimensional stability. It comes as a stress relieved material, however if you plan to do extensive machining, you may need to stress relieve the parts prior to final pass. Rods are machined well in lathe and mill, sheets are machined or cut in most common machine tools.

• Excellent Machining
• Low co-efficient of Friction
• Very low moisture resistance

The work horse of the mechanical plastics family, it is one of the most popular grades of material we supply. Other brand or trade names: Pomalux®, Acetron®, Ensital®, Unital®, Tecaform®, Ultraform®, Celcon®, BASF, Hostaform®, Ticona, and Dupont Delrin®. Occasionally we are asked for the difference between Acetal and HDPE – here is an explanation.

Also, here is more information on Acetal – Delrin versus ABS, for additional reference.

Acetal is available on special order in a variety of colors, medical and engineering grade Colored Acetal Rod.

The Acetal – Delrin product line is mostly produced using the Plastic Extrusion process, click here for a nice description.

Applications – Frequently used in:

• Wear and Slide machined parts from Rod and Plate
• FDA, NSF, 3-A, and USDA Compliant Machined Parts
• Easily machined parts for water / moisture environments
• Critical tolerance and dimensionally stable parts
• 185ºF Continuous Temperature Environments
• Custom formulations, PTFE – TFE Filled for wear resistance
• Rod and Rods, Sheet and Sheets for numerous applications

Acetal Sheet and Rod Specifications:
In stock we normally carry one of these resins: BASF Ultraform H4320, Kepital F10-02, or Hostaform M25. Current Certifications and Specifications used for Acetal – Delrin: FDA, USDA, NSF, ASTM D4181, ASTM D6778 and ASTM D6100. Superseded or out dated Specifications for Acetal – Delrin: L-P-392

Some reasons to choose Homopolymer vs. Copolymer
Both POM grades have very similar properties. Our clients seem to prefer the Acetal over the Homopolymer materials due to the inherent center-line porosity in the Delrin® Homo-polymer version. This means, that along the center of a rod, or the middle of a sheet, there is a band,  of area of tiny porous material. This can weaken or cause problems with a finished part, and in extreme cases you may see blow by or leakage at this center line. While Delrin® is a brand name, it is a POM Homo-polymer. The most requested and popular item we supply is the Acetal; the POM Co-polymer resin made by one of the other big resin manufacturers – like BASF or Celanese/Tacona. Both of these resins are readily available. On this website, we supply the more popular Co-Polymer by client request. If you would prefer the Delrin® brand Sheet or Rod, drop us a line, send us an email – we will be happy to ship the requested material for you. We don’t make judgments on suitability of material for your application, we just supply what you, our clients ask for. Please, just let us know ahead of time if you have a preference. Want more information on the differences see: Acetal Vs. Delrin

Still not sure Acetal/Delrin® is the proper material for your application, consult our free Plastic Materials Selection Guide.

These Properties are for evaluation purposes only. This information is not to be construed as a warranty, guarantee or assurance that you may achieve the same results. Materials made from different resin types, manufacturing techniques and manufacturers will react differently. The information should be used to compare against other materials only, and each user should make his own tests to determine suitability. No warranty as to this materials suitability are either expressed or implied.

Materials Available As

Delrin Sheet – Acetal Sheet:

.062″ – 6.0″ up to 48′ X 120″ in Natural (White) and Black (Acetal sheet thickness normally in stock: .125″, .187″, .250″, .312″, .375″,  .500″,  .625″, .750″, .875″, 1.0″,  1.250″,  1.500″, 1.750″, 2.0″, 2.250″, 2.500″, 2.750″, 3.0″, 3.250″, 3.50″, 3.750″, 4.0″, 4.50″, 5.0″ and larger)

Delrin AF Sheet:

.062″ – 3.0″ thick in 24″ X 48″, brown in color

Delrin AF Rod:

.250″ – 10″ diameter rod in up to 120″ lengths, brown in color

Film:

.005″ – .062″ up to 24″ wide in Natural (White) and Black (minimums may apply)

Acetal Rod and Rods:

.125″ – 10″ diameter in Natural (White) and Black up to 120″ lengths

For Colored Acetal – Delrin Rod Read Here.

(Acetal Rod diameters normally in stock: .125″, .187″, .250″, .312″, .375″, .437″,  .500″, .562″, .625″, .750″, .875″, 1.0″, 1.125″, 1.250″, 1.375″, 1.500″, 1.625″, 1.750″, 2.0″, 2.250″, 2.500″, 2.750″, 3.0″, 3.250″, 3.50″, 3.750″, 4.0″, 4.50″, 5.0″ and many more)

Special Formulations: Conductive, Static Dissipative, PTFE-TFE Filled, Glass Reinforced, Custom Sizes, Formulations, or Colors Occasionally we are asked for the difference between Acetal and HDPE – here is an explanation.

 These Properties are for evaluation purposes only. This information is not to be construed as a warranty, guarantee or assurance that you may achieve the same results. Materials made from different resin types, manufacturing techniques and manufacturers will react differently. The information should be used to compare against other materials only, and each user should make his own tests to determine suitability. No warranty as to this materials suitability are either expressed or implied.

Typical Resin Properties:

These Properties are for evaluation purposes only. This information is not to be construed as a warranty, guarantee or assurance that you may achieve the same results. Materials made from different resin types, manufacturing techniques and manufacturers will react differently. The information should be used to compare against other materials only, and each user should make his own tests to determine suitability. No warranty as to this materials suitability are either expressed or implied

Note: The Dupont brand of Acetal is called Delrin®, however we are frequently asked for Delron, Delran, Derlin, Delren, Delrun, Derlin and many more. We will do our best to translate what you ask for into a standard product. Go ahead and call us, we are happy to assist.