Acetal and Delrin Rod and Sheet

Delrin, Co-Polymer, Homo-polymer, Celcon, BASF

All Are P.O.M. (PolyOxyMethylene)

Stocked in Sheet-Sheets, Rod-Rods, Block, Strip and Slab

Acetal_Delrin

This material is used frequently in a self lubricating bearing surface or slide type applications. Extremely low water absorption makes this a perfect material for valves, seats and moving parts in water filled areas (most white parts in toilet tanks are this material). Crisp machining and tight tolerances are easily obtainable with these materials.

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Why you should use Acetal/ Delrin

  • Both Delrin and Acetal are FDA Compliant
  • Both are very stiff and have excellent dimensional stability
  • Are self lubricating, Excellent Wear and Abrasion Resistance
  • Cuts extremely well with standard cutting tools
  • Delrin AF (PTFE Filled), Glass Filled and Specialty Grades Available
  • Delrin Rod and Plate have similar properties and frequently replace: Noryl, Nylon and PET materials

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. There are a few other names we hear when people are looking for Delrin, like, Delron, Delran, Delrun, Delren, and many more. Just let us know, and we will be happy to supply a high quality Delrin brand or Copolymer Acetal product.

Want more information on the differences see: Acetal Vs. Delrin

Looking for a FDA Approved material that can be used in food processing? Consider using Blue Copolymer Acetal Sheet and Rod. We can also supply X-Ray and Metal Detectable Acetal Rods and Sheets. Ask Us Today!

Use The Best Acetal Rod Supplier.
Natural Acetal Copolymer Rod Now Available up to 24″ in Diameter
Still not sure Delrin or Acetal is the proper material for your application, consult our free Plastic Materials Selection Guide.

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.
Applications – Frequently used in:
Acetal

  • 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
  • 185 degrees F Continuous Temperature Environments
  • 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 D6778 Superseded or out dated Specifications for Acetal – Delrin: L-P-392, ASTM D4181

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:
Black and Natural Acetal Rod.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 Blackup 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:

General Property ASTM Test Typical Value Unfilled DelrinHomo-Polymer Typical Value Unfilled Co-Polymer Typical Value Delrin AF
Specific Gravity D792 1.42 1.40 1.50
Tensile Strength Yield D638 9,600 – 11,000 9,000 – 10,200 7,600
Tensile Modulus D638 450,000 400,000 400,000
Izod Impact – Notched D256 1.2 1.0 0.9
Hardness – Rockwell D785 M94 M90 M89
Deflection Temp @ 264psi D648 257 220 260
Deflection Temp @ 66 psi D648 347 335 347
Water Absorption @ 24 hrs % 0.24 0.25 0.20
Co. Thermal Expansion D696 6.83X10-5 5.4X10-5 5.0X10-5

Chem. Resistance ChartMfg. Data Sheet
MSDS SheetMachining Guidelines

Most Common Questions About Acetal Materials

Q: Is Delrin the same as Acetal in Sheet and Rod?
A: No, not all Acetal is Delrin, but all Delrin is Acetal. Delrin is a trade name for Dupont Brand Homopolymer Acetal. The standard and most common Acetal is the Copolymer version of Acetal. Both Delrin and Acetal are easily machinable and are excellent for wear applications. The physical properties are similar; however the Dupont Delrin has slightly higher tensile, heat deflection and specific gravity. The Acetal is slightly lighter and has lower thermal expansion. One big difference is that in large cross sections the Dupont Delrin can have a centerline porosity (or soft center), which can cause problems with machining an item that needs consistent density throughout the part.

Q: Do both Delrin and Acetal Sheets and Rods machine the same?
A: Yes. The Acetal materials machine the same. Both Delrin Brand and Acetal Copolymer look, feel and machine the same. It is nearly impossible to tell the difference between the two materials simply by looking or machining them. The only differences normally noticed is in critical applications where temperature, load or impact needs to be at a certain level. the ‘Data Sheets’ tab for specifics on physical properties.

Q: Is there a difference in price between Delrin and Acetal?
A: Yes. Currently the resin price for the Delrin Brand Homopolymer is a bit higher than the Acetal Copolymer resin. This difference in resin cost varies from time to time, but as a general rule the Delrin Brand Homopolymer sheet and rod is about 10% more than the Acetal Copolymer in the same sizes. We continually watch this price differential, and do our best to minimize this difference to our clients. The largest and best know Acetal Copolymer material is produced by BASF. This premium Acetal Copolymer product is the leader in high quality finished goods.

Q: What other materials are similar to Acetal or Delrin?
A: There are several plastic sheet and rod materials that have similar applications and some similar physical properties. The material that is most often used to replace Acetal and Delrin is Dupont Nylon Rod and Sheet. The East Coast of the US actually seems to prefer using Nylon over Acetal, simply because they started using Nylon back in the late 1930’s, where the Acetal materials were not commercially available until the 1960’s. One main difference between Acetal and Nylon is that Nylon has a much higher moisture absorption, and that must be considered in all machined part design.

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  • Available in Natural and Black
    Available in Natural and Black
    Available in Natural and Black
    Available in Natural and Black
    Available in Natural, Black and AF
    Available in Natural and Black
    Available in Natural, Black and AF
    Available in Natural and Black
    Available in Natural, Black and AF
    Available in Natural, Black and AF
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    Available in Natural and Black
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  • Available in Natural and Black
    Available in Natural and Black
    Available in Natural and Black
    Available in Natural and Black
    Available in Natural, Black and AF
    Available in Natural and Black
    Available in Natural, Black and AF
    Available in Natural, Black and AF
    Available in Natural, Black and AF
    Available in Natural, Black and AF
    Available in Natural, Black and AF
    Available in Natural and Black
    Available in Natural and Black
    Available in Natural and Black
    Available in Natural and Black
    Available in Natural and Black
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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.