Acetal Materials
Acetal Copolymer / Dupont Delrin® 150SA Homopolymer
Which Acetal material should you use? (POM)
- Both Acetal Copolymer and Delrin® 150SA Homopolymer are FDA Compliant
- Both are very stiff and have excellent dimensional stability
- Are Self Lubricating, Abrasion Resistance, and Excellent Wear properties
- Available in Natural, Black and Blue. Custom colors also available.
- Cuts extremely well with standard cutting tools
- Delrin® AF (PTFE Filled), Glass Filled, and Specialty Grades Available
- Delrin® 150SA Homopolymer have similar properties and frequently replace: Noryl®, Nylon®, and PET or PBT materials
- Acetal and Delrin® are High Tech Performance Plastics
Some reasons to choose Homopolymer vs. Copolymer
Both Acetal (POM) grades have very similar properties. Our clients seem to prefer the Dupont brand name Homopolymer materials because of the superior physical properties. The issues that lead clients to the Copolymer is a slightly lower cost, and the minor inherent center-line porosity in the Delrin® 150SA Homopolymer grade.
Dupont™ Delrin ® is a popular acetal homopolymer brand name and the most commonly used acetal homopolymer.
The Delrin® 150SA is a brand name of Dupont, and it is often referred to as POM-H or Acetal Homopolymer. Common brand or trade names for extruded Acetal sheet and rod materials include: Tecaform® AH, SUSTARIN® C, ZL® 900-C, Pomalux®, Unital®, Mechatec Acetal®, Acetron® and many more. This excellent mechanical plastic material is also referred to as: Acetal Copolymer rod, Copolymer Acetal rod, Copolymer Plastic Rod, Acetal Copolymer vs Acetal Homopolymer, Homopolymer Acetal rod, Acetal Homopolymer rod, and many others.
Specializing in Wholesale Acetal and Delrin Engineering Plastics, Mechanical Plastics and High Performance Plastics
**Note: Delrin® is a registered Trademark of Dupont
**See also: Alignable Acetal – Delrin Page
Why you should use Acetal/ Delrin®
- Both the Dupont Delrin® and Acetal Copolymer are FDA Compliant
- They are very stiff and have excellent dimensional stability
- Are self-lubricating, abrasion-resistant, and have excellent wear properties
- 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 with tiny porous holes. 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 Copolymer resin made by one of the other big resin manufacturers – like BASF or Celanese/Tacona.
Both Delrin and Acetal are ITAR compliant, and Delrin and Acetal are RoHS compliant.
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 premium performance plastic resins are readily available. 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 the 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? Acetal Compared With Delrin® and Use The Best Wholesale Acetal Rod and Delrin® 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.
Industrial Plastic Supply proudly stocks Acetal and Dupont Delrin 150SA from these premium manufacturers:
Ensinger® Plastics for Dupont Delrin 150SA and Tecaform AH Copolymer Acetal
Rochling® Plastics for Dupont Delrin 150SA and Sustarin C Copolymer Acetal
Z/L Plastics® for Dupont Delrin 150SA and ZL® 900 series Copolymer Acetal
And many more ‘American Made’ quality plastic manufacturers.
Both Delrin and Acetal are ITAR compliant, and Delrin and Acetal are RoHS compliant.
Acetal materials are excellent machining materials – 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:
- 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
Materials Available As
Delrin® Sheet – Delrin®Plate or Acetal Sheet – Acetal Plate: .062″ – 6.0″ up to 48″ X 120″ in Natural (White) and Black.
Acetal sheet and Acetal Plate 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 and Plate: .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 – up to 20.0″ diameter rod is available!
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.
Typical Resin Properties:
| General Property | ASTM Test | Typical Value Unfilled Delrin® Homo-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 |
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 nor implied.