Acetal / Delrin®

Acetal and Delrin Rod and Sheet

American Made Delrin and Acetal Sheet and rod

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

All Are P.O.M. (PolyOxyMethylene)

Acetal - Delrin For Dummies. AKA, For The Beginner

 

*Why use Acetal or Delrin Rod or Sheet:

  • Both materials are FDA Compliant
  • Both have good mechanical properties
  • 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

American Made Plastics Delrin Rod and Acetal Rod


Acetal - Delrin For Experts

This materials is…

an excellent machining material – a favorite of machinists. Works like a soft brass, and has exceptional dimensional stability.

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

Acetal and Delrin Rod and Sheet 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. 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®.

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. Read more on this in data sheets. 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.

The Delrin® brand and the common  Co-Polymer resins are both readily available. On this website, we price and supply the more popular Co-Polymer by client request. If you would prefer to get your hands on the Delrin® brand product, 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.

American Made Plastics

Mfg Data Sheet Button Acetal - DelrinData Sheet

Typical MSDS Button Acetal - DelrinTypical MSDS Sheet

Machining Guidelines Button ABSMachining Guidelines Chemical Resistance Button Acetal - DelrinChemical Resistant Chart

Applications – Frequently used in:

  • Wear and Slide machined parts
  • 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, Teflon Filled for wear resistance

Materials Available As

Acetal - Delrin Rod on Lathe

Acetal – Delrin Sheet:

.062″ – 6.0″ up to 48″ X 120″ in Natural (White) and Black

Delrin AF Sheet:

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

Film:

Black and Natural Acetal - Delrin Rod

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

Acetal – Delrin Rod:

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

Special Formulations:

Conductive, Static Dissipative, Teflon Filled, Glass Reinforced, Custom Sizes, Formulations, or Colors


Typical Resin Properties:

General Property ASTM
Test
Typical Value
Unfilled Delri
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
Co. Thermal Expansion D696 6.83X10-5 5.4X10-5 5.0X10-5
American Made Plastics
Mfg Data Sheet Button Acetal - DelrinData Sheet Typical MSDS Button Acetal - DelrinTypical MSDS Sheet
Machining Guidelines Button ABSMachining Guidelines Chemical Resistance Button Acetal - DelrinChemical Resistant Chart

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.

For excellent machinablilty, stiffness, and FDA compliance, Acetal / Delrin® are both an excellent choice.

Get Delrin Sheet and Rod pricing here

Acetal – Delrin Rod and Sheets available from stock