Acetal, also known as POM (Polyoxymethylene), is a semi-crystalline engineering thermoplastic material, with a continuous use temperature range of up to 180° F (82° C). Acetal offers high strength and stiffness coupled with high dimensional stability and ease of machining.
Benefits of Acetal
Strength/Rigidity
Dimensional Stability
Low Moisture Absorption
Wear Resistant
Dimensions: 12″ x 12″, 12″ x 24″, 12″ x 48″, 24″ x 24″, 24″ x 48″, 48″ x 96″, 48″ x 120″
Thickness: 0.030″ – 6″
Round
Diameter: 0.125″ – 14″
Hex
Diameter: 0.25″ – 1.125″
Square
Width: 0.375″ – 1″
Outside Diameter: 3″ – 8.5″
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Suppliers / Brands
Common Applications
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Aerospace
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Automotive
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Bearings and Bushings
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Bus and Rail
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Chemical Processing
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Food and Beverage Preparation and Processing
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Gaskets and Seals
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Gears
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Heavy Equipment
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Machine Shops
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Medical Packaging
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Oil and Gas
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Packaging and Conveying Equipment
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Recreational Vehicles
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Semiconductor and Electronics
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Sporting Goods
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Tooling & Prototyping
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Valves and Fittings
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Watercraft
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Wear Strips
Aerospace
Automotive
Bearings and Bushings
Bus and Rail
Chemical Processing
Food and Beverage Preparation and Processing
Gaskets and Seals
Gears
Heavy Equipment
Machine Shops
Medical Packaging
Oil and Gas
Packaging and Conveying Equipment
Recreational Vehicles
Semiconductor and Electronics
Sporting Goods
Tooling & Prototyping
Valves and Fittings
Watercraft
Wear Strips
Physical Properties
| Units | ASTM Test | Copolymer ACETAL | Homopolymer ACETAL | |
|---|---|---|---|---|
| Tensile strength @ break @ 73°F | psi | D638 | 4,500 – 9,690 | 7,000 – 9,800 |
| Flexural modulus @ 73°F | psi | D790 | 264,000 – 434,000 | 305,000 – 464,000 |
| Izod impact (notched) | ft-lbs/in of notch | D256 | 264,000 – 434,000 | 0.77 – 2.3 |
| Deflection Temperature Under Load @ 264 psi Unannealed | ft-lbs/in of notch | D658 | 208 – 230 | 199 – 320 |
| Coefficient of linear thermal expansion (CLTE) | (in/in F) | D696 | 7.2E-6 to 7.4E-5 | 5.4E-5 to 5.6E-5 |
| Compressive strength | psi | D695 | 4,400 – 16,000 | 4,400 – 16,000 |
| Coefficient of friction | D1894 | 0.005 – 0.46 | 0.070 – 0.25 | |
| Taber Abrasion Resistance | mg | D1044 | 13.8 – 14.0 | 12.8 – 13.1 |
| Water absorption – 24 hours – 1/8″ thick | 0.036 – 0.11% | D570 | 0.11 – 0.27 | 0.16 – 0.26 |
| Compressive strength | psi | D695 | 4,400 – 16,000 | 4,400 – 16,000 |
* Technical Data is provided courtesy of UL Prospector (www.ulprospector.com) and IAPD (www.IAPD.org).
Data is to be considered representative and is provided for guidance only. All product performance must be verified by the user under actual application conditions.
