Unital® Acetal (polyoxy-methylene) offers design engineers a superior blend of strength, stiffness, lubricity, and dimensional stability. These properties, along with inherent machining ease, have made Unital® one of the most widely used engineering grade thermoplastics. Unital® LF-13 utilizes a powdered PTFE at a 13% loading and is compliant with both FDA and USDA regulations at a cost that is up to 33% less than other filled acetal products, making it the workhorse of the enhanced wear acetal product family.
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Polyoxymethylene, Polyacetal
Available In
Sheet, Rod
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| Type | Size | Length | Color |
|---|---|---|---|
| Sheet | .250 – 3” | 24” x 48’, 12” x 48”, 48” x 96” | Brown |
| rod | .250 – 6″ | 96”, 120” | Brown |
Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.
| Physical Properties | Units | ASTM | Results |
|---|---|---|---|
| Density | lb/in³ | D792 | 1.48 |
| Water Absorption, 24 hrs | % | D570 | 0.23 |
| Mechanical Properties | Units | ASTM | Results |
|---|---|---|---|
| Tensile Strength @ yield | psi | D638 | 8000 |
| Tensile Modulus | psi | D638 | 600000 |
| Tensile Elongation @Break | % | % | 15 |
| Flexural Strength | psi | D790 | 13500 |
| Flexural Modulus | psi | D790 | 410000 |
| Compressive Strength | psi | D695 | 15500 |
| Compressive Modulus | psi | D695 | |
| Hardness, Rockwell R | D785 | 89 | |
| IZOD Impact Strength Notched | ft-lb/in | D256 | 0.8 |
| Thermal Properties | Units | ASTM | Results |
|---|---|---|---|
| Coeffcient of Linear Thermal Expansion | (x 10^-5 in./in./°F) | 5.2 | |
| Heat Deflection Temp at 264 psi | °F | 235 | |
| Melting Temperature | °F | 347 | |
| Max Operating Temp. | °F | 185 | |
| Thermal Conductivity | BTU-in/ft²-hr-°F | n/a | |
| Flammability Rating | HB |
| Electrical Properties | Units | ASTM | Results |
|---|---|---|---|
| Dielectric Strength. 1/8″ th. | V/mil | D149 | |
| Dielectric Constant @1 MHz | |||
| Dissipation Factor@1 MHz | D150 | ||
| Volume Resistivity, 50% RH | ohm-cm | D257 | 10^15 |
NOTE: The property values presented above are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.