| About |
|---|
| 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. To meet specific application configurations and to maximize production efficiencies, Nytef Plastics offers a broad array of UNITAL Acetal stock shapes. These materials include both homopolymer (DELRIN®) and copolymer unfilled grades as well as PTFE-filled grades for enhanced wear resistance. Nytef also offers an electrically conductive grade of UNITAL Acetal that is used in the microelectronics industry to dissipate static electric charges. Base resin: Acetal Homopolymer, 13% PTFE Powder filled – Low friction, FDA Compliant, brown color&& |
| Product Description | |
|---|---|
| Generic | Paraformaldehyde |
| Material Status | Commercial: Active |
| Features | Good Rigidity,Good Dimensional Stability,Low coefficient of friction,Machinable,Lubricating,Good wear resistance,Low moisture absorption,Homopolymer,HB |
| Availabilitys | North America,Europe |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.48 | g/cm³ | ASTM D792 |
| Water absorption rate | ASTM D570 | ||
| 24hr | 0.23 | % | ASTM D570 |
| saturated | 0.80 | % | ASTM D570 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | 43 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed | 113 | ℃ | ASTM D648 |
| Continuous use temperature | 85.0 | ℃ | Internal Method |
| Melting peak temperature | 175 | ℃ | ASTM D3418 |
| Linear coefficient of thermal expansion | |||
| MD | 9.4E-5 | 1/℃ | ASTM D696 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Volume resistivity | 1.0E+15 | ohms·cm | ASTM D257 |
| Dielectric strength | 16 | kV/mm | ASTM D149 |
| Dielectric constant | ASTM D150 | ||
| 60 Hz | 3.10 | ASTM D150 | |
| 1 MHz | 3.10 | ASTM D150 | |
| Dissipation factor | |||
| 60 Hz | 9.0E-3 | ASTM D150 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | HB | UL 94 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Rockwell hardness | |||
| M-level | 89 | ASTM D785 | |
| Tensile modulus | 4140 | MPa | ASTM D638 |
| tensile strength | 55.2 to 58.6 | MPa | ASTM D638 |
| Tensile strain | |||
| fracture | 15 to 30 | % | ASTM D638 |
| Bending modulus | 2830 | MPa | ASTM D790 |
| bending strength | 93.1 | MPa | ASTM D790 |
| compressive strength | 107 | MPa | ASTM D695 |
| friction coefficient | 0.16 |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Method A (Short-Time) |
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