Delrin® 525GR is a 25% glass reinforced acetal homopolymer for injection molding. It has very high strength, stiffness, and high deflection temperature, and excellent creep resistance. Delrin® is the crystalline thermoplastic of choice for impact and wear resistance in a wide range of industrial and mechanical applications. With low, consistent internal stress, the material is easily machined and fabricated, experiencing little dimensional change during machining and use.
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Polyoxymethylene, Polyacetal
Available In
Resin
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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 | kg/m3 (g/cm3 ) | ISO 1183 | 1600 (1.60) |
| Mechanical Properties | Units | ASTM | Results |
|---|---|---|---|
| Tensile Strength | MPa (kpsi) | ASTM D 638 | 5mm/min (0.2in/min) - 151 (21.9) |
| Elongation at Break | % | ASTM D 638 | 5mm/min (0.2in/min) - 3.2 |
| Tensile Modulus | MPa (kpsi) | ASTM D 638 | 5mm/min (0.2in/min) - 9000 (1310) |
| Flexural Modulus | MPa (kpsi) | ASTM D 790 | 8000 (1160) |
| Izod Impact | J/m (ft lb/in) | ASTM D 256 | 96 (1.8) |
| Unnotched Impact | J/m (ft lb/in) | ASTM D 4812 | 1100 (20.6) |
| Thermal Properties | Units | ASTM | Results |
|---|---|---|---|
| Heat Deflection Temperature | °C (°F) | ASTM D 648 | |
| 0.45MPa (66psi), Not Annealed | 177 (351) | ||
| 1.8MPa (264psi), Not Annealed | 173 (344) | ||
| CLTE, Parallel | ASTM E 831 | E-4/C | |
| 23 - 55C (73 - 130F) | 0.29 | ||
| CLTE, Normal | ASTM E 831 | E-4/C | |
| 23 - 55C (73 - 130F) | 0.83 |
| Electrical Properties | Units | ASTM | Results |
|---|---|---|---|
| Surface Resistivity | ohm | ASTM D 257 | 2 E15 |
| Volume Resistivity | ohm cm | ASTM D 257 | 4 E13 |
| Dielectric Strength, Short Time | kV/mm (V/mil) | ASTM D 149 | |
| 3.2mm (0.126in) | 17.3 (440) | ||
| Dielectric Constant | ASTM D 150 | ||
| 1E6 Hz | 3.8 | ||
| Dissipation Factor | ASTM D 150 | ||
| 1E6 Hz | 0.0076 |
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.
