Common features of Delrin® acetal resins include mechanical and physical properties such as high mechanical strength and rigidity, excellent fatigue and impact resistance, as well as resistance to moisture, gasoline, lubricants, solvents, and many other neutral chemicals. Delrin® acetal resins also have excellent dimensional stability and good electrical insulating characteristics. They are naturally resilient, self-lubricating, and available in a variety of colors and speciality grades.
Delrin® acetal resin typically is used in demanding applications in the automotive, domestic appliances, sports, industrial engineering, electronics, and consumer goods industries.
| Rheological properties |
Value |
Unit |
Test Standard |
| Melt volume-flow rate, MVR |
13 |
cm³/10min |
ISO 1133 |
| Temperature |
190 |
°C |
ISO 1133 |
| Load |
2.16 |
kg |
ISO 1133 |
| Molding shrinkage, parallel |
2.0 |
% |
ISO 294-4, 2577 |
| Molding shrinkage, normal |
1.9 |
% |
ISO 294-4, 2577 |
| Mechanical properties |
Value |
Unit |
Test Standard |
| Tensile modulus |
3100 |
MPa |
ISO 527-1/-2 |
| Yield stress |
70 |
MPa |
ISO 527-1/-2 |
| Yield strain |
15 |
% |
ISO 527-1/-2 |
| Nominal strain at break |
30 |
% |
ISO 527-1/-2 |
| Charpy impact strength, +23°C |
260 |
kJ/m² |
ISO 179/1eU |
| Charpy impact strength, -30°C |
260 |
kJ/m² |
ISO 179/1eU |
| Charpy notched impact strength, +23°C |
9 |
kJ/m² |
ISO 179/1eA |
| Charpy notched impact strength, -30°C |
8 |
kJ/m² |
ISO 179/1eA |
| Thermal properties |
Value |
Unit |
Test Standard |
| Melting temperature, 10°C/min |
178 |
°C |
ISO 11357-1/-3 |
| Temp. of deflection under load, 1.80 MPa |
90 |
°C |
ISO 75-1/-2 |
| Temp. of deflection under load, 0.45 MPa |
163 |
°C |
ISO 75-1/-2 |
| Vicat softening temperature, 50°C/h 50N |
160 |
°C |
ISO 306 |
| Coeff. of linear therm. expansion, parallel |
110 |
E-6/K |
ISO 11359-1/-2 |
| Coeff. of linear therm. expansion, normal |
120 |
E-6/K |
ISO 11359-1/-2 |
| Burning behavior at thickness h |
HB |
class |
IEC 60695-11-10 |
| Thickness tested (h) |
0.8 |
mm |
IEC 60695-11-10 |
| Yellow Card available |
Yes |
– |
– |
| Burning rate, thickness 1 mm |
21 |
mm/min |
ISO 3795 (FMVSS 302) |
| FMVSS |
B |
– |
ISO 3795 (FMVSS 302) |
| Electrical properties |
Value |
Unit |
Test Standard |
| Relative permittivity, 100Hz |
3.8 |
– |
IEC 62631-2-1 |
| Relative permittivity, 1MHz |
3.8 |
– |
IEC 62631-2-1 |
| Dissipation factor, 100Hz |
21 |
E-4 |
IEC 62631-2-1 |
| Dissipation factor, 1MHz |
56 |
E-4 |
IEC 62631-2-1 |
| Volume resistivity |
>1E13 |
Ohm*m |
IEC 62631-3-1 |
| Surface resistivity |
2E13 |
Ohm |
IEC 62631-3-2 |
| Comparative tracking index |
600 |
– |
IEC 60112 |
| Other properties |
Value |
Unit |
Test Standard |
| Water absorption |
1.2 |
% |
Sim. to ISO 62 |
| Humidity absorption |
0.2 |
% |
Sim. to ISO 62 |
| Density |
1420 |
kg/m³ |
ISO 1183 |
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