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Delrin® (Polyoxymethylene) Extended
Properties
| General |
|
Comments |
Units |
|
|
| Density |
|
ASTM D792 |
g/cc |
1.42 |
| Melt Flow |
|
1.05kg/190°C |
g/10 min |
1 |
| Water Absorption |
24 hour |
ASTM D570 |
|
|
| Moisture Absorption at Equillibrium |
50% RH |
ASTM D570 |
% |
0.22 |
| Water Absorption at Saturation |
Immersion |
ASTM D570/ ISO 62 |
% |
0.9 |
| Hardness, Rockwell M |
|
ASTM D785 |
- |
94 |
| Hardness, Rockwell R |
|
ASTM D785 |
- |
120 |
| |
|
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|
|
| Mechanical |
|
Comments |
Units |
|
|
| Tensile Strength |
Ultimate |
ASTM D638 |
MPa(psi) |
69(10,008) |
| Elongation |
break |
ASTM D638 |
% |
75 |
| Modulus of Elasticity |
GPa |
ASTM D638 |
406 ksi |
2.8 |
| Flexural Modulus |
GPa |
ASTM D790 |
421 ksi |
2.9 |
| Flexural YieldStrength |
|
ASTM D790 |
MPa(psi) |
99 |
| Izod Impact Strength |
J/cm |
ASTM D256 |
2.3ft-lb/in |
1.23 |
| |
Unnotched, J/cm no break |
ASTM D256 |
1,871ft-lb/in |
999 |
| Izod Impact Low Temp |
Notched, J/cm at -40°C |
ASTM D256 |
1.8ft-lb/in |
0.96 |
| Tensile Impact Strength |
kJ/m2 |
ASTM D1822 |
170ft-lb/in2 |
358 |
| Compressive Yield Strength |
|
ASTM D695 |
MPa(psi) |
124(17,985) |
| Shear Strength |
|
ASTM D732 |
MPa(psi) |
66(9,573) |
| Fatigue Strength |
Flexural fatigue endurance limit, 50% RH, |
ASTM D672 |
MPa(psi) |
32(4,641) |
| Fatigue Strength |
Flexural fatigue endurance limit, 50% RH, 1E+6 cycles |
ASTM D672 |
MPa(psi) |
32(4,641) |
| Poissons Ratio |
|
- |
|
0.35 |
| Coefficient of Friction |
Dynamic vs. carbon steel, 50mm/s (2in/s) |
2MPa |
|
0.35 |
| |
|
|
|
|
| Thermal |
|
Comments |
Units |
|
|
| Coefficient of Thermal Expansion |
linear 20°C
linear 100°C |
µm/m-°C
µm/m-°C |
60µin/in-°F
83µin/in-°F |
122
149 |
| Deflection Temperature |
at 0.46 MPa, °C
at 1.8 MPa, °C |
ASTM D648
ASTM D648 |
336°F
257°F |
169
125 |
| Melting Point °C |
°C |
ASTM D3418 |
347°F |
175 |
| Maximum Service Temperature |
Deflection Temp at 1.8 MPa |
- |
257°F |
125 |
| Thermal Conductivity |
W/m-K |
- |
2.8BTU-in/hr-ft2-°F |
0.4 |
| Flammability, UL94 |
(5=V-0;4=V-1;3=V-2;1=HB) |
UL94 |
HB |
1(HB) |
| |
|
|
|
|
| Electrical |
|
Comments |
Units |
|
|
| Electrical Resistivity |
|
ASTM D257 |
Ohm-cm |
1E+15 |
| Dielectric Constant |
at 1MHz |
ASTM D150 |
- |
3.7 |
| Dielectric Strength, kV/mm |
2.3mm (90 mils); Short Time |
ASTM D149 |
500 kV/in |
19.7 |
| Dissipation Factor |
at 1 MHz |
ASTM D150 |
- |
0.005 |
| Arc Resistance |
|
ASTM D495 |
sec |
220 |
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