|
|
| Chemical Designation |
Polyoxymaethylene (copoly)
|
| DIN Abbreviation |
POM
|
| Colour, Filler |
|
| Stock Availabilty |
|
| Main Characteristics |
|
| Preferred Fields |
|
| Applications |
|
| MECHANICAL |
| Properties |
Unit
|
Test method
DIN ASTM
|
|
| Density |
g/cm3
|
53 479
|
1.42
|
| Tensile strength/ yield |
MPa
|
53 455
|
70
|
| Tensile strength/ break |
MPa
|
53 455
|
|
| Elongation / break |
%
|
53 455
|
40
|
| Modules of elasticity/tension |
MPa
|
53 457
|
3300
|
| Modules of elasticity/flexure |
MPa
|
53 457
|
2620
|
| Ball indentation hardness |
MPa
|
53 456
|
170
|
| Impact strength (charpy) |
kJ/m2
|
53 453
|
no.br
|
| Creep rupture strength /1000 hrs static load |
MPa
|
|
40
|
| Time yield 1% elongation/1000hrs |
MPa
|
|
13
|
| Coefficient of friction/ hardened & ground steel |
-
|
|
0.34
|
| Wear/ as above |
mm/km
|
|
4.6
|
| THERMAL |
| Properties |
Unit
|
Test method
DIN ASTM
|
|
| Crystaline melting point |
ºC
|
53 736
|
175
|
| Glass transition temperature |
ºC
|
53 736
|
-38
|
| Heat distortion temperature |
Method A |
ºC
|
ISO 75
|
124
|
| Method B |
ºC
|
ISO 75
|
170
|
| Field33 |
|
|
|
| Maximum service temperature |
short term |
ºC
|
|
150
|
| long term |
ºC
|
|
100
|
| Coefficient of thermal conductivity |
W/(m.K)
|
|
0.31
|
| Specific heat |
J(g.K)
|
|
1.5
|
| Coefficient of thermal expansion |
10-5/K
|
|
10
|
| ELECTRICAL |
| Properties |
Unit
|
Test method
DIN ASTM
|
|
| Dielectric constant at 105 HZ |
|
53 483
|
3.7
|
| Dielectric loss factor 105 HZ |
S.cm
|
53 483
|
0.005
|
| Specific volume resistance |
S
|
53 482
|
1.00E+15
|
| Surface resistance |
|
53 482
|
|
| Dielectric strength 1 mm |
KV/mm
|
53 481
|
>50
|
| Tracking resistance |
|
53 480
|
KA3c
|
| MISCELLANEOUS |
| Properties |
Unit
|
Test method
DIN ASTM
|
|
| Moisture absorption |
%
|
53 714 |
0.3
|
| Water absorption at saturation at 23 §C |
%
|
53 495 |
0.5
|
| Resistance to hot water, washing soda |
|
|
not resistant
|
| Flammibilty |
|
UL 94 |
HB
|
| Resistance to weathering |
|
|
not resistant
|
| Compliance |
|
|
|
