PROPERTIES OF POM-POLYACETAL RODS
|
 |
|
| PROPERTY |
ASTM |
POM-POLYACETAL |
| Specific gravity |
D792 |
1.41 |
| P.S.I. Tensile Strength |
D638 |
8800 |
| % Elongation |
D638 |
40.75 |
| P.S.I. Comprehensive Strength |
D695 |
16000 (10% defl.) |
| Impact Strength(1/2x1/2 in. notched) |
D256 |
1.0-1.5 (1/2x1/2inbar) |
| Hardness Rockwell |
D785 |
M78-M80 |
| 105 P.S.I. 730 F Flexural Modules |
D790 |
3.75 |
| Coefficient of friction |
-- |
0.18 |
| -104 cal sec cm3 C cm Thermal conductivity |
C177 |
5.5 |
| Thermal expansion 105per 0C |
D696 |
8.5 |
| Resistance to heat0C (Continuous) |
-- |
800 C 1200 C |
| Ω - cm (23 0C50%) Volume resistivity |
D257 |
10 x 1014 |
| 1/8 in thickness volts mil Dielectric strength |
D149 |
500 (90mil) |
| 1 KHz Dielectric constant |
D150 |
3.7 |
| 1 KHz Dissipation (power) factor |
D150 |
0.0010 (40mil) |
| 24/j3.2 mm % water absorption 24hr. 3.2 thickness, % |
D150 |
0.22 |
| in mm Burning rate |
D570 |
1.0 - 1.1 |
| Effect of weak acids |
D635 |
Resistant to some |
| Effect of strong acids |
D543 |
Attacked |
| Effect of weak alkalies |
D543 |
Attacked |
| Effect of strong alkalies |
D543 |
Attacked |
| Effect of organic solvents |
D543 |
Excellent resistance to practically all solvents. |