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. |