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| POM-POLYACETAL ROUND RODS |
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Polyacetal sheets, plates and rods are among the strongest and stiffest of all thermoplastics. Polyacetal and Delrin plastic materials are characterized by good fatigue life, low moisture sensitivity, and high resistance to solvents and chemicals. Polyacetal products also contain good electrical properties. Homo-polymer and Copolymer grade of Polyacetal are available including an enhanced bearing grade material.
Polyacetal -POM is a semi crystalline engineering plastic that is beneficial to engineering applications, and is suited to CNC machining
Polyacetal -POM Sheet & Rod Characteristics:
- High mechanical strength
- Excellent resilience
- Good creep resilience
- High impact strength, even at low temperatures
- Very good dimensional stability
- Good sliding properties and wear resistance
- Excellent machinability
- Physiologically inert (most grades are suitable for food contact
Polyacetal -POM Sheet & Rod Applications
Gear wheels with small modulus, cams, heavily loaded bearings and rollers, bearing and gears with small clearances, valve seats, snap fit assemblies, dimensionally stable precision parts, and electrically insulating components.
Polyacetal -POM Products
Polyacetal (POM-C) Color: Natural (white) / black
Polyacetal Co-polymer, (POM-C) is more resistant against hydrolysis, strong alkalis and thermal-oxidative degradation than the polyacetal homo-polymer (POM-H).
Polyacetal (POM-H) Color: Natural (white) / black
Polyacetal Homo-polymer (POM-H) has higher mechanical strength, stiffness, hardness and creep resistance as well as a lower thermal expansion rate when compared to polyacetal (POM-C) and often it also presents a better wear resistance.
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| WEIGHT CHART OF POM-POLYACETAL ROUND RODS |
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| Size in inches |
Size in MM |
POM-POLYACETAL Rods 1 Meter Length in Kgs. |
| 1/2" |
12 |
0.200 |
| 5/8" |
16 |
0.320 |
| 3/4" |
20 |
0.460 |
| 7/8" |
22 |
0.640 |
| 1" |
25 |
0.850 |
| 1 1/4" |
32 |
1.280 |
| 1 1/2" |
40 |
1.850 |
| 1 5/8 " |
41 |
2.310 |
| 1 3/4" |
45 |
2.550 |
| 2" |
50 |
3.350 |
| 2 1/4" |
57 |
4.250 |
| 2 1/2" |
65 |
5.000 |
| 2 3/4" |
70 |
6.200 |
| 3" |
75 |
6.750 |
| 3 1/4" |
82 |
8.400 |
| 3 1/2" |
90 |
10.400 |
| 4" |
105 |
11.800 |
| 4 1/2" |
115 |
16.500 |
| 5" |
125 |
18.000 |
| 6" |
150 |
28.500 |
| PROPERTIES OF POM-POLYACETAL RODS |
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| 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. |
| POM-POLYACETAL EXTRUDED SHEETS |
| THICKNESS |
WIDTH |
LENGTH |
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| 10mm to 100mm |
300mm |
1200mm long |
| 40mm to 50mm |
450mm |
1200mm long |
| 10mm to 25mm |
600mm |
1200mm long |
| * SPECIAL LENGTHS AND COLOURS AVAILABLE ON DEMAND |
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