Polyacetal rods and POM-C Polyacetal rods and POM-C Polyacetal rods and POM-C
Polyacetal / POM-C Rods
Polyoxymethylene, commonly known as acetal and chemically referred to as POM-C Polyacetal, is a versatile plastic material with a continuous working temperature ranging from -40 °C to +100 °C.
The robustness of POM-C polyacetal rods eliminates the risk of stress cracking while ensuring high dimensional stability. This copolymer exhibits notable thermal stability and resilience against chemical agents.
When considering the use of POM-C, it’s crucial to account for its enhanced hydrolytic stability and resistance to various solvents.
This POM-C material finds extensive application in the food industry, where resistance to hot water and diverse chemical agents is essential. The natural or black round POM-C rods and sheets comply with the food regulations outlined in 10/2011/EC.
Key Features:
Mechanical strength and hardness in POM-C rods Excellent elasticity and durability, showcasing elastic memory High impact strength, even at low temperatures, in POM-C polyacetal rods Very good dimensional stability during processing Impressive sliding properties and wear resistance Outstanding workability Good electrical properties and dielectric performance in POM-C rods Self-lubricating material composition in these POM rods Minimal water absorption (ranging from 0.2% to 0.8%) Physiologically inert, making it suitable for the food industry Low water absorption (from 0.2% to 0.8%) in POM-C rods Effective resistance to UV rays
Applications:
These POM-C rods prove valuable in engineering, transport, conveyor technology, packaging machines, paper handling, precision mechanical components, the automotive industry, electrical engineering, household appliances, and medical equipment.
POM-C Rods are suitable for:
Manufacturing POM-C spring components, bushings, gears, cam discs (eccentric), cam discs and ratchet mechanisms, sliding components, electrical insulators, valves, major precision components, and various details that operate for extended periods underwater at temperatures ranging from 60 to 80 °C.
Mechanical Properties
| MECHANICAL PROPERTIES | VALUE | UNIT | PARAMETER | NORM |
|---|---|---|---|---|
| Tensile strength at yield | 57 | MPa | 50mm/min | DIN EN ISO 527-2 |
| Tensile strength | 57 | MPa | 50mm/min | DIN EN ISO 527-2 |
| Modulus of elasticity (tensile test) |
2900 | MPa | 1mm/min | DIN EN ISO 527-2 |
| Notched impact strength (Charpy) | 4 | kJ/m2 | max. 2J | DIN EN ISO 179-1eA |
| Elongation at break | 15 | % | 50mm/min | DIN EN ISO 527-2 |
| Flexural strength | 82 | MPa | 2mm/min, 10 N | DIN EN ISO 178 |
| Modulus of elasticity (flexural test) |
2700 | MPa | 2mm/min, 10 N | DIN EN ISO 178 |
| Compression strength | 30 | MPa | 1% / 2% | EN ISO 604 |
| Ball indentation hardness | 141 | MPa | ISO 2039-1 | |
| Compression modulus | 2300 | MPa | 5mm/min, 10 N | EN ISO 604 |
| Impact strength (Charpy) | 56 | kJ/m2 | max. 7,5J | DIN EN ISO 179-1eU |
| Elongation at yield | 11 | % | 50mm/min | DIN EN ISO 527-2 |
Thermal Properties
| THERMAL PROPERTIES | VALUE | UNIT | PARAMETER | NORM |
|---|---|---|---|---|
| Service temperature | 100 | C | long term | NN |
| Service temperature | 140 | C | short term | NN |
| Glass transition temperature | -60 | C | DIN EN ISO 11357 | |
| Melting temperature | 168 | C | DIN EN ISO 11357 |
Electrical Properties
| ELECTRICAL PROPERTIES | VALUE | UNIT | PARAMETER | NORM |
|---|---|---|---|---|
| surface resistivity | 1014 | O | Silver electrode, 23°C, 12% r.h. | DIN IEC 60093 |
| volume resistivity | 1013 | O*cm | Silver electrode, 23°C, 12% r.h. | DIN IEC 60093 |
Other Properties
| OTHER PROPERTIES | VALUE | UNIT | PARAMETER | NORM |
|---|---|---|---|---|
| Water absorption | 0.1 | % | 24h / 96h (23°C) | DIN EN ISO 62 |
| Resistance to hot water/ bases | (+) | – | – | |
| Resistance to weathering | – | – | – | |
| Flammability (UL94) | HB | – | corresponding to | DIN IEC 60695-11-10; |
