Polyoxymethylene
POM
POM is part of the polyacetals family and is a semi-crystalline thermoplastic. POM is extremely dimensionally stable in damp environments and is generally used without reinforcement due to its excellent mechanical properties.
The high level of thermal expansion must be taken into account during use.
| Short designation | POM |
| Description | Polyoxymethylene (copolymer) |
| Mechanical properties | |
| Test specimen condition | Standard |
| Tensile strength [MPa] | No info |
| Elastic modulus (tensile) [MPa] | 2700 |
| Ball indentation hardness [MPa] | 145 |
| Physical properties | |
| Density [g/cm³] | 1.4 |
| Melting point [°C] | 167 |
| Application temperatures | |
| Max. temp., short-term [°C] | 140 |
| Max. temp., continuous [°C] | 100 |
| Min. application temp. [°C] | -50 |
| Other properties | |
| Flammability according to UL 94 | HB |
| Water absorption (normal climate) [%] | 0.2 |
| Chemical resistance | |
| Mineral grease and oils | + |
| Petrol | + |
| Weak/strong acids | +/- |
| Weak/strong alkalis | +/+ |
| Perchloroethylene | + |
| Trichloroethylene | - |
| Acetone | + |
| Alcohols | + |
| Hydrolysis resistance (hot water) | + |
| Weather/UV radiation | o |
+ resistant / o conditionally resistant / - not resistant
This information is for reference only; we do not assume any liability for its accuracy. The properties of thermoplastics are highly dependent on their specific composition and their additives.