ACETAL
Acetal or polyoxymethylene (POM), is a formaldehyde-based, semi-crystalline engineering thermoplastic which serves as an alternative to metals due to its low friction and wear characteristics as well as its excellent balance of mechanical and chemical properties.
There are two types of POM, homopolymer (our FL321) copolymer (our FL381). Due to chemical makeup differences, it is not recommended that one type of POM be substituted by another without technical review, for example, Homopolymer is not recommended for use in strong caustics and Copolymer is more resistant to hot water than the Homopolymer.
Our semi-finished capacity and capability
- Acetal/POM Extruded tube up to 100mm (4”) dia
- Acetal/POM Extruded rod up to 90mm (3.5”) dia
- Acetal/POM Moulded sheet up to 500mm x 500mm x 40mm (19.5” x 19.5” x 1.5”)
|
Properties |
Unit |
Value |
Method |
|
Specific Gravity |
1.42 |
ASTM D792 |
|
|
Tensile Strength |
MPa |
65 to 70 |
ASTM D638 |
|
Elongation |
% |
30 to 80 |
% |
|
Shore D Hardness |
86 |
ASTM D2240 |
|
|
Tensile Modulus |
GPa |
2.8 |
ASTM D638 |
|
Flexural Strength |
MPa |
94 |
ASTM D790 |
|
Compressive Strength |
MPa |
110 |
ASTM D695 |
|
Deformation Under Load (23°C, 14 MPa) |
% |
0.5 |
ASTM D621 |
|
Dielectric Strength |
kV/mm |
20 |
ASTM D149 |
|
Flammability Rating |
HB |
UL 94 |
|
|
Maximum Working Temperature |
°C |
85 (145 on short term) |
The information in this table represents typical figures intended for reference and comparison purposes only.
