What is the density of POM? Comprehensive analysis of the properties of POM materials
What is the density of POM? This is a key question for chemical industry practitioners and materials engineers, POM (Polyoxymethylene) is a widely used engineering plastics in the manufacturing industry, and its density has a direct impact on its application scenarios and performance. This paper will analyse in detail the density of POM, its influencing factors and its significance in practical applications.
1. Basic introduction of POM material
POM (polyoxymethylene) is a highly crystalline thermoplastic with high strength, good wear resistance and low coefficient of friction. Because of these excellent physical properties, POM is widely used in the manufacture of gears, bearings, slides, fasteners and other mechanical parts. Before discussing “what is the density of POM”, it is necessary to understand the basic properties of POM, which helps to better understand the effect of its density on its performance. 2.
2. Numerical range of POM density
Typically, the density of POM ranges from 1.41 g/cm³ to 1.43 g/cm³. Specifically, the density of POM is mainly influenced by the structure of its polymer chains and the process parameters used during production. Because POM has a high degree of crystallinity, this results in a relatively high density, which is in the upper middle range of industrial plastics. This density allows POM to excel in abrasion resistance and dimensional stability.
3. Factors affecting POM density
While the range of POM densities is relatively fixed, the density of POM may vary slightly from manufacturer to manufacturer and application scenario to application scenario. Factors affecting POM density include:

Crystallinity: the higher the crystallinity of a POM material, the higher its density. Higher crystallinity usually means the material has better mechanical strength and wear resistance.
Fillers and additives: In some special applications, fillers or additives may be added to improve the heat resistance or electrical properties of POM. The addition of these materials may slightly alter the density of the POM.
Processing: Different processing techniques, such as injection moulding, extrusion moulding, etc., may result in a slight change in the density of POM.

4. POM density of the practical application of the significance of
In practical applications, understanding “what is the density of POM” can help engineers choose the right material. Higher density usually means that the material has better mechanical properties, but may also lead to an increase in weight. In some weight-sensitive applications, such as automotive parts manufacturing, a balance between performance and density may need to be found.
The density of POM also affects its processing characteristics and the dimensional stability of the finished product. Higher density materials are more likely to be dimensionally stable during the moulding process, while lower density materials may be better suited to certain lightweighting requirements.
5. Summary
What the density of POM is depends on a number of factors, including crystallinity, fillers and processing. In general, POM densities range from 1.41 g/cm³ to 1.43 g/cm³, a density that makes POM materials excel in many industrial applications. Understanding and applying the density characteristics of POM is essential to improving product performance and optimising manufacturing processes.
We hope that through this article, you have a deeper understanding of “what is the density of POM”. For those engineers who seek precision and performance in material selection and application, this knowledge will help to better apply POM materials.