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Plastic Material-POM

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Introduction of POM

Polyoxymethylene (POM), commonly known as acetal or Delrin, is a high-performance engineering thermoplastic with a wide range of applications due to its exceptional mechanical properties and versatile processing capabilities. POM is characterized by its low coefficient of friction, high stiffness, excellent dimensional stability, and resistance to wear and creep. It is often chosen for applications that require precision, durability, and resistance to moisture and chemicals.

POM Information

Process: Injection Molding, Insert Molding, Overmolding, CNC Machining, 3D Printing

Colors: custom-colored


Price: High-range of plastic material costs

Application: gears, bearings, sliding components, automotive parts, medical devices, and consumer goods, etc.

Recommended Wall Thickness: 1mm-3mm

POM Properties

POM is synthesized from formaldehyde through a polymerization process, resulting in a linear polymer structure with repeating -CH2O- units. This structure contributes to its remarkable properties. Here are the general POM properties.



Density (g/cm³)

1.41- 1.43

Shrinkage Rate (%)

1.5 – 3.0

Pockwell Hardness

R118 – R122

Tensile Strength at Yield (MPa)

55- 75

Elongation at Break (%)

20- 50

Flexural Modulus (GPa)

2.5- 3

Flexural Strength (MPa)

70- 100

Drying Temperature (°C)

 80 – 90

Drying Time (hrs)

2 – 4

Melt Temperature (°C)

165- 175

Mold Temperature (°C)

80– 100

FAQ About POM Plastic Material

Additives like lubricants, reinforcing agents (such as glass fibers), UV stabilizers, and flame retardants can be incorporated into POM formulations to enhance specific properties.

POM can be used for food contact applications, especially when compliant grades are chosen. Food-safe POM formulations are available, meeting regulatory requirements.

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