Acetal Plastic in all forms

Acetal is also called as Polyoxymethylene(POM) Sheet, Acetal Rod, Acetal Tube, and Machining Service…

Acetal, Polyoxymethylene (POM) You Need To Know

Acetal, also known as polyoxymethylene (POM), polyformaldehyde, and polyacetal, is one of the engineering plastics, its density ranges from 1.41 to 1.5 g/cm3. It is mainly used for precision mechanical components, for example, gears, pulleys, rollers, bearings, housing parts, bushing, cams, valves, seals, gear wheels, and other parts with high stiffness, low friction, and excellent dimensional stability, low thermal expansion because acetal plastic offers high strength, hardness, and rigidity to −40°C.

Changing the ratio between acetal plastic and another material or annexing agent can obtain or enhance some special physical properties, such as higher toughness, flame retardant property, and electrostatic discharge (ESD).

Acetal plastic’s natural color is intrinsically opaque white because of its high crystalline composition, but it can be produced in a variety of colors by adding colorant. Normally, Acetal or POM plastic is supplied in plastic granules and can be formed into the desired shape by heating and pressing. The common forming methods are injection molding and extrusion.

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Acetal sheets
Colored Acetal

Specification of Acetal, Polyoxymethylene (POM) Plastic

Grade

  • Homopolymer
  • Copolymer
  • Unfilled
  • Food grade
  • Glass Filled
  • Metal detectable
  • PTFE filled
  • Static Dissipative
  • UV Resistant
  • Strength Improved
  • Toughness improved

Profile/Shape

  • Sheet
  • Film
  • Rod
  • Tube

Color

  • Nature (White)
  • Black
  • Green
  • Blue
  • Red
  • Yellow

Custom Service

  • Custom profile by extrusion;
  • Custom part by injection molding;
  • Custom part by CNC Machining;

Acetal Sheet

  • Thickness: From 3mm to 200mm
  • Width: from 650 mm to 1220mm
  • Length: from 1000 mm to 2440 mm

Acetal Film

  • Thickness: From 0.3mm to 3mm
  • Width: Up to 1220 mm

Acetal Rod

  • Diameter: From 2mm to 350mm
  • Length: 1000 mm or custom

Acetal Tube

  • Diameter: From 2.5mm to 1500mm
  • Length: 1000 mm or custom

Custom Profile

  • Extrusion process;
  • Custom profile;
  • Custom color;

Injection molding part

  • Custon Shape;
  • Custom color;
Remark
  • All sizes can be customized according to the requirements of clients;
  • Machining services are available;

Properties of Acetal, Polyoxymethylene (POM) plastic

ItemDescription
Product nameAcetal, Polyoxymethylene, or POM Plastic
Available colorNature (White), Black, Green, Blue, Red, Yellow, Custom color
DensityFrom 1.41 g/cm3 to 1.5 g/cm3
FlammabilityHB/UL94

Mechanical PropertiesTesting MethodUnitValue
Tensile yield strengthASTM D638psi/MPa9300/64
Tensile modulus ElasticityISO 527MPa2600
Tensile Elongation (Break)ISO 527%>30
Flexural StrengthASTM D790psi/MPa11000/75

Physical PropertiesTesting MethodUnitValue
DensityASTM D792g/cc1.41~1.5
Water absorption
(Dipping in water at 23°C for 24 hours)		ASTM D570%16~20

Thermal PropertiesTesting MethodUnitValue
Coefficient of Linear Thermal ExpansionAverage value between 23 and 100°Cm/(mk)105×10^-6
Heat deflection temperatureISO 752°F/°C230/110
Melting temperature°F/°C330/165
Max. operating temperature°F/°C180/82

Electrical PropertiesTesting MethodUnitValue
Dielectric strengthIEC60243kv/nn>40
Dielectric constantIEC6025010^6 Hz3.8
Dissipation Factor0.005
Volume ResistivityIEC60093ohm (Ω)10^13

Main Usage of Acetal Plastic

  • Automotive trim parts
  • Bearings and bushings
  • Boat accessories
  • Electronic component housings
  • Pump and valve parts
  • Scraper blade
  • Rollers and Gears;
  • Valves and Manifolds
  • Wear parts;
  • Industrial parts by injection molding;

Main Feature of Acetal Plastic

  • Outstanding wear resistance and sliding properties;
  • Good machinability;
  • Low water absorption rate and good chemical resistance;
  • High impact resistance, even at low temperatures;
  • Good dimensional stability and creep resistance, when machined or worked;
  • Low moisture absorption;
  • Excellent electrical properties;
  • Unfilled grade is FDA compliant;

Industry

  • Electrical and 3C;
  • Energy Industry;
  • Aircraft & Aerospace Industry;
  • Medical;
  • Food processing;
  • Low moisture absorption;
  • Automobile Industry;

Can’t find what you need? Or Need custom Acetal/POM Plastic?

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Leading Supplier of Acetal, Polyoxymethylene (POM) In China

As one of the leading suppliers of Acetal plastic (POM) in China, UVTECO provides all forms of POM, including glass-filled Acetal, Acetal sheets/rods/tubes, and acetal parts by injection molding and CNC machining.

As an ISO-certified company, UVTECO stocks the frequently-used Acetal sheets/rods/tubes for fast delivery, including natural color, white color, and black color. Meantime, providing high-quality POM-based products and parts/components for more than 2500 clients from more than 45 countries, they are working in automation, automobile industry, medical industry, food industry, aerospace industry, appliance industry, electrical & electronic, etc.

Contact UVTECO for machining Acetal/POM service

Related Blogs about Acetal/POM Plastic

Frequently Asked Questions about Acetal/POM Plastic

We can machine Acetal or POM plastic to a part using a CNC machine, injection molding, and extrusion process.

No, Acetal Polyoxymethylene (POM) isn’t toxic. This is generally considered safe for use in its solid form. It is particularly used for its high stiffness, low friction, and excellent dimensional stability.

However, POM or acetal can release harmful gas only when it is heated above its decomposition temperature. The temperature ranges around 240°C, or 464°F.

Acetal, or Polyoxymethylene (POM) is a semi-crystalline engineering thermoplastic made of formaldehyde. The POM-making process includes generating anhydrous formaldehyde and polymerizing the formaldehyde.

The molecular structure of POM is (CH2O)n. It has two -OR groups bound to the functional group of a carbon.

Yes, you can laser engrave polyoxymethylene. It is highly suitable for laser engraving. POM is a strong and hard plastic. This characteristic makes it well-suited for laser engraving.

The laser engraving is safe, but it requires precision and the use of proper tools. We do laser engraving for POM.

Acetal or Polyoxymethylene (POM) has a wide range of applications. They are used in the automotive industry for trim parts. They are also used in boat accessories, bearing and bushing, pump, and valve parts.

Acetal is also used in wear parts, industrial parts, electronic component housing, mechanical gears, etc. We also manufacture medical products and sports equipment from POM.

POM plastic is very strong, durable, and has very good sliding properties. It also has excellent wear resistance and great dimensional stability. POM also absorbs very little water, which makes it good for water usage.

Compared to metal, POM has good design flexibility, high strength-to-weight ratio, and corrosion resistance.

POM Plastic has a high tensile strength of 9300 psi, which refers to very strong mechanical properties. This allows it to withstand very heavy loads without deformation.

It is highly impact-resistant and often considered as strong as metals. So, it is used alternatively to metal, where a lighter alternative is required.

Proper heat and pressure are applied to POM to mold it. Before that, POM resin is provided in granulated form.

However, extrusion, injection molding, compression molding, blow molding, or rotational molding are primarily used for POM. Injection molding and extrusion are the most used moldings.

Here are the basic characteristics of polyoxymethylene.

  • Strong, rigid, and tough.
  • Has good temperature resistance and can operate at around 90°C
  • Has very good chemical resistance.
  • Has good tensile strength but is easy to machine.
  • POM is creep- and fatigue-resistant.
  • POM has very good sliding properties, wear resistance, and water resistance features.

Acetal, Polyoxymethylene is naturally opaque white because of its high crystalline composition. So, nothing is seen through the POM sheet. It neither reflects nor emits light.

You will see this translucent thermoplastic polished or glossy finish. This is because of its rigidity and smooth surface texture.

There are different POM grades available for particular applications. Some of them are:

  • Homopolymer
  • Copolymer
  • Food grade
  • Metal detectable
  • UV-resistant
  • High-impact
  • Unreinforced grade
  • Reinforced POM
  • Low-friction POM
  • Unfilled POM
  • Strength-improved POM
  • Static Dissipative
  • Glass-filled, etc.

Hydrolysis resistance means the ability to withstand heat and humidity or withstand hot water. The hydrolysis resistance of standard homopolymer POM and copolymer POM differs.

Homopolymer has a hydrolysis resistance of 60°C. On the other hand, copolymer has a hydrolysis resistance of 85°C.

POM C means copolymer POM, and POM H means homopolymer POM. These are two types of acetal.

The main difference between them is in their structure. Single monomer polymerization produces POM H. It creates a regular crystalline molecular structure.

On the other hand,  two different monomer polymerization techniques create POM C. This results in a more amorphous structure.

The natural color of polyoxymethylene is opaque white. But you can dye it in many colors. The common colors they are dyed are usually black, green, blue, red, and yellow.

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