Acetal, Polyoxymethylene (POM) You Need To Know
Acetal, also known as Polyoxymethylene (POM), polyformaldehyde, and polyacetal, is one of the engineering plastics, the density is from 1.410 to 1.420 g/cm. 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.
Some special physical properties can be obtained or enhanced by changing the ratio between acetal plastic and other material or annexing agent, for example, higher toughness, flame retardant property, and electrostatic discharge (ESD).
The nature color of acetal plastic 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 pressuring. The common forming methods are injection molding and extrusion.
Delrin (a brand of DuPont) is a famous homopolymer acetal plastic (Polyoxymethylene POM), Compared to copolymer, it is easier to be produced, and people like calling it Delrin. Therefore, it is a common material to be found in the market.
UVTECO is a leading supplier of acetal plastic in China, we can provide high-quality plastic granules, acetal sheets, Delrin rods, acetal tubes, and machining acetal services.
Acetal, Polyoxymethylene (POM) Plastic Product
Grades of Acetal (POM)
Acetal Sheet
Acetal sheet, also known as Delrin sheet, is extruded by Polyoxymethylene Plastic. UVTECO provides different Delrin sheets by using different acetal plastic, including copolymer, homopolymer, general-purpose Acetal (POM) Sheets, food-grade Acetal (POM) sheets, Static Control (ESD) Acetal (POM) sheets, colored Delrin sheets, etc.
UVTECO provides Delrin sheets with standard size, cutting service, and machining service.
| Item | Thickness (mm) | Standard size (mm) | Color |
|---|---|---|---|
| General-purpose Delrin Sheet | From 5mm to 100mm | 610*1220mm; 610*1250mm; 1000*2000mm; Custom size | Black, White, Blue, Yellow, Red, Green, custom color |
ESD Acetal sheet
ESD Acetal Sheet, also called “Static Dissipative Acetal”, “anti-static Acetal (POM)” or “ESD Acetal (POM)”, is a permanently static dissipative material, the surface resistance is from 10^6 to 10^9 Ohm. It also offers excellent strength and stiffness, good chemical resistance, and great machinability.
| Item | Thickness (mm) | Standard size (mm) | Color |
|---|---|---|---|
| ESD Acetal Sheet | From 5mm to 100mm | 610*1220mm; 610*1250mm; 1000*2000mm; Custom size | Nature, White, black |
Acetal(POM) Rod
Acetal Rod, also known as Delrin Rod and POM Rod, is extruded by acetal plastic. UVTECT is a leading supplier of POM Rods in China, the diameters from 3mm to 200mm, the colors are white, black, or custom colors.
We are stocking the frequently-used Delrin Rods for fast delivery, meantime, we can cut/machine it according to drawings.
| Item | Color | Diameter (mm) | Standard Length (mm) |
|---|---|---|---|
| Delrin/Acetal/POM Rod | White, Black | 3mm, 4mm, 5mm, 6mm, 8mm, 10mm,12mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm | 1000mm |
| Delrin/Acetal/POM Rod | White, Black | 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, 170mm, 180mm, 190mm, 200mm | 1000mm |
| Delrin/Acetal/POM Rod | White, Black | 210mm, 230mm, 250mm, 280mm, 300mm, 330mm, 350mm |
Acetal Tube
Acetal Tube, also known as Delrin tube and POM Tube, is extruded by acetal plastic (Polyoxymethylene). UVTECT is a leading supplier of Acetal Tubes in China, the OD (outer diameter) is from 8mm to 200mm, and the colors are white, black, or custom colors.
We are stocking the frequently-used Acetal Tubes for fast delivery, meantime, we can cut/machine it according to drawings.
Basic information
| Item | Description |
|---|---|
| Product name | Acetal, Polyoxymethylene, or POM Plastic |
| Available color | Natural color (white), Black, Dark Brown (POM-H+PTFE) |
Physical Properties
| Physical Properties | Testing Method | Unit | Value |
|---|---|---|---|
| Density | ASTM D792 | g/cc | 1.41~1.5 |
| Water absorption (Dipping in water at 23°C for 24 hours) | ASTM D570 | % | 16~20 |
Mechanical Properties
| Mechanical Properties | Testing Method | Unit | Value |
|---|---|---|---|
| Tensile yield strength | ASTM D638 | psi/MPa | 9300/64 |
| Tensile modulus Elasticity | ISO 527 | MPa | 2600 |
| Tensile Elongation (Break) | ISO 527 | % | >30 |
| Flexural Strength | ASTM D790 | psi/MPa | 11000/75 |
Thermal Properties
| Thermal Properties | Testing Method | Unit | Value |
|---|---|---|---|
| Coefficient of Linear Thermal Expansion | Average value between 23 and 100°C | m/(mk) | 105×10^-6 |
| Heat deflection temperature | ISO 752 | °F/°C | 230/110 |
| Melting temperature | °F/°C | 330/165 | |
| Max. operating temperature | °F/°C | 180/82 | |
| Flammability rating | UL94 | HB |
Electrical Properties
| Electrical Properties | Testing Method | Unit | Value |
|---|---|---|---|
| Dielectric strength | IEC60243 | kv/nn | >40 |
| Dielectric constant | IEC60250 | 10^6 Hz | 3.8 |
| Dissipation Factor | 0.005 | ||
| Volume Resistivity | IEC60093 | ohm (Ω) | 10^13 |
Remark
Feature of UVTECO Acetal plastic
Can’t find what you need? Or Need custom Delrin/Acetal Plastic?
Leading Supplier of Acetal, Polyoxymethylene (POM) In China
As one of the leading suppliers of Acetal plastic (POM) in China, UVTECO is providing all forms of POM including glass-filled acetal, Acetal sheets/rods/tubes, and acetal parts by injection moulding and CNC machining.
As an ISO-certificated company, UVTECO is stocking the frequently-used Acetal sheets/rods/tubes for fast delivery, including nature 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.
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