CNC · Materials for comparison · Engineering
POM-C (Delrin®-like)
A low-friction, dimensionally stable engineering plastic; gears and bushings.
What is POM-C (Delrin®-like)?
With its low friction coefficient, high stiffness and dimensional stability, POM is the classic plastic for precision mechanical parts. It machines easily with CNC but is difficult to print with FDM.
- High strength
- Chemical resistant
Technical data
Typical values compiled from common manufacturer datasheets; they vary by brand and grade.
| Density | ≈ 1.41 g/cm³ |
|---|---|
| Tensile strength | ≈ 60 – 70 MPa |
| Elongation at break | ≈ 25 – 40% |
| Tensile modulus | ≈ 2.8 – 3.0 GPa |
Design guidelines for POM-C (Delrin®-like)
General guidelines for CNC technology. All design guidelines
- Minimum wall thickness0.8 – 1.5 mm
- Smallest detailDepends on tool diameter
- Clearance for moving parts0.05 – 0.1 mm
- Text and logosEngraved ≥ 0.5 mm
- Minimum hole diameterØ 1 mm
- Unsupported overhang angleUndercuts require special tools
Applications
- Gears and bushings
- Sliding parts
- Precision mechanical components
Advantages
- Low friction
- Dimensional stability
Limitations
- Difficult to glue
- Not suited to 3D printing
Comparison
POM-C (Delrin®-like) and alternatives
| Property | POM-C (Delrin®-like) | Nylon (PA6 / PA12) | PA-CF | PA12 (Nylon 12) |
|---|---|---|---|---|
| Density | 1.41 g/cm³ | 1.1 g/cm³ | 1.2 g/cm³ | 1 g/cm³ |
| Tensile strength | 65 MPa | 55 MPa | 85 MPa | 48 MPa |
| Elongation at break | 30 % | 50 % | 3 % | 18 % |
| Modulus (stiffness) | 2.9 GPa | 1.6 GPa | 6 GPa | 1.7 GPa |
| Heat deflection (0.45 MPa) | 155 °C | 80 °C | 160 °C | 165 °C |
Values are averages of typical ranges; see each material page for details.
Good to know
Frequently asked questions about POM-C (Delrin®-like)
What is POM-C (Delrin®-like)?
With its low friction coefficient, high stiffness and dimensional stability, POM is the classic plastic for precision mechanical parts. It machines easily with CNC but is difficult to print with FDM.
Is POM-C (Delrin®-like) heat resistant?
The heat deflection temperature (0.45 MPa) of POM-C (Delrin®-like) is about 155 °C. This is high; it can be used near engine bays, in hot air and steam.
Can POM-C (Delrin®-like) be used outdoors?
It can degrade under prolonged sunlight and UV light. For outdoor use, ASA or another UV-resistant material should be preferred.
Which parts are made with POM-C (Delrin®-like)?
POM-C (Delrin®-like) is typically used in applications such as gears and bushings, sliding parts, precision mechanical components.
Which material can be used instead of POM-C (Delrin®-like)?
Depending on the application, Nylon (PA6 / PA12), PA-CF, PA12 (Nylon 12) can be alternatives. You can see the differences in the comparison tables on the material pages.
Does TAİ Robotik produce with POM-C (Delrin®-like)?
For POM-C (Delrin®-like), send us your part's dimensions, quantity and operating conditions; we will determine the best production route and, if needed, an equivalent alternative together.
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