Material
Delrin® (POM-H)
Delrin® (POM-H) is a high-strength acetal homopolymer known for superior stiffness, hardness, and creep resistance. It is the go-to material for high-load mechanical parts like heavy-duty gears, bearings, and precision fasteners.
Manufacturing processes
About
Delrin® is a homopolymer acetal that provides significantly higher tensile strength and stiffness than copolymer acetal (POM-C). It excels in applications requiring high fatigue resistance and impact strength, even at low temperatures. While it shares the low-friction and moisture-resistant qualities of POM-C, its tighter crystalline structure makes it harder and more resistant to creep under long-term loads. However, users should note its susceptibility to centerline porosity in thick sections and lower resistance to strong bases compared to copolymers. It is ideal for high-performance automotive and industrial components.
Technical Details
- Accuracy
- ±0.2% (lower limit of ±0.13 mm)
- Density
- 1.42 g/cm³
- Min. wall thickness
- -
Technical Properties
- Tensile strength
- 70 - 85 MPa
- Tensile modulus
- 3000 - 3500 MPa
- Tensile elongation
- 25 - 40%
- Flexural strength
- 90 - 110 MPa
- Flexural modulus
- 2800 - 3200 MPa
- Embossing
- min. 0.3 mm
- Engraving
- min. 0.3 mm
- Interlocking parts
- Yes
- Warping risk
- Moderate