CNC machining for POM (Delrin/Acetal) Parts

Renowned for its exceptional characteristics, POM stands as an engineering thermoplastic of choice for precision components. Boasting high stiffness, pinpoint accuracy, minimal friction, and effortless machinability, POM is the go-to material for applications demanding superior performance. Whether it’s ensuring structural integrity, reducing frictional resistance, or maintaining impeccable dimensional stability, POM excels across a myriad of industries and applications, delivering unmatched reliability and precision.

CNC machining POM (Delrin/Acetal) Materials

Acetal, known for its outstanding mechanical properties, offers a unique blend of characteristics unmatched by most metals or other plastics. Delrin® plastic, a type of acetal, exhibits strength, rigidity, and resistance to impact, abrasion, friction, and fatigue.

Its exceptional dimensional stability during high-precision machining ensures reliable performance.

Additionally, acetal demonstrates resilience against moisture, gasoline, solvents, and various neutral chemicals at room temperature. Parts made with extruded POM boast a glossy surface finish, enhancing their aesthetic appeal.

Due to its compatibility with various manufacturing processes such as CNC machining, injection molding, extrusion, compression molding, and rotational casting, acetal provides product teams with flexibility in selecting the most suitable method based on their budget and requirements.

However, it’s important to note that bonding Delrin® plastic can be challenging.

Overall, acetal’s versatility and robust properties make it an ideal choice for a wide range of applications across industries requiring strength, precision, and resistance to environmental factors.

The mechanical properties for Delrin® 100 NC010

one of the most popular formulations, include:

– Tensile modulus: 2900 MPa
– Yield stress: 71 MPa
– Yield strain: 26%
– Density: 1420 kg/m3
– Charpy notched impact strength, +23°C: 15 kJ/m2
– Coefficient of linear thermal expansion, normal: 110 E-6/K
– Water absorption: 0.9%

It’s important to note that acetal material properties may vary depending on the formulation used.

CNC machining for POM (DelrinAcetal) Parts (1)

Design tips

Wall Thickness                                               0.75 mm
Tolerances                                                       ±0.125mm (±0.005″)
Max part size                                                   200 x 80 x 100 cm