# POM-C

CNC

Strong and Rigid, Engineering Plastic, CNC Machined, POM-C, Polyoxymethylene (Acetal), Delrin®

## Material Info

### About

CNC-machined POM-C (Polyoxymethylene) is a high-performance engineering thermoplastic known for its exceptional strength, low friction, and outstanding dimensional stability. Available in White and Black, this material is ideal for precision components used in mechanical, automotive, and industrial applications.

### Color & Finishes

White

Black

**Surface Roughness**

Standard finish is Ra 3.2 μm, unless otherwise specified.

### Technology

- CNC

[POM white](/content/wp-content/uploads/2026/02/POM-white.pdf) [POM Black](/content/wp-content/uploads/2026/02/POM-Black.pdf)

### Material Properties

- **Tensile Strength**: 60 MPa  
- **Tensile Modulus**: 3000 MPa  
- **Elongation at Break**: 20%  
- **HDT 0.45 MPa**: 156 °C

### Description

Material Highlights:  
POM-C offers excellent mechanical strength, dimensional stability, low friction, and high wear resistance — making it ideal for high-precision, durable parts.

Chemical Resistance:  
Resistant to many solvents, oils, fuels, and weak acids and alkalis, making it well-suited for demanding industrial environments.

Moisture Resistance:  
Very low water absorption ensures consistent mechanical properties even in humid or wet conditions.

Applications:  
Used for functional prototypes, gears, bearings, bushings, housings, jigs, and fixtures — especially where precision and wear resistance are critical.

## Design Guidelines

### Bounding Box

**Maximum Bounding Box**  
3-axis: 480 x 280 x 80mm  
5-axis: 480 x 180 x 80mm

**Minimum Bounding Box**  
10 x 10 x 3 mm

### Walls

**Supported Walls**: 1.5 mm  
**Unsupported Walls**: 1.5 mm

### Wires

**Supported Wires**: 1.5 mm  
**Unsupported Wires**: 1.5 mm

### Details

**Embossed Details**: 0.25mm  
**Engraved Details**: 0.25mm

### Clearance

**Minimum**: 0.2 mm

### Sprues

**Supported**  
Sprues are wires that keep two or more parts together. Parts should be connected with a minimum of two sprues each.

### Multiple Parts

No

### Parts in File

1

### Accuracy

Where no tolerance is specified, parts are manufactured to **DIN ISO 2768-mK** (fine class general tolerances) as standard.

## Related Materials

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High Strength, Durability  
High ductility  
Very high stiffness  
High Accuracy  
**Application:** Functional parts, structural components, precision engineering, aerospace & defence prototypes, marine hardware, industrial fixtures  
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High ductility  
Very high stiffness  
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