Material datasheet · Engineering thermoplastic
Acetal Homopolymer (Polyoxymethylene)
UNS — · Stress-relieved extruded rod/plate; cast for thick sections
The general-purpose engineering plastic. Strong, stiff, low-friction, easy to machine.
Chemical composition
Nominal % by weight.
| Element | % by wt |
|---|---|
| C, H, O (acetal homopolymer) | — |
Applicable specifications
AMS / ASTM / MIL.
- ASTM D6100 (Group 1)
- DuPont Delrin 150
- FDA-compliant grades available
Machining guidance
CNC parameters and tooling.
Polished carbide; sharp positive rake; HSS works for low-volume
Watch for residual stress in extruded stock — can warp post-machining. Specify stress-relieved bar for tight-tolerance work.
Stock & cost
Forms and Q1 2026 pricing.
- Bead blast (matte)
- Color (purchased pigmented)
Typical applications
Where Delrin / POM is the right pick.
- Gears
- Cams
- Bushings
- Snap-fits
- Valve seats
- Conveyor components
Alternative materials
Substitute or upgrade options.
- Acetal copolymer (better hot water)
- Nylon (impact resistance)
- PEEK (high T)
Digital Machine · Quick-Turn CNC · California
Machine your part in Delrin / POM.
Production CNC milling and turning. Confirm material, inspection and documentation requirements when requesting a quote.
Keep exploring
Related tools & references
Speeds, feeds, tooling, and chip strategy.
SFM, RPM, and feed rate for this material.
Compare alloys by strength, weight, temperature, and cost.
Estimate part weight from Delrin / POM stock.
Aerospace specs that call out this alloy.