MEAM.Design - Materials - Polyoxymethylene (POM, Delrin)
Instron Testing Video and Data
Tension Testing (mov) - Excel Data
Material Properties
| Density | 1.4-1.5 | g/cc |
| UTS | 9 | kpsi |
| Hardness | - | - |
| Glass Transition | 125 | C |
| Melting | 175 | C |
| Price point | - Per Foot | 3/4" rod, SmallParts ZRD-12-24 |
| Recycle | - |
History/Interest
Marketed as metal substitute
First synthesized by DuPont in 52, available starting in 60
Approved for use in food industry
Properties
Dim. stable, tough, high impact strength
Low coeff. of friction
Fair chem. resistance
Can cause allergic reactions (may want to wear gloves/mask)
Uses
Gears, pulley, impellers - good replacement for metals
Ski bindings (injection molded)
Paintball gun parts
Guitar picks
High-secuity lock wheels (resistant to X-ray decoding)
Manufacturing
Easily machined (similar to free-machining brass)
Not always dimensionally stable
Very difficult to bond - rough up surface first, cyanoacrylate does okay