Short answer: POM ESD and conductive POM should not be treated as interchangeable. POM ESD is a starting point when an application requires electrostatic-charge control; conductive POM should be evaluated when the specification calls for a lower electrical-resistance range or a defined conductive function. In either case, select by the exact-grade data sheet, test conditions, and finished-part acceptance criterion—not by color or the word ‘antistatic.’
Start with the electrical requirement, not the trade name
A request may use terms such as acetal ESD, Delrin ESD, ‘antistatic,’ or ‘conductive.’ Those terms can start the material discussion, but they do not identify an exact grade. Before choosing a material, define the required electrical behavior, how it will be measured, and the conditions in which the part will operate.
What the reference data sheets show
The figures below come from reference data sheets reviewed for this guide. They are not universal specifications for every POM ESD, conductive POM, or natural POM grade.
| Reference | When to investigate it | Listed electrical values |
|---|---|---|
| Reference POM ESD | When the requirement calls for electrostatic-charge control within a documented range. | ‘Sheet resistivity’ of 10⁶–10⁸ Ω and volume resistivity of 10⁶–10⁸ Ω·cm; the sheet lists 23°C/50%RH. |
| Reference conductive POM | When the documented requirement calls for a lower resistance range or defined conductive function. | ‘Sheet resistivity’ of 10³–10⁵ Ω and volume resistivity of 10³–10⁵ Ω·cm; the sheet identifies ACL-800. |
| Reference natural POM | When the part has no ESD or conductive requirement and selection is primarily mechanical, thermal, and dimensional. | ‘Sheet resistivity’ and volume resistivity of ≥10¹³; the sheet lists 23°C/50%RH. |
Important: the sheets do not state identical test conditions. Their ranges can guide a selection discussion, but they do not certify performance, compare brands, or accept a finished part. Request the current data sheet for the exact grade and confirm the test method required by your process.
POM ESD vs. conductive POM decision matrix
| Selection question | Starting point | What to confirm |
|---|---|---|
| Does the application require electrostatic-charge control? | Evaluate POM ESD. | Requested electrical range, measurement method, environmental conditions, and part geometry. |
| Does the drawing or process require lower electrical resistance or a conductive function? | Evaluate conductive POM. | Electrical objective, contact points, continuity criterion where applicable, and final-part validation. |
| Is there no ESD or conductive requirement? | Evaluate natural POM according to the mechanical function. | Load, temperature, wear, friction, environment, and tolerances required by the application. |
| Is the part subject to a critical quality or compliance requirement? | Do not choose only by material family. | Current data sheet, required documentation, test method, and any customer-defined sample or validation. |
When natural POM may be the better option
Natural POM may be an option to evaluate when the part does not need electrostatic control or a conductive function. In that case, selection should focus on the real mechanical, thermal, dimensional, and environmental requirements. The natural-POM reference sheet lists much higher electrical values, so it should not be assumed to replace an ESD or conductive grade when an electrical requirement exists.
What to include in a material request
- Required electrical behavior and target range, if one exists.
- Test method, environmental condition, and acceptance criterion.
- Part function, operating temperature, and use environment.
- Required form, dimensions, quantity, and drawing if available.
- Applicable technical documentation, traceability, or internal requirements.
Frequently asked questions
Are POM ESD and conductive POM the same?
No. The reviewed reference sheets list different electrical ranges. Selection must be based on the exact grade, application requirement, and verification method.
Does black color identify the correct grade?
No. Color does not confirm an electrical range, formulation, documentation, or finished-part performance. Use the exact-grade data sheet and required test criterion.
Are the table values universal, or can they accept a finished part?
No. They are reference-sheet values with test conditions that are not identical to one another. Acceptance should be defined by current documentation, the agreed method, and final-part validation when applicable.
Can natural POM replace an ESD or conductive grade?
Only when the application has no electrostatic-control or conductive requirement. When an electrical requirement exists, the grade must be selected and verified for that specific use.
What should I include in a material request?
Share the required electrical behavior, test conditions and method, part function, temperature, form, dimensions, quantity, and required documentation.
Comparing options? For a material quote, share those requirements through PomDepot contact. That lets the conversation start with the electrical behavior and grade documentation rather than an assumption based on a name or color.