Delrin 150 acetal homopolymer
Delrin 150 is a high-viscosity grade in the stock-shapes portfolio. The suffix, color and fabricator still matter; FG150 food-grade status does not transfer to ordinary 150.
Open identity and conditions →Materials / Existing comparison guide
Delrin and Nylon need a shared comparison basis.
Start with the exact polymer and supplier product. A moisture-absorption number is not a dimensional-growth allowance.
Nylon 6/6 (PA66)
Moisture conditioning changes dimensions and mechanical behavior. PA66 is distinct from cast PA6; dry molded resin data cannot stand in for conditioned machined stock.
Open identity and conditions →Acetal copolymer (POM-C)
POM-C is a copolymer identity; it is not Delrin POM-H. Use the exact stock-shape grade when comparing absorption, porosity or dimensional behavior.
Open identity and conditions →Establish the same conditions
- Identify the manufacturer, exact compound and product form. Delrin 150 is not a generic name for POM-C.
- Record dry, conditioned or immersed state, duration, temperature and measurement conditions. Stock shapes and injection-molded specimens are different evidence objects.
- For sliding or wear, record mating material, surface, pressure, speed and lubrication. No single friction coefficient determines every pairing.
- Obtain creep and dimensional data for the actual load, time and environment. Mass uptake cannot directly determine linear expansion or machining compensation.
The former article’s universal winner table, fixed moisture multipliers and temperature shortcuts have been removed. The referenced evidence supports identity and specific tests, not a universal winner.
Sources and what they establish
Reviewed 23 October 2026. A source’s publication date and the review date are different. The scope below identifies the fields checked.
Delrin parts and shapes portfolio
Delrin 150 is a high-viscosity homopolymer grade. FG150 and RAFG150 are separately named variants; not all Delrin grades are interchangeable.
Delrin parts and shapes portfolio ↗Ensinger TECAMID 66 natural, version AD 2023-07-19
Specific machined extruded stock-shape example. Absorption specimen approximately Ø50 × 13 mm at 23 °C, ISO 62; not a dry-molded resin strength guarantee.
Ensinger TECAMID 66 natural, version AD 2023-07-19 ↗Ensinger TECAFORM AH natural stock-shape datasheet
Unfilled POM-C stock-shape example; ISO-method values and 24 h / 96 h absorption at 23 °C. Regional/product revisions must not be mixed.
Ensinger TECAFORM AH natural stock-shape datasheet ↗Source identity, a named product example and a supplied-batch certificate are different evidence. Cross-standard similarity does not approve substitution.