Delrin is DuPont’s brand name for POM homopolymer, while generic “acetal” typically refers to POM copolymer. Both are polyoxymethylene engineering plastics used in precision mechanical applications.
POM Homopolymer (Delrin) Properties
POM homopolymer offers tensile strength of 70 MPa (highest of all acetal grades), flexural modulus of 2,800 MPa, elongation at break of 40% (most ductile), and excellent fatigue resistance for cyclic loading applications.
POM Copolymer Properties
POM copolymer provides better chemical resistance against acids and hot water, excellent hot stamping capability for decorated parts, improved stability with less centerline porosity, and typically lower cost than homopolymer.
Selection Guide
Choose homopolymer (Delrin type) for precision gears with high loads, snap-fit designs, and applications requiring highest strength. Choose copolymer for chemical exposure environments, decorated parts, and cost-sensitive applications. For high-strength applications, consider our PA66-CF30.
Source POM Materials
As a specialized source manufacturer, we supply both POM homopolymer and copolymer in rod and sheet forms. Свяжитесь с нами for technical support and pricing.
ЧАСТО ЗАДАВАЕМЫЕ ВОПРОСЫ
How do you know whether HDPE vs UHMW-PE — Which Polyethylene Is Right for Your Application? fits a part?
HDPE vs UHMW-PE — Which Polyethylene Is Right for Your Application? fits a part when its load capacity, temperature range, moisture exposure, wear behavior, and processing method match the real service conditions.
What properties should be checked for HDPE vs UHMW-PE — Which Polyethylene Is Right for Your Application??
Проверить прочность, жесткость, ударопрочность, термостойкость, влагопоглощение, стабильность размеров, коэффициент трения, износостойкость и химическую совместимость.
What is the biggest selection risk for HDPE vs UHMW-PE — Which Polyethylene Is Right for Your Application??
Наибольший риск заключается в том, чтобы ориентироваться на значения из технического паспорта, не учитывая реальные условия эксплуатации, метод обработки, геометрию детали и долгосрочную эксплуатацию.
When should HDPE vs UHMW-PE — Which Polyethylene Is Right for Your Application? be tested before production?
Проведение испытаний рекомендуется в случаях, когда деталь подвергается воздействию нагрузок, высоких температур, химических веществ, влаги, должна соответствовать жестким допускам, нормативным требованиям или эксплуатироваться в новых условиях.
