Nylon vs POM (Acetal/Delrin): Choosing Between Two Engineering Plastics

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Nylon vs POM Acetal comparison
Nylon and POM are both engineering plastics but serve different purposes

Nylon and POM (polyoxymethylene, also known as acetal or Delrin) are two of the most important engineering plastics. Both are widely used for precision mechanical components, but their distinctly different properties make each better suited for specific applications.

Mechanical Properties Head-to-Head

속성 PA6 (Nylon) POM(아세탈)
인장 강도(MPa) 70-85 60-70
굴곡 탄성률(GPa) 2.5-3.0 2.6-2.9
휴식 시 연신율 (%) 50-150 25-75
밀도(g/cm³) 1.14 1.41
Mechanical properties radar chart
Nylon leads in strength and toughness; POM excels in dimensional stability

Wear and Friction: A Critical Difference

POM’s key advantage over nylon is its excellent wear resistance and low coefficient of friction (0.2-0.35 against steel), making it preferred for gears, bearings, and sliding components.

수분 흡수

Moisture absorption comparison
POM absorbs virtually no water, while nylon shows significant moisture uptake

POM absorbs less than 0.3% water even at saturation, while nylon absorbs 2.5-9.5% depending on conditions. This means POM parts maintain consistent dimensions regardless of humidity.

내화학성

Nylon is resistant to oils, greases, fuels, and alkalis. POM offers excellent resistance to organic solvents, oils, and neutral chemicals but is attacked by strong acids.

Thermal Properties

속성 PA6 POM
녹는점(°C) 220 165-175
HDT at 1.8 MPa (°C) 65 95-110
Continuous Use Temp (°C) 80-100 90-100
Thermal properties comparison
POM maintains stiffness better at elevated temperatures

Application Guide

Choose Nylon When:

  • Impact resistance and toughness are critical
  • Parts experience dynamic loading
  • Higher temperature resistance is needed (PA66)

Choose POM When:

  • Dimensional stability in varying humidity is critical
  • Low friction and wear resistance are priorities
  • Parts operate in wet environments
  • Precision mechanical components are needed

Our Capabilities

With over 300 CNC machines, we produce more than 10,000 pieces daily with tolerances as tight as ±0.005mm. We accept MOQ from 1 piece, with delivery times ranging from 24 hours to 15 days. We machine both nylon and POM for precision applications. Get a quote within 24 hours.

자주 묻는 질문

When is Nylon vs POM (Acetal/Delrin): Choosing Between Two Engineering Plastics a good option?

Nylon vs POM (Acetal/Delrin): Choosing Between Two Engineering Plastics is a good option when fast iteration, complex geometry, low tooling cost, or low-volume production is more important than molded-part unit cost.

What should be checked before choosing Nylon vs POM (Acetal/Delrin): Choosing Between Two Engineering Plastics?

부품 크기, 재료 특성, 표면 마감, 치수 공차, 열 노출, 하중 방향, 후처리가 필요한지 여부를 확인합니다.

How does Nylon vs POM (Acetal/Delrin): Choosing Between Two Engineering Plastics compare with CNC machining?

3D 프린팅은 복잡한 형상을 빠르게 제작할 수 있는 반면, CNC 가공은 정밀한 표면, 엄격한 공차 및 생산 등급 재료에 더 적합한 경우가 많습니다.

What affects the cost of Nylon vs POM (Acetal/Delrin): Choosing Between Two Engineering Plastics?

비용은 재료, 빌드 볼륨, 프린트 시간, 레이어 높이, 서포트 제거, 마감, 검사 및 빌드 내 부품 수에 따라 달라집니다.

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