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Carbon-Filled Nylon vs. Glass-Filled Nylon: Which Should You Use?

4 min read

Both fillers make nylon stiffer and stronger. Glass does it cheaply; carbon fiber does it with less weight and adds electrical conductivity.

Side by side

Carbon-Filled NylonGlass-Filled Nylon
StiffnessHigher at the same fillHigh
WeightLighter for the same stiffnessHeavier
Static controlDissipative to conductiveInsulating
Wear against mating partsGenerally gentlerMore abrasive
ColorBlack onlyNatural, black or colored
Relative costHigherLower

Typical, general comparisons. Individual grades vary; check the data sheet.

Choose Carbon-Filled Nylon when

  • Maximum stiffness for the weight
  • Static dissipation (ESD) is needed
  • Better wear behavior in moving parts

Choose Glass-Filled Nylon when

  • Cost is the priority
  • You need color or electrical insulation
  • High-volume structural parts

Carbon-filled nylon & PP · Glass-filled nylon · ESD-safe parts · Tell us the grade you run now →

Choosing between Carbon-Filled Nylon and Glass-Filled Nylon?

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