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Carbonfiber hero 2x

Continuous Fiber

Carbon Fiber FR

Material Properties

Carbon Fiber FR is a flame-retardant variant of Markforged’s unique, ultra-high-strength Continuous Carbon Fiber — when used to reinforce a Composite Base material like Onyx FR, it can yield parts as strong as 6061-T6 Aluminum. It’s extremely stiff and strong, and can be precisely laid down in a wide variety of geometries. Programmatically trace curved features, reinforce holes, and mimic unidirectional fiber layups — all within a few clicks.


  • Cabin Components
  • Brackets & Mounts
  • MRO & Spare Parts
  • End-Use Parts
  • Functional Prototypes
Carbon Fiber FR flexural strength desktop

Flexural Strength

  • 540MPa

    Carbon Fiber Reinforced

Carbon Fiber FR flexural stiffness desktop

Flexural Stiffness

  • 50GPa

    Carbon Fiber Reinforced