Markforged Composite Materials Datasheet: Properties And Test Results.pdf

## Markforged Composite Materials Summary

Markforged offers a range of composite materials for 3D printing, categorized into Composite Base and Continuous Fiber.

Composite Base:

Onyx: A micro carbon fiber filled nylon with high strength, stiffness, surface finish, chemical resistance, and heat tolerance.
Onyx FR: Onyx with UL94 V-0 flame retardant certification.
Nylon: Smooth, non-abrasive, easily paintable, and suitable for cosmetic parts.
Onyx ESD: Static dissipative variant of Onyx meeting ESD safety standards.
Fiberglass & Kevlar®: Lower strength alternatives to carbon fiber but more cost effective, with Fiberglass offering high strength at a lower price point than Kevlar®.

Continuous Fibers:

Carbon Fiber: Highest strength-to-weight ratio, ideal for replacing machined aluminum parts.
Fiberglass: Good balance of strength and cost.
Kevlar®: Excellent durability, suitable for parts experiencing sudden loading.
HSHT Fiberglass: High heat tolerance and strength, best used in high temperature applications.

Key Properties (Tested Values):

Tensile Strength: Varies by material (e.g., Onyx: 40-52 MPa).
Flexural Strength: Varies by material (e.g., Carbon Fiber: 540 MPa, Nylon: 50 MPa).
Heat Deflection Temperature: Varies by material and reinforcement (e.g., Onyx FR: 138°C).
* Surface Resistance: Onyx ESD: 105-107 Ω (ESD rated).

CFR Reinforcement:

Markforged printers can reinforce parts with continuous fibers, offering superior strength and performance compared to traditional FFF.