Composite Materials

Reliable materials for every stage in the production cycle.

1. Explore composites

1.1 Onyx

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Nylon mixed with chopped carbon fiber offers a high-strength thermoplastic with excellent heat resistance, surface finish, and chemical resistance.

Onyx serves as a thermoplastic matrix for Markforged’s composite parts. It can be printed alone or reinforced with one of our continuous fibers to give strength comparable to aluminum. Use Onyx for anything from tooling and fixtures to end-use parts. Onyx has an HDT of 145° C (293° F)

Already 40% stiffer than ABS, Onyx provides the foundation for Markforged’s 3D printed composites. It can be printed on its own or reinforced with any of our four continuous fibers.

1.2 Onyx FR

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1.3 Nylon White

2. Continuous Fibers

2.1.  Carbon fiber

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Markforged’s stiffest, strongest fiber with the highest strength-to-weight ratio. Carbon fiber is a thin filament made up of carbon atoms organized into a crystalline structure. Because of its very high stiffness and strength, it is widely used in the aerospace and automotive industries. In three-point bending, our 3D printed carbon fiber is 8x stronger than ABS and 20% stronger than the yield strength of aluminum.

Carbon fiber is strong enough to replace aluminum at half the weight; use it when you want superior stiffness and minimal deflection. Carbon fiber has a flexural strength of 470 MPa (68 ksi) which is 20% higher than the yield strength of 6061 aluminum. Its tensile strength is 700 MPa (102 ksi), more than twice the ultimate tensile strength of aluminum.

2.2. Fiberglass

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Extremely thin strands of glass bundled together into a fiber. Fiberglass is traditionally used in composites for boat, automobile, and aircraft manufacture. Inexpensive and 11 times stiffer than ABS, fiberglass is the perfect entry-level fiber.

3D printed fiberglass is 11x more rigid than ABS and 26x more rigid than nylon. Use fiberglass to print parts that are an order of magnitude stiffer than typical 3D printed objects at the most affordable price.

2.3. HSHT Fiberglass

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HSHT delivers the highest impact resistance and heat deflection temperature of our continuous fibers. HSHT fiberglass has a flexural strength of 420 MPa (71 ksi) and a tensile strength of 600 MPa (87 ksi).

With superior heat resistance and a flexural strength that is second only to carbon fiber, HSHT fiberglass is ideal for applications requiring high heat and impact resistance or high elasticity.

2.4. Kevlar

Kevlar is a synthetic fiber developed and produced by DuPont. Know for its light weight and toughness, it is traditionally used in products such as tires, sails, rope, and protective equipment. Kevlar is tough, lightweight, and can bend further than any other fiber.

Kevlar is 8x more impact resistant than ABS while remaining 15–20% lighter than our other reinforcement fibers.

Kevlar is best utilized in parts that will take a beating. Its low density and high durability make it a great option for applications involving a lot of motion or interfacing with production parts.

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