ASA Kevlar

Case study - zobacz do czego został wykorzystany ten filament:

High durability in production applications

Spectrum ASA Kevlar filament is a technical composite material based on a combination of ASA copolymer and aramid fibres. The aim of producing composite materials by combining different types materials is to impart new properties, previously unattainable for separate components. As a base for the composite, we used the ASA copolymer, well known for its high resistance to weather conditions, combining it with aramid, which is used to make some of the strongest synthetic fibres.

Aramid fibres, mainly known as Kevlar, are used to manufacture highly damage-resistant items such as bulletproof vests, helmets and speaker membranes. Aramid fibres do not fracture easily under stress (unlike glass and carbon fibres), instead they experience shear fracture and tearing – which gives them high resistance to damage.

Aramid itself is a not a particularly UV-resistant material, coating it and – in a way – protecting in the ASA polymer, highly resistant to this factor, guarantees a long life for the fibres and the entire composite. Unlike carbon and glass fibres, Kevlar fibres exhibit significantly less abrasion of the printer nozzle, which is not insignificant for the processing costs of printing. The use of fibre structures helps reduce material shrinkage when printing, making it possible to produce large-scale models.

With our new filament, Kevlar is now also finding its place in 3D printing technology. Components printed from Spectrum ASA Kevlar can be used in applications that require sunlight resistance and high impact strength (e.g.  bumpers, protection, etc.). The aramid fibre makes for a rougher outer surface of the prints, making them more matt and, therefore, more aesthetically pleasing than classic ASA.


Technical data

Available diameter:
1.75 [mm]
Diameter tolerance:
+/- 0.03 [mm]
1.07 g/cm3
Thermal resistance:
HDT B - 89°C, VICAT - 94°C
Surface finish:
matte, rough
Verify your spool:
YES (course of diameter online graph - on the entire length of the spool, mean diameter, ovality, standard deviation individually for each manufactured spool)

How to use

Nozzle temperature:
Bed temperature:
Recommended printing speed:
30-70 mm/s
Recommended shell thickness:
0.40 - 2.70mm
Recommended layer height:
≥ 0.15mm
Closed chamber for printing:
recommended for larger prints
Dry box recommended:
Ruby or hardened nozzle recommended:
not necessary (for increased adhesion or to prevent warping: Dimafix, 3DLac, Magigoo)

Material characteristics

  • Aramid fibers reinforced
  • HDT thermal resistance – 89°C
  • Vicat softening point – 94°C
  • good aging resistance
  • very strong impact resistance
  • relatively high chemical resistance
  • UV resistance
  • printable on desktop devices without a heated chamber
  • matt print surface
  • perfect bonding of the layers


  • functional prototype,
  • production tooling
  • manufacture of fixtures and assembly tools
  • manufacture of components exposed to impact
  • components that need high resistance to outdoor exposure

Case study

“Big Worm (2023)” is a kinetic sculpture and installation that blurs the lines between technology and nature, creating a mesmerizing dance of mechanics and organic movements.

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Where to buy

Check the list of our local and online distributors.

Verify Your Spool

Check the course of diameter on the entire length of the spool, ovality, mean diameter and standard deviation for each manufactured spool individually.

Where to buy

Check the list of our local and online distributors.

A wide range of products

Wide portfolio consisting of over 50 filaments with a versatile range of properties and applications, divided into three segments: desktop easy-to-use, industrial grade and high performance.

High quality

Innovation, extrusion know-how and highest quality filaments are the pillars of Spectrum philosophy. Our team is working continously on the development of new materials and their applications.

European made

All filaments from our portfolio are in-house made. We use modern production lines equipped with non-standard solutions to obtain highest quality final product.

Professional technical support

Our qualified support team helps at every stage from material selection to the 3D printing process.

Not sure what filament to choose?



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