Metal 3D Printers - Materials & Binders

ExOne metal 3D printers transform more than 20 powders into metal, ceramic and composite parts and products. 

Our metal printing technology creates dense and functional precision parts used for automotive, aerospace, defense, energy, and consumer applications.

To ensure customers will have reliable, repeatable and predictable parts, from 3D printing to final sintering, we have a comprehensive qualification process. ExOne’s R&D teams work continuously to qualify new materials for use in our machines. What’s more, we routinely partner with companies to develop specific materials for binder jet 3D printing with our technology.

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ExOne has three qualification levels that recognize different degrees of readiness for customers with different application needs. To understand which machines print which specific materials listed below, please contact an ExOne representative, as there may be some restrictions based on particle size for certain machines.

Download the ExOne
Q1 2021 Materials Update


1. Third-Party Qualified Materials

These materials have passed ExOne’s rigorous testing for uniformity, dimensional tolerance, sintering characteristics, and other features over multiple builds. Please see the attached data sheets for third-party testing results based on MPIF standards.

2. Customer-Qualified Materials

The materials below have been qualified for use by ExOne customers, using standards for their own applications, and are being successfully printed today. Additionally, a number of ExOne customers also print proprietary powdered materials on our machines that are not listed below. If you have a question about 3D printing the materials below, please contact us.

Single Alloy Metals

  1. 17-4PH SS*
  2. 304L SS*
  3. 316L SS*
  4. Aluminum 6061
  5. Cobalt Chrome
  6. Copper
  7. H13 Tool Steel
  8. Inconel 625
  9. Titanium
  10. Tungsten Heavy Alloy


  1. Alumina
  2. Carbon
  3. Natural Sands
  4. Synthetic Sands
  5. Silicon Carbide
  6. Tungsten Carbide Cobalt

Ceramic-Metal Composites

  1. Boron Carbide i/w Aluminum
  2. Silicon Carbide i/w Silicon

*This material is also a third-party qualified material

3. Research & Development Materials

These materials have been deemed printable by ExOne and our customers after preliminary analysis. Our R&D work for these materials is ongoing and involves engineering work with the materials, as well as our printers and processes, to ensure successful printing. If you are interested in collaborating on development of these or any unlisted materials, please contact us.

See All R&D Materials

Single Alloy Metals

  1. 17-4PH SS**
  2. 304L SS**
  3. 316L SS**
  4. 4140
  5. 420
  6. 4340
  7. 4605
  8. Aluminum 6061**
  9. Bronze
  10. Cobalt Chrome**
  11. Copper**
  12. H11 Tool Steel
  13. H13 Tool Steel**
  14. Hastelloy
  15. Haynes 230
  16. Inconel 625**
  17. Inconel 718**
  18. Iron-Chrome-Aluminum
  19. M2 Tool Steel**
  20. Panacea
  21. Titanium**
  22. Tungsten (bonded or green)
  23. Tungsten Heavy Alloy**
  24. TZM Molybdenum


  1. Alumina**
  2. Aluminum Nitride
  3. Barium Titanate
  4. Boron Carbide
  5. Carbon**
  6. Glass
  7. Lead Zirconate Titanate (PZT)
  8. Natural Sands**
  9. Silicon Carbide**
  10. Silicon Nitride
  11. Synthetic Sands**
  12. Tungsten Carbide
  13. Tungsten Carbide-Cobalt**
  14. Zirconia
  15. Zirconium Carbide

Ceramic-Metal Composites

  1. Boron Carbide i/w Aluminum**
  2. Silicon Carbide i/w Silicon**

Metal Composites

  1. X1 Metal 316i™**
  2. X1 Metal 420i™**
  3. Iron i/w Bronze
  4. Tungsten i/w Bronze**
  5. Tungsten i/w Copper
  6. Tungsten i/w Invar

**This material has also been qualified by customers or received our rigorous third-party qualification status.

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ExOne Fuse™ Binders

One of the reasons ExOne metal binder jet systems can print such a diversity of powdered materials is our portfolio of specialty Fuse™ binders, which deliver unique benefits for the material being 3D printed.

Binders must deliver certain characteristics that work harmoniously with the powder material being printed. Considerations include viscosity, saturation, bleeding in X and Y, as well as debinding characteristics. ExOne binders continue to be optimized to provide improved green strengths and other beneficial properties based on the material being printed.

Explore Binders

  • CleanFuse™ — A premium, clean-burning binder that leaves behind no carbon residue and works well with metallic materials negatively affected by carbon, such as Inconel powders
  • FluidFuse™ — A versatile solvent-based binder with low viscosity that works well with a variety of metallic and non-metallic materials, including ceramics
  • AquaFuse™ — A water-based binder that works well with a variety of metallic material
  • PhenolFuse™ — A phenolic binder best suited for printing high-temperature materials, including non-metallics such as carbon, tungsten carbide (WC), silicon carbide (SiC), and other ceramics
  • NanoFuse™ — A new line of groundbreaking binders featuring suspended nanoparticles to improve the quality of binder jetting results with certain materials, such as copper and aluminum.
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