• Building process of an EOS M 290, DMLS, 3D printing, metal, laser | © EOS
    EOS 3D Printing Metal Materials

    MS1 and CX
    Tool Steel for
    Additive Manufacturing

Tool Steel for 3D Printing

Tool steel’s material characteristics make it ideal for a wide range of tooling applications across all industries.

The tool steel family of powders encompasses the MS1 and CX alloys. All these powders are designed and tested for use on EOS’ metal systems.

All EOS tool steel powders are shipped with an inspection certificate (according to EN 10204, Type 3.1) showing the results of the extensive QA testing not only of the powder itself but also of test parts built on a dedicated system with a dedicated process.

EOS also offers a wide range of validated processes for each of the above materials. These offer the optimal combination of parameters (e.g. laser power, layer thickness, etc.) in order to ensure that the properties of the 3D printed part are consistently achieved.

EOS MaragingSteel MS1

Parts show very good mechanical properties being easily heat treatable using a simple thermal age-hardening process to obtain excellent hardness and strength.

Typical Part Properties

Chemical composition in compliance with

18Ni300, M300

Ultimate Tensile Strength  2080 MPa
Yield Strength  2000 MPa
Elongation @ Break 4 %


EOS StainlessSteel CX

Parts show good corrosion resistance combined with high strength and hardness plus excellent wear and fatigue resistance. This combination is ideal for tooling applications in medical, food and other industries.

Typical Part Properties

Chemical composition in compliance with

Precipitation hardening tool steel

Ultimate Tensile Strength  1720 MPa
Yield Strength  1650 MPa
Elongation @ Break 6 %


You are looking for metal materials for 3D printing? Contact us!

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