Tech Update


EOS Adds Materials to Metal Portfolio

Monday, June 29, 2020

EOS has expanded its metal material portfolio, adding one new Premium and seven Core products for its M 290, M 300-4 and M 400-4 additive manufacturing systems.

“EOS introduced Technology Readiness Levels (TRLs) in 2019 for materials and processes to classify technological maturity levels for easy customer orientation,” says, Hanna Pirkkalainen, EOS product manager of metal materials, differentiating between the Core and Premium products. “Depending on specific application requirements, customers can choose between Core materials (TRL 3 and 5) with a major focus on early market access to new materials, and Premium materials (TRL 7-9), which attach particular importance to repeatable part quality so essential in serial production.”

The new Premium material, EOS ToolSteel 1.2709, validated for M 290 systems, is a TRL 7, ultra-high strength and hardness maraging steel for demanding molding applications. The tool steel reportedly offers excellent fatigue strength and improved polishability. Properties are adjustable with different heat treatments after 3D printing. Typical applications include plastic injection molds, extrusion tools, hot pressing tools and diecasting tools for aluminum and zinc alloys.

The three new Core products for AlSi10Mg, and Ti64 grades 5 and 23 reportedly offer build rates to 50-percent faster, thus increasing considerably the productivity of M 290 machines. Developed for the EOS M 290 system, the new 60-µm Core process for EOS Aluminum AlSi10Mg is classified as TRL 3. The material reportedly offers high productivity and improved buildability, and enables heat treatment to improve ductility. 

Two new Core materials, EOS NickelAlloy IN718 and EOS MaragingSteel MS1, now are available for the EOS M 300-4. The IN718 product, a precipitation-hardening nickel-chromium alloy, is characterized by good tensile, fatigue, creep and rupture strength at temperatures to 700 C, with the 40-µm process carrying a TRL 3 classification. Typical applications range from gas-turbine components to instrumentation, power-industry and process-industry parts. The 50-µm process based on EOS MaragingSteel MS1 carries a TRL 3 classification. Parts built with this material offer very good mechanical properties, according to EOS officials. The parts reportedly can be post-hardened easily to more than 50 HRC to obtain excellent hardness and strength. Typical applications range from injection molding tools and inserts to mechanical-engineering parts. 

And, the materials portfolio of the EOS M 400-4 has been extended to include two new and reportedly faster Core processes for EOS titanium Ti64 Grade 5 and EOS titanium Ti64 Grade 23. The new 80-µm Core processes for these materials on both the M 290 and M 400-4 systems enable higher build rates. Both Ti6AI4V alloys reportedly offer excellent mechanical properties, including high density with high strength, and excellent corrosion resistance. The processes are optimized for faster production of parts with properties similar to wrought Ti64. Typical applications range from aerospace and automotive components to other industrial applications requiring a combination of low weight with high strength.


See also: EOS of North America, Inc.

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