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EOS Adds Nickel Alloy, Ideal for Industrial AM Applications

February 23, 2021

EOS has expanded its additive manufacturing (AM) materials portfolio with the introduction of EOS NickelAlloy IN939, a new, high-temperature, crack-free material that provides industrial 3D-printing options for turbines and other energy-industry applications, according to EOS officials, who note that it was developed to meet or exceed the properties of casted nickel alloy.

The new powder material, EOS NickelAlloy IN939, a nickel-chromium alloy, reportedly provides an excellent balance of strength in high-temperature settings, resistance to corrosion and oxidation, fatigue performance and creep strength at temperatures to 850 C. It offers greater tensile properties, validation, reliability and crack-resistance than similar materials, according to company officials. Parts produced using the alloy also can be hardened after being manufactured by applying precipitation-hardening heat treatments.

For processing on the EOS M 290 metal-AM platform with a planned release for the EOS M 400-4 platform in 2021’s second quarter, these qualities are said to position the alloy for use in creating industrial gas turbines (vanes, blades, heatshields) as well as microturbines, turbochargers, power-industry parts and other energy-industry applications exposed to high temperatures and extreme elements.

“We’re excited to see the continued investments by EOS supporting 3D printing applications in the energy industry,” says Dr. Alex Hoffs, president of Power Systems Mfg., LLC. “For gas-turbine power-plant operators, we believe that flow path components additively manufactured with new, advanced metal-powder alloys such as EOS NickelAlloy IN939 bring the potential for significant operational-flexibility improvements.”

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See also: EOS of North America, Inc.