Nickel based superalloy Inconel 939 components for demanding applications from Delva


EOS Finland Oy and Delva Oy work together to boost AM part production using the nickel-based superalloy IN939 in Finland.

EOS recently introduced a new nickel-based alloy, EOS NickelAlloy IN939, for additive manufacturing. Thanks to its excellent oxidation resistance and outstanding mechanical properties at elevated temperatures, IN939 opens up new possibilities for additive manufacturing in demanding applications. Potential applications for this material include stationary gas turbine industries and applications like guide vanes, heat shields, among others. Previously existing materials designed for additive manufacturing have not been suitable for such applications.

EOS NickelAlloy IN718, EOS NickelAlloy IN625, and EOS NickelAlloy HX are already suitable for a wide variety of applications. However, EOS NickelAlloy IN939 offers improved temperature capabilities and excellent mechanical properties up to 850 °C, which is 200 °C more than with IN718. Developing a hard-to-weld material was a very challenging project. EOS is very proud to introduce IN939 as a crack-free, strain-age resistant product, as well as an optimized heat-treatment that drastically reduces post-treatment costs and effort without requiring HIP (Hot Isostatic Pressing).

From powder to ready components

Delva offers metal printing for demanding applications and is delighted about EOS’ newest material. Delva has worked with EOS in the areas of engineering, heat treatment, machining, and welding during the development of IN939. With this first-hand experience, Delva is ready to produce parts at the printing facilities in Hämeenlinna.

Jarmo Kastell, CEO at Delva Oy, says that the target is to ensure high-quality components with outstanding properties and ease experimentation and utilisation of this material in the industry, potentially benefiting significantly from this new material. “Machine and equipment manufacturing industry has a lot to gain with this material in the global competition. And we are more than happy to be part of this development,” says Jarmo Kastell.

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