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Researchers Uncover How to 3D-Print One of the Strongest Stainless Steels

High-energy X-rays light a path forward

NIST
Mon, 10/10/2022 - 12:01
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(NIST: Gaithersburg, MD) -- For airliners, cargo ships, nuclear power plants, and other critical technologies, strength and durability are essential. This is why many contain a remarkably strong and corrosion-resistant alloy called 17-4 precipitation hardening (PH) stainless steel. Now, for the first time ever, 17-4 PH steel can be consistently 3D-printed while retaining its favorable characteristics. 

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A team of researchers from the National Institute of Standards and Technology (NIST), the University of Wisconsin-Madison, and Argonne National Laboratory has identified particular 17-4 steel compositions that, when printed, match the properties of the conventionally manufactured version. The researchers’ strategy, described in the journal Additive Manufacturing, is based on high-speed data about the printing process they obtained using high-energy X-rays from a particle accelerator. 

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