# POSTECH designs 3D-printing alloy with yield strength above 1 GPa from −196 °C to 600 °C

- Published: 2026-11-05 08:46 UTC
- Section: Machines & Making › Materials science
- Tags: 3D-printing alloy, POSTECH, Kim Hyoung Seop, yield strength 1 GPa, uniform elongation, −196 °C, 600 °C, precipitate network, additive manufacturing, laser powder melting
- URL: https://realtech.media/news/rt-91cd381cbd7d01a36f370875_postech_designs_3d/

**A Korean team printed laboratory samples of an alloy that holds strength and ductility from −196 to 600 °C without post-heat treatment. Further verification is planned.**

![POSTECH designs 3D-printing alloy with yield strength above 1 GPa from −196 °C to 600 °C](https://sgzwpqqelzmajkcubgkl.supabase.co/storage/v1/object/public/rt-media/2026/11/4e6caf67c421ff00.jpg)
*René Volfík, Wikimedia Commons, CC BY-SA 4.0*

The Korea National Research Foundation said on 5 November that a POSTECH team led by Professor Kim Hyoung Seop designed a 3D-printing alloy that keeps high strength and ductility from −196 °C to 600 °C without post-heat treatment, yna.co.kr reports [1]. Precipitates form a network during rapid melting and solidification.

Samples were built by laser melting of metal powder layer by layer. In tensile tests at −196 °C, 25 °C and 600 °C, yield strength was at least 1 GPa and uniform elongation was 19–26%, the team said [1].

Electron microscopy showed that interfaces between precipitates and the matrix acted differently: some hindered deformation and raised strength, others passed deformation to the precipitates so both deformed together [1]. Kim said the team will verify the alloy further for cryogenic storage, aerospace parts and additive manufacturing.

## Sources

1. [yna.co.kr](https://www.yna.co.kr/view/AKR20261105087600063)

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Source: RealTech, realtech.media — https://realtech.media/news/rt-91cd381cbd7d01a36f370875_postech_designs_3d/