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. 2021 Nov 29;14(23):7300. doi: 10.3390/ma14237300

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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The results of tests of tensile strength $σ_{u t s}$ and proof stress $σ_{y s}$ .