Manufacturing Technology 2025, 25(6):771-777 | DOI: 10.21062/mft.2025.082

Sinterhardening Process of Lean Cr-Mo Prealloyed Steel for Moderately Loaded Applications

Dmitriy Koblik1, Miroslava Ťavodová ORCID...2, Monika Vargová ORCID...2, Richard Hnilica ORCID...2, Nataša Náprstková ORCID...3
1 GEVORKYAN, a.s. Továrenská 504, 976 31 Vlkanová, Slovakia
2 Faculty of Technology, Technical University in Zvolen. Študentská ulica 26, 960 01 Zvolen, Slovakia
3 Faculty of Mechanical Engineering, J. E. Purkyne University in Usti nad Labem. Pasteurova 3334/7, 400 01 Usti nad Labem. Czech Republic

The article deals with sinterhardening process of lean Cr-Mo prealloyed steel for moderately loaded applications. New material Astaloy CrS with low alloying volume of chromium and molybdenum was analyzed as possible basis for sinterhardening process. Standard mechanical properties of frequently used and more expensive materials such as DistaloyDH and Astaloy CrM are chosen as a compara-tive criterion. Astaloy CrS+0.85%C samples with different compaction densities and Ni content were studied, mechanical properties and hardness after sinterhardening process were compared. The influ-ence of additional high-temperature sintering on mechanical properties was assessed. The micro-structure of the sinterhardening (SH) and high-temperature sintering + sinterhardening (HTS+SH) samples was studied quantitative analysis of the phase was given. As result, tensile strength greater than 900 MPa and hardness greater than 33 HRC can be obtained for investigated material.

Keywords: Sintering, High-temperature sintering, Astaloy CrS, Density, Microstructure
Grants and funding:

This work was supported by Scientific Grant Agency of the Ministry of Education, science, research and sport of the Slovak Republic and the Slovak Academy of Sciences under the grant number VEGA 1/0073/24 „Experimental analysis of shapes and materials of working tools of additional equipment of forestry mechanization technology “

Received: June 20, 2025; Revised: December 15, 2025; Accepted: December 15, 2025; Prepublished online: December 22, 2025; Published: December 23, 2025  Show citation

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Koblik D, Ťavodová M, Vargová M, Hnilica R, Náprstková N. Sinterhardening Process of Lean Cr-Mo Prealloyed Steel for Moderately Loaded Applications. Manufacturing Technology. 2025;25(6):771-777. doi: 10.21062/mft.2025.082.
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