Research Article
The Effect of Quenching and Tempering on the Hardness of Medium Carbon Steel: AISI 1045
@INPROCEEDINGS{10.4108/eai.16-9-2025.2361140, author={Banu Nursanni and Iis Siti Jahro and Hidir Efendi and Sapitri Januariyansah and Muhammad Agus Salim and Daffa Arianda}, title={The Effect of Quenching and Tempering on the Hardness of Medium Carbon Steel: AISI 1045}, proceedings={Proceedings of the 7th International Conference on Innovation in Education, Science, and Culture, ICIESC 2025, 16 September 2025, Medan, Indonesia}, publisher={EAI}, proceedings_a={ICIESC}, year={2026}, month={3}, keywords={heat treatment quenching tempering aisi 1045 hardness}, doi={10.4108/eai.16-9-2025.2361140} }- Banu Nursanni
Iis Siti Jahro
Hidir Efendi
Sapitri Januariyansah
Muhammad Agus Salim
Daffa Arianda
Year: 2026
The Effect of Quenching and Tempering on the Hardness of Medium Carbon Steel: AISI 1045
ICIESC
EAI
DOI: 10.4108/eai.16-9-2025.2361140
Abstract
Technological advancements have facilitated enhanced steel production through improved raw material sources. AISI 1045 is a widely utilized metal in the production of machine tools. This steel necessitates adjustments to its hardness and ductility. Consequently, heat treatment is necessary to develop various characteristics, ranging from soft to hard, based on the intended application. This study investigated the effects of quenching medium and tempering on hardness and microstructure during the quenching and tempering processes. This research assessed various quenching agents, including water, oil, and air, before tempering at 600 °C for 30 minutes. An experimental study technique was employed, incorporating descriptive statistical data analysis methods derived from Vickers hardness tests. The maximum hardness value of 421.0 VHN was achieved by heating to an austenization temperature of 850 °C, followed by water quenching as the cooling medium. After tempering, the maximum hardness recorded was still attained through water quenching, reaching 312.5 HVN.
