Evaluation of Effect Heat Treatment on Mechanical Properties of Low Carbon Steel with Different Cooling

Authors

  • Khaled Saleh Mohammed Alwaer Higher Institute for Science and Technology – Al Garaboulli Author
  • Ebraheem Ahmed Altome Higher Institute for Science and Technology – Al Garaboulli Author
  • Omer Kalaf Higher Institute for Science and Technology – Al Garaboulli Author

Keywords:

Low Carbon Steel, Heat Treatment, Cooling, Water, Air, Oil, Hardness, Ductility

Abstract

In this study, Low carbon steel C 17 were selected to investigate the effect of different cooling during the heat treatment on mechanical properties. The samples were heated in a heat treatment furnace at approximately 980°C for almost 1 hour and then cooled by different quenching media (water, air, oil). The results show that Oil quenching also had a slight effect on the metal tensile strength and hardness. The change in the ultimate stress was observed. Upon water quenching, the result was 745 N/mm², while the ultimate stress of the sample before heat treatment was 431 N/mm². Meanwhile, hardness after water quenching. The hardness before treatment was 126 HB, and after treatment and water quenching, it was 263 HB. The impact test did not fracture despite the increased hardness because the metal still retained a high degree of ductility.

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Published

2025-11-30

Issue

Vol. 13 No. 2 (2025): Volume (13), Issue (2), December 2025

Section

المقالات

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How to Cite

Evaluation of Effect Heat Treatment on Mechanical Properties of Low Carbon Steel with Different Cooling. (2025). Libya Journal of Applied Sciences and Technology, 13(2). https://www.ljast.ly/journalv2/index.php/journalv2/article/view/27