AGUSTIAN, ERVAN, Somawardi, and Sugianto. “Analysis of the Effect of Cooling Media and the Combination of Cooling Holding Time on the Hardness Value of AISI-1045 Steel in the Quenching Process”. Manutech : Jurnal Teknologi Manufaktur 13, no. 01 (June 18, 2021): 25-32. Accessed January 9, 2025. https://ejournal.polman-babel.ac.id/index.php/manutech/article/view/169.