Saragih, Albert Daniel, Silviana Simbolon, and Sutiana Sutiana. “Studi Perlakuan Panas Terhadap Sifat Kekerasan Pada Baja ST 60”. Piston: Journal of Technical Engineering 7, no. 1 (August 17, 2023): 12–19. Accessed July 31, 2024. https://openjournal.unpam.ac.id/index.php/Piston/article/view/28872.