Effect of Heat Treatment and Tempering Process on the Hardness of S55c Steel as A Cutting Blade Material for Plastic Shredding Machines. In. Sci. Ed. J [Internet]. 2026 Jan. 11 [cited 2026 May 22];7(1):127-36. Available from: https://cahaya-ic.com/index.php/ISEJ/article/view/2461