Effect of Post Heat-treatment on Hardness and Case Depth of 17NiCrMo6-4 Gear Steel after Liquid Carburizing. JPIChE [Internet]. 2014 Nov. 11 [cited 2026 Aug. 12];42(2):85-90. Available from: https://www.piche.org.pk/journal/index.php/jpiche/article/view/176