Wibisono, A. T., Ramadhani, M. ., & Rochiem, R. . (2025). Effect of Holding Time and Cooling Medium on Microstructure and Hardness of AISI 8655 in Hardening Process. IPTEK The Journal of Engineering, 4(3), 13–16. https://doi.org/10.12962/joe.v4i3.4280