Maulana, Erizal, and Mohamad Nasrun. 2020. “Pengaruh Proses Hardening Dan Variasi Suhu Tempering Pada Kekerasan Dan Kuat Impact Baja SS 201”. Piston: Journal of Technical Engineering 3 (2):21-25. https://doi.org/10.32493/pjte.v3i2.7224.