Herizen, Dwi; Siswanto, Rudi
(ROTARY Jurnal Teknik Mesin Universitas Lambung Mangkurat, 2020-09)
SUS 630 Steel hardness is 30.9 HRC and Chromium content is 12%, based on its
use at PT. Pupuk Kalimantan Timur recommended a hardness of 55 HRC, to
increase material hardness can be done by means of material engineering, ...