Ariyanto, A., Ahmad Risa Harfit, Ahcmad Fauzan, Tati Noviati, & Bagus Rianto. (2025). Testing Process of Density and Porosity of Aluminium 7075 and Aluminium 6061. International Journal Science and Technology, 4(2), 41–55. https://doi.org/10.56127/ijst.v4i2.1993