Slamet, Sugeng, Suyitno ., and Indraswari Kusumaningtyas. 2019. “Effect of Composition and Pouring Temperature of Cu(20-24)wt.%Sn by Sand Casting on Fluidity and Mechanical Properties”. Journal of Mechanical Engineering and Sciences 13 (4), 6022-35. https://doi.org/10.15282/jmes.13.4.2019.20.0476.