Analysis of the Effect of Cooling Variations on the Hardness Value and Microstructure of ST 42 Steel from SMAW Welding Results . Nusantara of Engineering (NOE), [S. l.], v. 8, n. 01, p. 250–257, 2025. DOI: 10.29407/noe.v8i01.23190. Disponível em: https://ojs.unpkediri.ac.id/index.php/noe/article/view/23190. Acesso em: 22 may. 2025.