This article presents a study of the metal sintering process using the two-way analysis of variance (ANOVA) method. Sintering technology, turning metal powder into products through shaping with molds and then sintering into shapes, is a technology that creates products differently than traditional machining methods. It offers advantages like the ability to create complex shapes with minimal waste, control metal density, and produce porous metal, making it increasingly popular. This study analyzed the two most important process parameters of the sintering process, including pressing density (A) and sintering mode (B). ANOVA results showed that both parameters were highly important and had no correlation between them. After that, the post-hoc tests (Bonferroni correction) also demonstrated that the hardnesses in pressing density A4 (44.967 ± 3.319, p < 0.0083) were significantly higher compared with those in the three others. The post-hoc tests also revealed that the hardnesses in sintering mode B2 (44.025 ± 4.045) were significantly higher compared with those in B1 (39.150 ± 2.998, p < 0.0167) and B3 (39.967 ± 3.381, p < 0.0167). The process is straightforward to implement and can be verified using Excel, making it highly suitable for sustainable industrial production environments.