This study presents a comprehensive life cycle assessment of a three-piece metal tinplate aerosol can to evaluate its carbon footprint in a “cradle-to-gate” perspective. The life cycle inventory integrates primary data from real industrial practices for the foreground processes, supplemented by secondary data from the ecoinvent v3.9 database and literature for the background processes. The analysis identifies the primary inventory items contributing most to the carbon footprint. The results highlight that tinplate is the largest contributor, accounting for approximately 60% of the carbon footprint, followed by wooden pallets (24%) and aluminum foil used in offset printing (10%). The energy consumption associated with cutting and shaping the parts and assembling the aerosol cans has a negligible impact on the overall carbon footprint. Specifically, natural gas accounts for approximately 1% of the total emissions, while electricity contributes around 2%. These figures are relatively small compared to the overall carbon footprint of the cans, which is primarily influenced by the production of the tinplate sheet itself.