Segmentation by types of compacted alloying additives differentiates the market according to chemical composition and processing route, each influencing overall market size through pricing, performance, and substitution dynamics. Iron‑based additives, the most prevalent class, dominate due to their compatibility with standard steelmaking practices and cost effectiveness, typically representing the largest revenue portion. Nickel‑based additives, valued for superior high‑temperature strength, occupy a secondary tier, attracting premium pricing in aerospace and energy applications. Aluminum‑based additives, favored for lightweight solutions, capture a modest but growing share as automotive manufacturers pursue weight reduction. Rare‑earth‑based additives, though limited in volume, command high margins because of their unique grain‑refinement capabilities in specialized alloys. Finally, hybrid formulations that combine two or more elemental bases are emerging, driven by the need for tailored property profiles, and they incrementally expand the market’s total addressable value.