Segmentation by types of neutron absorbers classifies the market into five material families, each with a specific performance profile and cost structure. Boron‑based absorbers, primarily boron carbide, dominate due to high neutron capture cross‑section and relatively low price, supporting roughly 40 % of installations across all applications. Cadmium‑based compounds, valued for their effectiveness in thermal neutron environments, account for about 20 % of the market, though environmental regulations constrain their expansion. Gadolinium‑based materials, offering superior capture in the epithermal range, serve niche high‑precision research reactors and contribute approximately 15 % of sales. Hafnium‑based absorbers, prized for high melting points and corrosion resistance, are employed in advanced reactor designs and represent 10 % of the market. The remaining 15 % consists of composite systems that blend multiple absorbers to tailor spectral response, increasingly adopted in defense and medical contexts where multi‑functional performance is required. These type‑specific shares illustrate how material properties, regulatory pressures, and cost considerations drive the overall market composition.