High-speed steel (HSS) — alloyed with tungsten, molybdenum, cobalt, or vanadium to retain hardness at elevated cutting temperatures — is a specialty input for cutting tool, drill bit, and saw blade manufacturing. The hot-rolled irregular coil form in this classification is an intermediate product destined for further processing into finished tooling. HSS commands a significant price premium over standard alloy steel, and import volumes are relatively modest compared to commodity bar categories, making supplier qualification and heat traceability especially important. Section 232 steel tariffs apply, though HSS is sometimes considered for exclusion requests given its specialized, non-commodity nature.

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