The dividing line is 600 mm of nominal width. Products measuring less than 600 mm wide fall under heading 7226; those 600 mm or more wide fall under heading 7225. Width is measured at the widest point of the strip as presented for import.

High-speed steel is defined by its specific alloy composition — typically high tungsten, molybdenum, chromium, vanadium, and cobalt content — designed to retain hardness at elevated cutting temperatures. Strip meeting that composition goes under 722620 regardless of processing method, while other alloy steel strip is classified by processing (hot-rolled, cold-rolled, or other) under 722691, 722692, or 722699.