7225.50.70.00 - Heat-resisting steel

This HTS category, 7225.50.70.00, specifically covers flat-rolled products of other alloy steel, with a width of 600 mm or more, that have undergone cold-rolling (cold-reduction). The "heat-resisting steel" designation indicates that these materials are engineered to withstand high temperatures without significant loss of mechanical properties or degradation. These characteristics make them suitable for applications in demanding environments such as aerospace, automotive exhaust systems, and industrial furnaces.

The key differentiator for this subcategory lies in its inclusion of "heat-resisting steel." While its sibling category, 7225.50.80, also covers other cold-rolled flat-rolled products of other alloy steel with a width of 600 mm or more and a thickness of less than 4.75 mm, it does not specifically isolate those with heat-resisting properties. Therefore, the classification here hinges on the material's inherent ability to perform under elevated temperatures, distinguishing it from other alloy steels that may not possess this specialized characteristic.

As a leaf node, this category has no further subdivisions. Classification at this level is determined by the combination of being a flat-rolled product, made of other alloy steel, with a width of 600 mm or more, cold-rolled, of a thickness less than 4.75 mm, and crucially, being specifically heat-resisting steel. Importers and exporters should ensure that the material's technical specifications clearly demonstrate its heat-resistant properties to accurately assign this tariff code.