7404.00.30.45 - Containing more than 0.3 percent of lead

This HTS category, 7404.00.30.45, specifically addresses waste and scrap of copper-zinc base alloys (brass) that contain a significant amount of lead, defined as more than 0.3 percent by weight. This classification focuses on the compositional characteristic of lead content as the primary defining factor for these brass scraps. These materials are typically generated as byproducts of manufacturing processes involving brass and are intended for recycling.

This specific classification distinguishes itself from its sibling, 7404.00.30.55, which covers "Other" brass waste and scrap. The crucial differentiator is the presence of lead exceeding the 0.3 percent threshold. Therefore, any brass waste or scrap that falls under 7404.00.30.30 and meets this lead content requirement will be classified here, while brass scrap with lower lead content or other compositions would fall under the "Other" category.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification under 7404.00.30.45 is conclusive once the material is identified as brass waste and scrap with a copper content of less than 94 percent by weight, and the lead content is confirmed to be above the 0.3 percent threshold. This specificity ensures accurate tariff assessment based on the exact composition of the recycled brass material.