2704.00.00.11 - Coke larger than 100 mm (4 inches) in maximum diameter and at least 50 percent of which is retained on a 100-mm (4-inch) sieve after drop shatter testing pursuant to ASTM D 3038, of a kind used in foundries

This HTS subcategory, 2704.00.00.11, specifically classifies **foundry-grade coke** characterized by its substantial size and robust physical properties. The defining criteria include a minimum maximum diameter of 100 mm (4 inches) and a strong resilience demonstrated by retaining at least 50 percent of the material on a 100-mm sieve after undergoing the ASTM D 3038 drop shatter test. These specifications are crucial for its intended use in foundries, where larger, more durable coke is required to withstand the demanding conditions of metal smelting.

This classification is distinct from its sibling category, 2704.00.00.25, which covers "Other" coke and semicoke of coal, lignite, or peat. While the sibling category serves as a residual classification for all other types of coke not meeting the stringent physical and functional requirements of 2704.00.00.11, this specific subcategory targets the specialized high-quality foundry coke. The key differentiator lies in the prescribed size, shatter resistance, and the explicit statement of intended use in foundries.

As this is a leaf node within the HTS, there are no further subcategories. Therefore, classification within 2704.00.00.11 relies entirely on meeting the precise physical and application criteria outlined in the description. Importers and exporters must ensure that their product's dimensions, performance in the specified drop shatter test, and its intended application in foundry operations are thoroughly documented to justify this classification.