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SITCSection 5
U.S. exports of hydrides, nitrides, azides, silicides, and borides (SITC 52495) totaled $22.5M in July 2026.
Importers of Hydrides, Nitrides, Azides, Silicides, and Borides paid $719K in duties in July 2026 — an effective duty rate of 23% on $3.2M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataClassified separately from carbides, this group of inorganic binary compounds—hydrides, nitrides, azides, silicides, and borides—serves as critical precursor and functional materials across semiconductor fabrication, advanced ceramics, and specialty metallurgy. Silicon nitride and borides, for instance, are prized for extreme hardness and thermal stability in cutting tools and refractory applications, while metal hydrides are key to hydrogen storage research. Classification hinges on whether the compound is also a carbide falling under adjacent headings, making precise chemical identification essential at entry. Importers should confirm the exact compound identity and CAS number to avoid misclassification disputes.
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107 shipments/mo
Basic heading 343 of 465 in section 5
Basic heading 52495 · $3.2M of $28.9B
The key boundary is whether the compound also qualifies as a carbide under the adjacent carbide headings. If a compound contains carbon in a carbide-forming role, it falls under those specific carbide provisions; pure hydrides, nitrides, azides, silicides, and borides that do not meet that carbide definition are classified here. Importers should supply a precise chemical specification and CAS number to support the correct classification.
Advanced ceramics manufacturers, semiconductor equipment producers, and hard-coating applicators are the primary buyers. Silicon nitride is used in cutting inserts and bearing components; titanium diboride appears in armor and crucible linings; and metal hydrides are increasingly relevant to hydrogen energy storage systems. Demand patterns therefore track capital investment cycles in electronics and industrial tooling.
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Exports · July 2026
destination
Taiwan and Korea, South together take 56% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$3.2MYoY · Pro
Exports
$22.5MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.