AISI 4340 Chromium-Molybdenum Steel Slab
AISI 4340 alloy steel slabs for aerospace forgings and high-stress components, typically 200-400mm thick in rectangular form. Classified in 7224.90.00 as semi-finished other alloy steel, not meeting tool steel or high-strength definitions in U.S. notes, intended for hot rolling into plates.
Import Duty Rates by Country of Origin
More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If rolled into hot-rolled flat products under 600mm wide
Becomes hot-rolled non-alloy or low-alloy flat products once processed beyond semi-finished.
If further cold-worked after hot rolling
Cold-rolled alloy steel sheets/bars fall under heading 7225 for further worked products.
If in ingot form rather than semi-finished billet/slab
Pure ingots or primary forms without substantial reduction are separately classified in 7224.10.
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Import Tips & Compliance
• Declare exact dimensions and require heat analysis certificates; slabs must not be in coils or further worked (e.g
• no coatings)
• Watch for Section 232 tariffs on steel imports exceeding quotas
Related Products under HTS 7224.90.00
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