E4340 Aircraft Grade Alloy Steel Foil
Electroslag remelted E4340 alloy steel foil, cold-rolled ≤0.25 mm thick, <300 mm wide, not further worked than cold-reduced. Precisely classified HTS 7226.92.70 for narrow aerospace alloy steel strip. Critical for landing gear and engine components.
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Alternative Classifications
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If stainless alloy steel
Stainless compositions (>10.5% chromium) classified in 7226.1x subheadings
If meets tool steel composition Note 72(e)
Specific tool steel alloys have dedicated tariff provisions
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Import Tips & Compliance
• Provide ESR melt certification; comply with aerospace material traceability requirements; document exact cold-reduction process to avoid hot-rolled confusion
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