AISI 4340 Alloy Steel Flat Bar from United States
AISI 4340 nickel-chromium-molybdenum alloy steel flat bar, hot-rolled for structural components and aircraft parts. This non-cold-formed bar of other alloy steel is classified under this tariff item, suitable for high-strength applications.
Duty Rate — United States → Canada
50%
Rate breakdown
26SUR5050%United States Surtax Order (2026) — 50% on US products
Import Tips
• Verify the flat bar's dimensions meet the definition of bars and rods, not plates or sheets
• Provide a mill test certificate confirming nickel, chromium, and molybdenum content
• Ensure the product is not cold-formed