AISI 4340 Chromium-Molybdenum Steel Sheet from United States
> AISI 4340 is a nickel-chromium-molybdenum alloy steel supplied as flat-rolled sheet over 600 mm wide. It is used in aerospace and automotive components requiring high strength and toughness. Since it is not a stainless, electrical, or high-speed steel, it falls under the "Other" category for alloy steel flat-rolled products.
Duty Rate — United States → Canada
50%
Rate breakdown
26SUR5050%United States Surtax Order (2026) — 50% on US products
Import Tips
• > Ensure the steel's nickel content is documented, as it affects the alloy classification
• Provide the CBSA with the full chemical composition from the mill
• If the sheets are cold-rolled, they may be classified under a different tariff item — verify the processing condition