5456-H321 Aluminum Alloy Shipbuilding Plate from China
5456-H321 weldable alloy plate exceeding 6.3 mm for hull plating in marine vessels. HTS 7606.92.3025 covers this unclad alloy due to magnesium/chromium composition exceeding pure aluminum limits.
Duty Rate — China → United States
38%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Import Tips
• Document temper and alloy for MFN duty rate application
• Measure thickness at thinnest point to confirm >6.3 mm
• Beware of reclassification if cut to custom sizes post-import