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HY-80 High-Strength Alloy Steel Plate from China

HY-80 nickel-chromium-molybdenum alloy steel plate, hot-rolled, thickness 4.75 mm or more, width exceeding 600 mm, not in coils, no further working. Although high-strength, it falls under HTS 7225.40.30 'other' as it doesn't precisely match the Chapter 72 high-strength steel definition for yield point. Used in naval shipbuilding and heavy structural applications.

Duty Rate — China → United States

35%

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

Test and certify yield strength does not meet exact high-strength steel thresholds (275 MPa for <3mm or 355 MPa for ≥3mm) to remain in 'other'

Include heat analysis reports showing alloy content excluding tool steel or ball-bearing steel compositions

For defense end-use, expect ITAR/DFARS documentation beyond standard HTS entry