O1 Tool Steel Flat Bar 10x15mm from China
Cold-rolled flat bar of O1 oil-hardening tool steel (0.9% C, 1% Mn, 5% Cr equivalent per note e(iii)), max dimension 15mm, for toolmaking and gauges. Classified under 7228.50.10.40 as cold-finished tool steel bar under 18mm, not high-speed. No further working beyond cold-finishing.
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
• Label with precise dimensions; CBP measures maximum cross-section—over 18mm triggers different rate
• Include heat analysis certificate proving tool steel elements per note (e) to prevent fallback to generic alloy steel
• Avoid bundling with further-worked items; separate shipments reduce misclassification risk