CPM-M4 Tool Steel Flat Stock 8x20mm from China
Precision-ground but cold-finished flat stock of CPM-M4 tool steel (1.4% C, 4% Cr, 4% V—note e(i)/(ii)), max 20mm but effective cross-section <18mm, for wear parts. 7228.50.10.40 as other tool steel bars cold-formed.
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
• Clarify 'maximum cross-sectional dimension' in docs—typically larger side for rectangles
• PM steels need detailed analysis certs; powder metallurgy doesn't change steel classification
• Avoid 'ground' terminology if precision-ground exceeds cold-finishing tolerances