CPM-M4 Tool Steel Flat Stock 8x20mm from Mexico
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 — Mexico → United States
10%
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
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