CPM-M4 Tool Steel Polished Round Bar from Mexico
19 mm diameter CPM-M4 powder metallurgy tool steel bar, polished surface for high-performance milling cutters. HTS 7228.50.10.60 for this tool steel (U.S. note (e)(i): >1.2% C, >10.5% Cr equiv) round bar just over 18 mm with polished cold-finish.
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
• PM grades need detailed process/material certs; standard D2/M2 certs insufficient for CPM variants
• Minimum dimension tolerance ±0.1mm required for .10.60; oversized tolerance risks 7228.50.30
• No secondary operations like centerless grinding if resembling hot-rolled; strict cold-finish proof