Trimanganese Tetraoxide (Mn3O4) Powder from Mexico
Mn3O4, or trimanganese tetraoxide, used in ferrites for magnetic applications and as a sintering aid. Classified under HTS 2820.90.00.00 as other manganese oxides, a mixed-valence inorganic compound in Chapter 28. Provides magnetic properties in soft ferrites.
Duty Rate — Mexico → United States
14.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include valence state analysis in specs to differentiate from MnO2 and support oxide classification
• For ferrite production, note end-use but ensure pure form to stay in 2820; mixtures go to 3824
• Monitor for Section VI note 1 restrictions if resembling Section XV metal alloys