Muntz Metal Ingot from Mexico
Alpha-beta duplex copper-zinc alloy ingot (60Cu-40Zn) used for hot working into sheets and plates, falls under other copper alloys 7403.29.0180 as refined unwrought brass.
Duty Rate — Mexico → United States
1%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Certify exact zinc-copper ratio via spectrometry to confirm brass alloy status
• Use proper packaging to prevent oxidation affecting purity classification
• Declare intended end-use as industrial fabrication, not consumer products