Coated Rods and Cored Wire of Base Metal for Soldering, Brazing or Flame Welding

Lead-tin solders clear customs under 8311303000 without a mandatory admissibility permit, but downstream use is regulated. The EPA restricts lead-containing solder in potable water plumbing under the Safe Drinking Water Act, and many states have additional restrictions. Importers should ensure their customers are aware of applicable end-use limitations, particularly for plumbing and electronics applications.

Coated rods and cored wire of base metal for brazing are classified under 8311306000 when the filler metal is a base metal alloy (e.g., copper-phosphorus, copper-zinc). Silver brazing alloys with a significant precious metal content may instead be classified under Chapter 71 as articles of precious metal. The silver content threshold and whether the article is considered a precious-metal product are the key classification factors.