Chapter 7112 — Customs Tariff Headings

Dental Lab Gold Alloy Incineration Ash

Ash produced by incinerating dental prosthesis trimmings and grindings that contain gold alloys with at least 2% gold by weight. This ash is used principally for gold recovery in precious metal refineries, making it classifiable under tariff item 7112.30.00 as ash containing precious metal compounds.

Gold Cyanidation Tailings Ash

Dried and ashed tailings from gold cyanidation leaching processes that contain residual gold compounds. These tailings are processed further for gold recovery, and the ash falls under tariff item 7112.30.00 as ash containing precious metal compounds.

Gold Electroforming Waste Ash

Ash generated from electroforming process wastes that contain gold strike and flash plating compounds. This ash is used for gold recovery and is classified under tariff item 7112.30.00 as ash containing precious metal compounds.

Gold Recovery Ash from Jewelry Manufacturing

Fine ash residue from incinerating jewelry workshop waste, containing gold compounds and trace precious metals. This ash is used principally for precious metal recovery and is classified under tariff item 7112.30.00 as ash containing precious metal compounds.

Jewelry Sweepings Incineration Ash

Ash from burning floor sweepings and dust from gold and silver jewelry workshops, rich in precious metal particulates and compounds. This ash is used for precious metal recovery and falls under tariff item 7112.30.00.

Mixed PGM Anode Slime Ash

Incinerated anode slime ash from copper or nickel electrorefining that contains platinum group metals and gold. This ash is used principally for precious metal recovery and is classified under tariff item 7112.30.00.

Mixed Precious Metal Filter Cake Ash

Incinerated filter cake ash from precious metal refining precipitation filters, containing mixed gold, silver, and PGM compounds. This ash is used for precious metal recovery and falls under tariff item 7112.30.00.

Palladium Electroplating Bath Ash Residue

Ash residue from evaporating and incinerating palladium electroplating rinse waters and sludges, used for palladium recovery. This ash contains precious metal compounds and is classified under tariff item 7112.30.00.

Palladium Membrane Filter Ash

Ashed remains from hydrogen separation palladium membranes used in gas purification systems. This ash contains palladium compounds and is used for palladium recovery, falling under tariff item 7112.30.00.

PGM Thermocouple Recycling Ash

Ash from processing scrapped platinum-rhodium thermocouples in industrial furnaces, used for PGM recovery. This ash contains platinum group metal compounds and is classified under tariff item 7112.30.00.

Platinum Catalyst Recovery Ash

Ash from burned-out automotive catalytic converters and chemical catalysts containing platinum group metals like platinum and palladium compounds. This ash is used principally for PGM recovery and falls under tariff item 7112.30.00.

Platinum Lab Crucible Ash

Ash residue from cleaning and incinerating platinum laboratory crucibles contaminated with precious metal traces. This ash is used for platinum recovery and is classified under tariff item 7112.30.00.

Rhodium-Platinum Alloy Recovery Ash

Specialty ash from high-temperature processing of rhodium-platinum alloys used in thermocouples and glass manufacturing, containing at least 2% platinum by weight. This ash is used for precious metal recovery and falls under tariff item 7112.30.00.

Silver Photographer's Hypo Ash

Incinerated ash from spent photographic fixer solutions (hypo) containing dissolved silver halides for silver recovery. This ash is used for silver recovery and is classified under tariff item 7112.30.00 as ash containing precious metal compounds.

Silver Refinery Ash with Precious Metal Compounds

Ash produced in silver refining processes containing silver compounds and minor gold or platinum impurities, designed for precious metal reclamation. This ash falls under tariff item 7112.30.00 as ash containing precious metal compounds.

14K Gold Watch Scrap

Scrap from decommissioned luxury watches, consisting of 14K gold alloy cases and bracelets, collected for smelting and gold recovery. This material qualifies as waste and scrap of gold, including metal clad with gold, and is imported principally for the recovery of precious metal.

18K Gold Casting Sprues

Excess gold material from lost-wax casting of jewelry, including sprues, gates, and vents in 18K yellow gold. This manufacturing scrap is destined for remelting and gold recovery, qualifying as waste and scrap of gold under this tariff item.

Broken Gold Inlay Scrap

Damaged gold inlays removed from dental prosthetics and decorative furniture, mechanically inlaid. The gold content qualifies as waste and scrap of metal clad with gold, suitable for recovery of the precious metal.

Gold Anode Slime Residue

Sludgy residue from gold electrorefining cells containing slime-attached gold particles. Imported primarily for further recovery processing, this residue is waste and scrap containing gold compounds, classifiable under this tariff item.

Gold Crucible Liners Scrap

Spent graphite crucibles lined with gold flash from high-temperature melting, for stripping. The gold layer adhered by melt qualifies as metal clad with gold, and the crucibles are waste and scrap for gold recovery.

Gold Dental Scrap

Waste material from dental clinics consisting of gold alloy scraps from crowns, bridges, and fillings. This scrap is imported principally for precious metal recovery, and qualifies as waste and scrap of gold under this tariff item.

Gold Electroplating Rack Scrap

Used titanium racks from gold electroplating baths in electronics manufacturing, clad with thin gold layers. These racks are imported for precious metal stripping and recovery, qualifying as metal clad with gold waste and scrap under this tariff item.

Gold-Filled Bead Scrap

Rejected or damaged gold-filled glass/plastic beads from costume jewelry production, with mechanical gold cladding. This waste is imported for recovery of the gold layer, qualifying as metal clad with gold waste and scrap under this tariff item.

Gold Foil Scrap from Gilding

Trimmings and rejects from transfer gold leaf used in bookbinding and architectural gilding applications. This material, being pure gold waste or gold-clad waste, is imported for recovery and qualifies under this tariff item, excluding multi-metal sweepings.

Gold Jewelry Manufacturing Scrap

Trimmings, filings, and clippings from gold jewelry production workshops, primarily 14K or 18K alloys. This scrap is imported for refining to recover gold, fitting this tariff item as gold alloy waste, excluding multi-metal sweepings.

Gold Wire Drawing Scrap

Swarf, turnings, and short ends from fine gold bonding wire production for semiconductors. This pure gold scrap is imported for remelt recovery, qualifying as waste and scrap of gold under this tariff item.

Rolled Gold Sheet Scrap

Trimmed edges and rejects from rolled gold sheet stock used for watch cases and medals. Mechanical rolling qualifies as clad, and this waste is imported for gold recovery under this tariff item.

Scrap from Gold Heat-Treated Parts

Diffusion-bonded gold parts scrap from aerospace seals and connectors, mechanically clad. This scrap is used for gold reclamation and qualifies as metal clad with gold waste under this tariff item.

Scrap Gold from Electronic Connectors

Gold-plated pin connectors and edge fingers salvaged from server motherboards and telecom gear. This waste is principally used for gold recovery, classifying as gold-clad metal scrap under this tariff item.

Vintage Gold Chain Scrap

Tangled and broken 10K-22K gold chains from estate jewelry lots, pre-refined for karat sorting. This material qualifies as gold scrap for recovery purposes under this tariff item.

Platinum Catalyst Residue Scrap

Spent platinum black residue from chemical catalytic converters, where 90% or more passes through a 0.5mm sieve, is classified as waste and scrap of platinum. It is destined for the recovery of platinum and does not contain other precious metals in significant amounts. This residue is a typical by-product of chemical processes and is imported for refining.

Platinum Contact Point Scrap

Worn platinum electrical contact points from relays and switches, consisting of solid platinum tips, are waste and scrap of platinum. These tips are removed from electrical equipment and are imported for the recovery of platinum. They are not part of machinery or electrical goods, as they are scrap material.

Platinum Dental Alloy Scrap

Scrap from melted-down platinum-based dental crowns and bridges, predominantly platinum by weight, is classified as waste and scrap of platinum. Per chapter note 5(a), alloys with 2% or more platinum are treated as platinum alloys. This scrap is imported for the recovery of platinum and does not include metal clad with platinum.

Platinum Electroplating Rack Scrap

Worn titanium racks metal clad with platinum, where the platinum layer is the primary material for recovery, are classified as waste and scrap of metal clad with platinum. Chapter note 7 defines metal clad with precious metal, and this item explicitly includes such material. The racks are discarded after use in electroplating and are imported for platinum recovery.

Platinum Gauge Wire Scrapings

Filings and turnings from precision platinum gauge wire production are waste and scrap of platinum. These are pure platinum scrapings, free of other precious metals, and are destined for refining. They do not constitute sweepings containing other precious metals, as they are a single-metal by-product.

Platinum Jewelry Manufacturing Scrap

Waste trimmings and filings generated during the crafting of platinum rings, bracelets, and necklaces are waste and scrap of platinum. These by-products are collected from jewelry workshops and are imported for the recovery of platinum. They do not include metal clad with platinum or other precious metals.

Platinum Thermocouple Wire Scrap

Discarded platinum-rhodium thermocouple wires from industrial furnaces are waste and scrap of platinum, as platinum predominates by weight per subheading note 3. These wires are used in high-temperature measurement and are imported for platinum recovery. They are not part of machinery, as they are scrap material.

Recovered Platinum Mesh Scrap

Torn platinum woven mesh from laboratory filtration and heating elements is waste and scrap of platinum. The mesh is solid platinum and is discarded after use in pharmaceutical and research applications. It is imported for the recovery of platinum and does not contain other precious metals.

Spent Platinum Crucible Fragments

Cracked and deformed platinum laboratory crucibles discarded after high-temperature use are waste and scrap of platinum. These crucibles are purely platinum without cladding and are imported for metal recovery. They are common in chemical and analytical laboratories and are not classified as goods of Chapter 90, as they are scrap.

Gold Alloy Casting Scrap

Gold alloy casting scrap, including sprues, gates, and defective castings from jewelry manufacturing, is remeltable for precious metal recovery. It falls under tariff item 7112.99.00 as other waste and scrap of precious metal, used principally for recovering gold. The gold content qualifies it as an alloy of precious metal under Chapter 71 Note 5.

Gold Dental Scrap

Gold dental scrap consists of waste material from dental restorations containing gold alloys, primarily used for recovering precious metals through refining. It qualifies under tariff item 7112.99.00 as other waste and scrap of precious metal, not elsewhere specified. The gold alloy content meets the 2% threshold under Chapter 71 Note 5.

Gold-Plated Connector Pins Scrap

Gold-plated connector pins scrap from decommissioned electronics consists of base metal pins mechanically clad with gold, intended for gold recovery. Under Chapter 71 Note 7, metal clad with precious metal is included in this chapter. It falls under tariff item 7112.99.00 as other waste and scrap of metal clad with precious metal, used principally for recovery.

Mixed Precious Metal Sweeps

Mixed precious metal sweeps, including floor sweeps and shop dust from jewelry workshops, contain traces of gold, silver, and platinum alloys. These are classified under tariff item 7112.99.00 as other waste and scrap containing precious metal, used principally for recovery. The alloy composition is treated under Chapter 71 Note 5, with the predominant metal determining the alloy type.

Palladium Electronic Contact Scrap

Palladium electronic contact scrap consists of electrical contacts from switches and relays alloyed with palladium, collected for metal recovery. It falls under tariff item 7112.99.00 as other waste and scrap of precious metal, used principally for recovering palladium. The palladium content qualifies it as an alloy of precious metal under Chapter 71 Note 5.

Platinum Catalytic Converter Scrap

Platinum catalytic converter scrap from vehicles contains platinum group metals and is collected for precious metal recovery. It falls under tariff item 7112.99.00 as other waste and scrap of precious metal, used principally for recovery. The platinum content meets the 2% threshold under Chapter 71 Note 5, classifying it as an alloy of platinum.

Platinum Thermocouple Wire Scrap

Platinum thermocouple wire scrap consists of discarded platinum-rhodium wires from industrial sensors, intended for metal reclamation. It falls under tariff item 7112.99.00 as other waste and scrap of precious metal, used principally for recovery. The platinum content qualifies it as an alloy of platinum under Chapter 71 Note 5.

Rhodium Plating Bath Sludge

Rhodium plating bath sludge is settled sludge from electroplating baths containing rhodium compounds, principally for precious metal recovery. It falls under tariff item 7112.99.00 as other waste and scrap containing precious metal compounds, used for recovery. The rhodium content qualifies it as an alloy of platinum under Chapter 71 Note 5.

Silver Jewelry Manufacturing Scrap

Silver jewelry manufacturing scrap, including trimmings and filings, contains at least 2% silver by weight and is destined for refining. It falls under tariff item 7112.99.00 as other waste and scrap of precious metal, used principally for recovery. The silver content qualifies it as an alloy of silver under Chapter 71 Note 5(c).