Duty Rate (from China)
Subheadings
Products classified under Tariff item 2849.90
Amorphous Boron Carbide Granules 10-50 Micron
Amorphous boron carbide granules in the 10-50 micron range, used as a metallurgical additive and ceramic raw material. This chemically defined boron carbide compound is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined, other than those specified elsewhere.
2849.90.00Boron Carbide Abrasive Grit
Boron carbide (B4C) grit used in high-performance abrasives and armor materials. Classified under tariff item 2849.90.00 as other chemically defined carbides, excluding metal-sintered cermets, ideal for nozzle linings and cutting.
2849.90.00Boron Carbide Abrasive Micro-Powder F220
F220 grit boron carbide micro-powder standardized for precision lapping and polishing of semiconductors and optics. This chemically defined boron carbide powder is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined, in powder form.
2849.90.00Boron Carbide Powder B4C 99% Purity
High-purity boron carbide powder with 99% purity, used as an abrasive in polishing and grinding. This chemically defined inorganic compound of boron is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Boron Carbide Sputtering Target Material
High-density boron carbide material prepared for thin-film deposition via sputtering in semiconductor manufacturing. This chemically defined boron carbide in raw target form is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Chromium Carbide Additive for Cermets
Granular chromium carbide (Cr3C2) in the 10-50 micron range, specifically for mixing into cermet powder formulations for powder metallurgy. This chemically defined chromium carbide is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Chromium Carbide Powder
Chromium carbide (Cr3C2) powder applied in thermal spray coatings for corrosion resistance. Classified under tariff item 2849.90.00 for chemically defined carbides excluding those sintered with metals, used in aerospace and petrochemical industries.
2849.90.00Chromium Carbide Powder (Cr3C2)
High-purity chromium carbide (Cr3C2) powder used in thermal spray coatings for wear-resistant surfaces. This chemically defined inorganic compound of chromium is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Chromium Carbide Sputtering Target
Dense chromium carbide (Cr3C2) disc used as a sputtering target for thin-film deposition. This chemically defined chromium carbide in unwrought form is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Chromium Carbide Thermal Spray Wire
Continuous wire form of chromium carbide composite (60% Cr3C2 in nickel-chromium matrix) for HVOF thermal spraying. The primary chromium carbide component qualifies it under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Chromium Carbide Wear Plates
Pre-formed plates consisting primarily of chromium carbide overlay on steel backing for chute liners and conveyor wear parts. The functional chromium carbide layer determines classification under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Cr3C2 Chromium Carbide Rods
Hot-pressed polycrystalline chromium carbide (Cr3C2) rods used as stock material for machining into pump seals and valve components. This chemically defined carbide in cylindrical form is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Hafnium Carbide Powder
Hafnium carbide (HfC) ultra-high temperature ceramic powder for rocket nozzles. Falls under tariff item 2849.90.00 as chemically defined carbide, with melting point exceeding 3900°C.
2849.90.00High-Purity Boron Carbide for Nuclear Applications
Ultra-high purity boron carbide specifically for neutron absorption in nuclear reactors. This chemically defined boron carbide compound is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined, distinguished by isotopic purity.
2849.90.00High-Purity Chromium Carbide Crystals
Synthetic single-crystal chromium carbide (Cr3C2) grown for research and calibration standards in materials science. This chemically defined compound is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Molybdenum Carbide Catalyst
Molybdenum carbide (Mo2C) nanoparticles used as hydrotreating catalysts in refineries. Falls under tariff item 2849.90.00 as chemically defined carbide for chemical process applications, with high stability under harsh reaction conditions.
2849.90.00Nano-Chromium Carbide Particles
Ultrafine nanocrystalline chromium carbide (Cr3C2) particles averaging 50nm for advanced composite materials and catalysts. This pure, chemically defined compound is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Niobium Carbide Powder
Niobium carbide (NbC) powder strengthening superalloys for jet engines. Classified under tariff item 2849.90.00 for chemically defined form excluding alloys, critical for high-temperature structural integrity.
2849.90.00Reaction-Bonded Boron Carbide Precursor Powder
Specialty boron carbide powder designed for reaction-bonded ceramic processing in armor and wear-resistant applications. This pure chemical compound prior to sintering is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Silicon Carbide Powder
High-purity silicon carbide (SiC) powder used in abrasives, refractories, and ceramics production. It is a chemically defined carbide of a non-metal, classifiable under this tariff item as a carbide, whether or not chemically defined, and not in sintered form with metal.
2849.90.00Tantalum Carbide Powder
Tantalum carbide (TaC) powder for electronics and cutting tools, chemically pure and not combined with metals. It is a chemically defined carbide of a metal, classifiable under this tariff item as a carbide, whether or not chemically defined, with high corrosion resistance.
2849.90.00Titanium Carbide Powder
Titanium carbide (TiC) powder for cermet production and wear-resistant parts, chemically pure and before sintering with metals. It is a chemically defined carbide of a metal, classifiable under this tariff item as a carbide, whether or not chemically defined, offering a high melting point for extreme environments.
2849.90.00Tungsten Carbide Balls
Precision-ground tungsten carbide spheres used in bearings, valves, gauging, and grinding media. These sintered, unmounted carbide balls are classified as tungsten carbide in unworked form before final polishing, falling under tariff item 2849.90.00 for other carbides.
2849.90.00Tungsten Carbide Buttons for Rock Drilling
Hemispherical tungsten carbide buttons inserted into drill bits for mining and rock drilling. These sintered, unmounted carbide pieces provide extreme hardness for penetrating hard rock and are classified under tariff item 2849.90.00 as other carbides.
2849.90.00Tungsten Carbide Gauge Blanks
Sintered tungsten carbide blanks used for plug and thread gauges in metrology. These unwrought carbide forms ensure dimensional accuracy in manufacturing and are classified under tariff item 2849.90.00 as other carbides.
2849.90.00Tungsten Carbide Insert Blanks
Pressed and sintered tungsten carbide blanks for turning and milling inserts, chemically defined WC compound. These unwrought carbide shapes are used in CNC machining for metal cutting and fall under tariff item 2849.90.00 before final grinding.
2849.90.00Tungsten Carbide Nozzles
Sintered tungsten carbide nozzles for sandblasting and waterjet cutting, chemically defined carbide. These unworked forms before final threading offer high wear resistance for abrasive flows and are classified under tariff item 2849.90.00.
2849.90.00Tungsten Carbide Powder
Fine powder composed of tungsten carbide (WC), a chemically defined compound used primarily in manufacturing cutting tools and wear-resistant parts. It falls under tariff item 2849.90.00 as a carbide of tungsten.
2849.90.00Tungsten Carbide Rod Blanks
Unmachined cylindrical rods made from sintered tungsten carbide, used as blanks for drills and end mills. Classified under tariff item 2849.90.00 as tungsten carbides in unworked form, per chapter exclusions for worked shapes.
2849.90.00Tungsten Carbide Seal Rings
Sintered tungsten carbide rings used in mechanical seals for pumps and valves. These basic carbide shapes, chemically defined, offer corrosion and wear resistance and fall under tariff item 2849.90.00.
2849.90.00Tungsten Carbide Wear Plates
Flat sintered plates of tungsten carbide for lining crushers and chutes against abrasion. Covered by tariff item 2849.90.00 as tungsten carbides in basic shapes, not advanced workings, essential for mining equipment durability.
2849.90.00Tungsten Carbide Wire Drawing Dies
Cylindrical sintered tungsten carbide dies with central hole for wire drawing processes. Classified under tariff item 2849.90.00 as unwrought carbide shapes, used in metal wire production lines.
2849.90.00Ultra-Fine Boron Carbide Nanopowder <500nm
Nanoscale boron carbide powder with average particle size less than 500nm for advanced composites and coatings. This chemically defined boron carbide nanomaterial is classified under tariff item 2849.90.00 as a carbide, whether or not chemically defined.
2849.90.00Vanadium Carbide Powder
Vanadium carbide (VC) powder used as a grain refiner in steel alloys and tool steels, chemically defined and not chemically combined as complex salts. It is a carbide of a metal, classifiable under this tariff item as a carbide, whether or not chemically defined, enhancing hardness without brittleness.