Sintered Tungsten Rod for Lamp Filaments
A high-purity tungsten rod produced by powder metallurgy sintering, used primarily in manufacturing incandescent and halogen lamp filaments. It qualifies under HTS 8101.94.00.00 as unwrought tungsten in rod form obtained simply by sintering, without further mechanical working. This form provides the necessary ductility and high melting point for filament applications.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 6.6% | +35.0% | 41.6% |
| 🇲🇽Mexico | 6.6% | +10.0% | 16.6% |
| 🇨🇦Canada | 6.6% | +10.0% | 16.6% |
| 🇩🇪Germany | 6.6% | +10.0% | 16.6% |
| 🇯🇵Japan | 6.6% | +10.0% | 16.6% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If mechanically worked after sintering
Rods that undergo drawing, swaging, or other working beyond simple sintering are classified as 'other' tungsten articles.
If in powder form
Tungsten powders, even sintered, fall under waste/scrap or powder provisions rather than sintered bars/rods.
If imported as part of finished semiconductor equipment
If the rod is incorporated into machinery for semiconductor production, it may be classified by end-use under Chapter 84/85.
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Import Tips & Compliance
• Verify purity certificates showing tungsten content to confirm classification under Chapter 81 and avoid reclassification as alloys
• Provide documentation proving the material is 'unwrought' and obtained simply by sintering, not involving drawing or forging
Related Products under HTS 8101.94.00.00
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Unwrought tungsten bars from sintering, raw stock for thermal management heat sinks in electronics and military applications. Under HTS 8101.94.00.00 for simple sintered forms with superior heat dissipation. High density aids in compact designs.
Sintered Tungsten Billet for Armor Penetrators
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Unwrought Tungsten Sintered Rod for Rocket Nozzles
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Unwrought Sintered Tungsten Bar for Aerospace Alloys
Pure tungsten bars created through sintering process, supplied unwrought for melting into high-temperature aerospace superalloys. Classified under HTS 8101.94.00.00 due to being bars obtained simply by sintering without additional processing. Essential for turbine blades and rocket nozzles requiring extreme heat resistance.
Sintered Tungsten Ingot for X-Ray Shielding
Massive sintered tungsten ingots used as raw material for radiation shielding in medical and industrial X-ray equipment. Falls under HTS 8101.94.00.00 as unwrought tungsten bars/rods from simple sintering, prized for density and neutron absorption. No further refinement needed before machining into shields.