HS code · 6-digit subheading
HS Code 8103.91 – Tantalum; crucibles
HS code 8103.91 is the 6-digit subheading for tantalum, crucibles. It is used for tantalum laboratory crucibles, tantalum crystal growth crucibles, tantalum vacuum furnace crucibles, tantalum melting crucibles and tantalum evaporation crucibles.
What HS 8103.91 covers
This specific HS code is dedicated to tantalum crucibles, which are specialized containers used in high-temperature applications. Tantalum's extremely high melting point (2,996 °C), excellent corrosion resistance, and inertness make it an ideal material for crucibles used in laboratories, metallurgy, and crystal growth processes where purity and resistance to aggressive chemicals are paramount. Major importers are typically research institutions, semiconductor manufacturers, and specialized metallurgical industries in technologically advanced countries like Japan, the United States, Germany, and South Korea. Exporters are usually nations with expertise in precision manufacturing of refractory metals, such as China, the United States, and Germany. The trade in tantalum crucibles is driven by the demand for ultra-pure material processing in high-tech sectors, with size, wall thickness, and purity being critical specifications.
- Covers
- Tantalum laboratory crucibles
- Tantalum crystal growth crucibles
- Tantalum vacuum furnace crucibles
- Tantalum melting crucibles
- Tantalum evaporation crucibles
- Tantalum sintering crucibles
- Examples
- Global Advanced Metals Tantalum Crucibles
- H.C. Starck Tantalum Crucibles
- Ningxia Orient Tantalum Industry Tantalum Crucibles
- Plansee Tantalum Crucibles
Codes often confused with 8103.91
Common mistake. This code could be confused with 810399 (other tantalum articles) if the item is a tantalum container but not strictly a crucible, or with crucibles made of other refractory metals like molybdenum (810299) or tungsten (810199).
Top exporters and importers of HS code 810391, 2025
In 2025, the largest exporter of HS code 810391 in UN Comtrade data was Austria, with 33% of world exports; the largest importer in UN Comtrade data was the United States, with 54% of world imports. Bahrain did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 99% of its imports here ($365K, CEPII BACI), so it may also belong among the top importers.
Top exporters 2025 · share of world exports
- 1 Austria $1.3M 33% of world exports
- 2 United States $1.1M 29% of world exports
- 3 Switzerland $408K 11% of world exports
World total: $3.8M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $2.6M 54% of world imports
- 2 Malaysia $1.1M 22% of world imports
- 3 India $138K 2.9% of world imports
Bahrain did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 99% of its imports here ($365K, CEPII BACI), so it may also belong among the top importers.
World total: $4.8M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for 8103.91
Brazil does not split HS 8103.91: its NCM code is 8103.91.00.
All Brazil NCM codes in heading 81.03 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 8103.91
What is HS code 810391?
HS code 810391 is a 6-digit subheading in the Harmonized System that covers: Tantalum; crucibles. This specific HS code is dedicated to tantalum crucibles, which are specialized containers used in high-temperature applications. Tantalum's extremely high melting point (2,996 °C), excellent corrosion resistance, and inertness make it an ideal material for crucibles used in laboratories, metallurgy, and crystal growth processes where purity and resistance to aggressive chemicals are paramount. Major importers are typically research institutions, semiconductor manufacturers, and specialized metallurgical industries in technologically advanced countries like Japan, the United States, Germany, and South Korea. Exporters are usually nations with expertise in precision manufacturing of refractory metals, such as China, the United States, and Germany. The trade in tantalum crucibles is driven by the demand for ultra-pure material processing in high-tech sectors, with size, wall thickness, and purity being critical specifications.
What products fall under HS code 810391?
Tantalum laboratory crucibles, Tantalum crystal growth crucibles, Tantalum vacuum furnace crucibles, Tantalum melting crucibles, Tantalum evaporation crucibles, Tantalum sintering crucibles
What are common misclassifications for HS code 810391?
This code could be confused with 810399 (other tantalum articles) if the item is a tantalum container but not strictly a crucible, or with crucibles made of other refractory metals like molybdenum (810299) or tungsten (810199).
Which countries are the top exporters of goods under HS code 810391?
In 2025, the top exporters of HS code 810391 in UN Comtrade data were Austria ($1.3M, 33% of world exports), the United States ($1.1M) and Switzerland ($408K). World exports came to about $3.8M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 810391?
In 2025, the top importers of HS code 810391 in UN Comtrade data were the United States ($2.6M, 54% of world imports), Malaysia ($1.1M) and India ($138K). World imports came to about $4.8M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Bahrain did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 99% of its imports here ($365K, CEPII BACI), so it may also belong among the top importers.
How is HS code 810391 structured?
HS code 810391 is a 6-digit subheading under the Harmonized System. The first 2 digits (81) identify the chapter, digits 3-4 (03) identify the heading, and digits 5-6 (91) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 810391?
In Brazil, HS code 810391 is NCM 8103.91.00. The last two digits are 00 because Brazil does not split this HS code further.