Sourcing tantalum crucibles from China

Duty and the crucible commodity code

Read from the UK Trade Tariff on 6 November 2026, tantalum crucibles under 8103 91 00 00 carry 0% duty for goods from China. No anti-dumping or countervailing duty or suspension is listed. Heading 8103 covers tantalum and its articles, including waste and scrap. The table includes related fabrication materials and scrap for context; see the wider tantalum guide.

The tariff attaches import and export waste controls to these lines. For a China-to-England consignment subject to waste notification controls, the exporter must apply to the competent authority in the dispatch country for consent. Confirm the applicable waste procedure with your customs broker before shipping discarded or contaminated crucibles; do not assume the tariff entry settles the waste status.

Confirm the finished crucible, its material and any separately supplied accessories against the commodity code guidance. Import VAT is normally 20%, calculated on the customs value plus applicable duties, charges and relevant incidental expenses. See UK import duty and VAT.

Specify the crucible and its furnace conditions

Send a drawing showing internal and external dimensions, wall and base thickness, rim shape, base profile and lid fit where applicable. State whether the body must be seamless or whether welded construction is acceptable. Agree measurement points and acceptance tolerances before approving the sample.

Specify pure tantalum or the agreed alloy, chemistry limits and a material certificate linked to the production batch. Describe the charge material, operating atmosphere, heating cycle and cleaning method. Ask the supplier to confirm suitability for those conditions rather than accepting a general temperature claim.

Articles supplied for use at work require adequate information for safe use and maintenance. Obtain instructions covering the agreed application, handling, cleaning and operating conditions. Use factory verification to check who forms, welds and finishes the crucibles.

Worked duty example

Illustrative example, not a quote: 100 tantalum crucibles for laboratory furnace use, illustrative order under 8103 91 00 00, invoiced at £45,000 free on board, with £900 of freight and insurance to the UK. The customs value is £45,900. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £45,900, so it is £9,180. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Material: match batch identification to the material certificate and check chemistry against the purchase specification. Arrange independent analysis where contamination would compromise the process.

Geometry: measure opening, depth, wall and base thickness, rim roundness and base flatness against the drawing. Check the crucible and any lid in the actual holder.

Surface and joints: inspect inside and outside for cracks, folds, burrs, embedded debris and residues. For welded bodies, agree joint inspection and any leak testing before production.

Packing and documents: check individual protection against dents and abrasion, batch identification and operating instructions. Record arrival condition before trial use; see quality inspection.

What goes wrong

A crucible can match the outside dimensions yet have a thin base, uneven walls or a rim that does not fit the holder. Unapproved welded construction, surface contamination and certificates unrelated to the delivered batch are acceptance risks. Agree rejection criteria and inspect before dispatch.

A supplier's furnace trial may use a different charge or atmosphere from yours. Approve a sample in the intended process before repeat purchasing, and record distortion, leakage, cracking and contamination after use. Keep waste-status questions separate from acceptance of new crucibles.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.