Sourcing hafnium carbide powder from China
Hafnium carbide powder from China falls within other carbides, with UK duty at 4% throughout the supplied heading and no listed trade remedy or suspension. Check the UK REACH registration position before importing, and agree composition and particle-size tests. Cambridge China Bridge sources hafnium carbide powder.
Hafnium carbide powder: 4% duty
Read from the UK Trade Tariff on 1 October 2026, heading 2849 covers carbides, whether or not chemically defined. Hafnium carbide powder is a candidate for the other-carbides line, 2849 90 90 00, carrying 4% duty for goods from China. The supplied facts list no anti-dumping or countervailing duty and no suspension. Only this line is relevant to the powder covered here.
The tariff attaches waste import and export controls. For powder offered as waste or recovered residue from China, confirm the applicable requirements with your customs broker before shipment. For notified waste entering England, the exporter must apply to the competent authority in the dispatch country for consent. Ask the supplier to document whether the shipment is manufactured powder or waste.
Confirm the composition and product form with your broker using finding your commodity code. For other materials in this heading, see the silicon and tungsten carbide guide.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Other carbides, including hafnium carbide powder | 2849 90 90 00 | 4% | None |
Specify hafnium carbide composition and particle size
Specify hafnium carbide powder explicitly, including whether additives or a binder are permitted. Agree limits for total carbon, free carbon, oxygen, zirconium and other impurities relevant to your process. Ask how the supplier calculates purity and which impurities its reported result excludes. Require a batch certificate with the agreed analytical methods.
Agree the particle-size distribution, measurement method and sample preparation. Distinguish dispersed particle size from agglomerate size. Specify moisture acceptance, sealed packaging, batch identification and retained samples. Trial the supplied powder in your own process before accepting a repeat batch.
Check the UK REACH registration position before importing. Ask HSE to confirm the registration requirements and whether coverage through an only representative is available for the substance and your annual import volume. Registration is per substance, per legal entity. Classification and labelling must be carried out by someone with scientific competence. A safety data sheet is required when a hazardous chemical is supplied for use at work.
Worked duty example
Illustrative example, not a quote: Illustrative order: 25 kg of hafnium carbide powder in sealed containers under 2849 90 90 00, invoiced at £15,000 free on board, with £2,000 of freight and insurance to the UK. The customs value is £17,000. Duty at 4% is £680. Import VAT at 20% is charged on the customs value plus duty, £17,680, so it is £3,536. Import taxes total £4,216; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £680 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Identity: check that container labels, purchase documents and batch certificates all identify hafnium carbide powder and the same batch.
Composition: independently test agreed carbon, oxygen and impurity limits on representative samples, rather than accepting a generic purity statement.
Particle size: compare the measured distribution with the agreed method and check for coarse contamination or persistent agglomerates.
Packing: check seals, container damage, moisture and net mass on arrival. Retain a labelled sample and record findings using the quality inspection guide.
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What goes wrong
A purity statement can hide an unsuitable impurity profile or exclude oxygen and free carbon from the calculation. A quoted average particle size can also conceal a coarse fraction. Different dispersion methods can make certificates look inconsistent even when they describe the same powder.
Treat caking, damaged seals, mismatched batch records or unexplained changes in composition as reasons to hold the batch for investigation. Agree acceptance methods before ordering, and compare repeat deliveries with retained samples and process-trial results.
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.
Frequently asked questions
What is the UK import duty on hafnium carbide powder from China?
The supplied tariff facts show 4% for other carbides, 2849 90 90 00, with no listed anti-dumping or countervailing duty or suspension. Confirm that the powder belongs in this line.
Does hafnium carbide powder need UK REACH registration?
Check the substance's registration position with HSE, including the requirements for your annual import volume and whether coverage through an only representative is available. Registration is per substance, per legal entity.
What should a hafnium carbide powder certificate show?
Ask for batch identity, the agreed composition and impurity results, particle-size distribution and test methods. Make the purity calculation explicit, including any excluded constituents.
Do waste controls apply to hafnium carbide powder?
The tariff attaches waste controls. Ask your broker to confirm their application to the shipment. For notified waste entering England, the exporter applies to the dispatch country's competent authority for consent.