Sourcing Hafnium Nitride Powder from China

Hafnium nitride powder: 4% duty

Read from the UK Trade Tariff on 1 October 2026, heading 2850 covers hydrides, nitrides, azides, silicides and borides, excluding compounds that are also carbides. Hafnium nitride powder falls within other hydrides and nitrides, 2850 00 20 90. The table shows specification variants sharing this commodity line.

Goods from China carry 4% duty, with no anti-dumping or countervailing duty listed. The suspension on this line names particular lithium aluminium hydride solutions and titanium nitride, rather than hafnium nitride. The tariff attaches import and export waste controls. For waste from China imported into England under notification controls, shipment requires consent from the Environment Agency and other competent authorities involved.

Ask your customs broker to confirm waste status and the attached controls before shipment. Confirm the commodity code against composition and supplied form, especially for blends or finished parts. For the wider heading, see the zirconium nitride powder guide.

Specify hafnium nitride composition and particle size

Order hafnium nitride powder by chemical identity, phase composition and intended process. Agree hafnium and nitrogen content, oxygen and carbon limits, zirconium and other metallic impurities, particle size distribution and the test methods. State whether purity is reported on a metals basis or for the whole material. Require a certificate of analysis linked to each supplied batch.

Agree sealed packaging, storage instructions and a retained reference sample. For Great Britain, confirm with HSE the applicable UK REACH registration requirements, including any exemption or only representative arrangement relevant to your imports. Confirm the route before ordering. Ask HSE to confirm the applicable GB CLP labelling requirements; a safety data sheet is required for hazardous chemicals supplied for workplace use.

Worked duty example

Illustrative example, not a quote: 2 kg of hafnium nitride powder for a laboratory trial, illustrative under 2850 00 20 90, invoiced at £2,000 free on board, with £300 of freight and insurance to the UK. The customs value is £2,300. Duty at 4% is £92. Import VAT at 20% is charged on the customs value plus duty, £2,392, so it is £478.40. Import taxes total £570.40; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £92 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Identity: match container batch numbers to the order and certificate of analysis; check hafnium nitride identity and phase composition using an independent sample.

Composition: compare measured nitrogen, oxygen, carbon and metallic impurities with the agreed limits. Check that the purity calculation uses the same basis as the quotation.

Particle size: verify the distribution using the agreed preparation and measurement method. Record agglomeration and compare the delivered material with the approved sample.

Packaging: check seals, container condition, net weight and batch identification. Compare chemical labels with the safety data sheet where required. Arrange quality inspection around these checks.

What goes wrong

A purity figure can conceal different calculation methods: a metals-only result does not establish oxygen or nitrogen content. Powder can also fail because the phase composition differs from the approved sample, particles form agglomerates, or contamination exceeds the agreed limits. Appearance alone cannot confirm acceptance.

Set acceptance limits and test methods in the purchase order. Keep a retained sample and hold material with damaged seals or inconsistent batch documents pending investigation. Use factory verification to check who manufactures the powder and how batches are tested.

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.