What is the UK CBAM default value for aluminium powder and flakes?
Two codes, two defaults. Non-lamellar aluminium powder (7603 10 00) carries 3.364 tCO2e per tonne under HMRC's UK CBAM; lamellar powder and flakes (7603 20 00) carry 2.886. Pellets of aluminium are excluded from both codes, and spangles from the flake code.
Two codes
- 7603 10 00: powders of non-lamellar structure, excluding pellets: 3.364 tCO2e per tonne.
- 7603 20 00: powders of lamellar structure, and flakes, excluding pellets and spangles: 2.886.
Structure decides the code
Non-lamellar means granular or spherical particles; lamellar means flat, plate-like particles. Your product specification usually says which. The two defaults sit 0.478 apart.
Ingot is the precursor
Powder starts as unwrought aluminium under 7601, with defaults from 2.030 to 2.136. Your own melting furnace fuel adds to it.
Ingot behind 100 tonnes of atomised powder
- 105 t of non-alloy ingot, 7601 10 90, for 100 t of powder (example yield).
- 105 x 2.136 = 224.28 tCO2e, or 2.243 per tonne of powder from ingot alone.
- Against the 3.364 default, your melting fuel decides whether actual data helps.
What Senseible does here
Senseible reads ingot purchases by supplier with your melting furnace fuel invoices, so your powder figure can be set against 3.364 or 2.886. We build the figure from your records and check every figure in-house; for the UK it must then be verified by a verifier accredited for UK CBAM. Have your own verifier? Send it to them.
Sources: HMRC, UK CBAM aluminium default values (published 16 October 2026), HMRC, Goods within the aluminium sector in scope of UK CBAM
Last reviewed 2026-11-03.