What are the UK CBAM default values for aluminium profiles?
HMRC's UK CBAM default for hollow profiles of aluminium alloy (7604 21 00) is 3.894 tCO2e per tonne. Alloy bars and rods (7604 29 10) are 3.365, and non-alloy bars, rods and profiles (7604 10 10) 3.021. Aluminium counts both CO2 and perfluorocarbons.
Defaults under heading 7604
- 7604 21 00: hollow profiles of aluminium alloys: 3.894 tCO2e per tonne.
- 7604 29 10: bars and rods of aluminium alloys: 3.365.
- 7604 10 10: bars, rods and profiles of non-alloy aluminium: 3.021.
Doors and windows sit elsewhere
Finished aluminium doors, windows and frames fall under 7610 10 00, with a UK default of 4.847. A profile cut and assembled into a window frame changes code and default.
Where your number comes from
Billet is the precursor and usually most of the figure; primary and secondary billet are treated separately where known. Your own gas or LPG for billet heating and ageing adds the rest, while grid power for presses is not counted until at least 2029.
What Senseible does here
Senseible reads billet purchases by supplier with your gas or LPG invoices, so your profile figure can be set against 3.894 before your buyer files. 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 2026-11-02.