# What are the UK CBAM default values for galvanised and coated steel sheet?

Canonical: https://senseible.earth/answers/uk-cbam-galvanised-coated-sheet-default

HMRC's UK CBAM default for hot-dip galvanised flat steel, not corrugated (7210 49 00), is 3.049 tCO2e per tonne, and 3.055 if corrugated. Electro-galvanised sheet is 2.458, painted or plastic-coated (PPGI) 2.443, and tinplate under 0.5 mm 3.379.

## Defaults under heading 7210

- 7210 49 00: zinc coated (not electrolytic), not corrugated: 3.049 tCO2e per tonne.
- 7210 41 00: zinc coated, corrugated: 3.055.
- 7210 30 00: electrolytically zinc coated: 2.458.
- 7210 70 80: painted, varnished or plastic coated: 2.443.
- 7210 12 20: tinplate under 0.5 mm: 3.379.

## What a coater adds

Your figure starts with the cold-rolled or hot-rolled substrate as a precursor. Annealing, pickling and galvanizing furnace fuel are inside the UK boundary; zinc and paint are not steel precursors.

## Width matters

These codes cover sheet 600 mm wide or more. Galvanised or painted strip narrower than 600 mm sits under heading 7212, with defaults of its own.

## What Senseible does here

Senseible reads substrate coil purchases with annealing and zinc pot fuel invoices, so a coater's own figure can be set against these defaults. 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.

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Sources: [HMRC, UK CBAM iron and steel default values (published 16 October 2026)](https://www.gov.uk/government/publications/check-the-default-values-for-the-carbon-border-adjustment-mechanism-cbam/iron-and-steel-default-values), [HMRC, UK CBAM monitoring, reporting and verification technical guidance (October 2026)](https://assets.publishing.service.gov.uk/media/6ad219fe0f7b53973e02680f/CBAM_technical_guidance.pdf)

Last reviewed 2026-11-02.