How does a flange forging unit work out its CBAM figure?
Steel flanges and many forgings fall under CBAM iron and steel goods. Count fuel for heating and heat treatment, divided by tonnes of finished flanges, then add the embedded emissions of the billets or bars used, scaled by tonnes consumed per tonne shipped. Forging and machining losses push that second part up.
Your own part
Furnace oil, PNG or LPG in the forging and heat-treatment furnaces. Electricity for presses and machining is recorded but not charged for steel.
The billets
Ask the steel mill for embedded emissions per tonne of billet or bar. If you buy from traders, ask them for the mill name and its figure.
Yield
Track input tonnes per tonne of finished flange from your production register. Turnings sold as scrap still count as input used.
Worked example
- Furnace oil: 38 L per tonne of flanges x 2.97 kg = 113 kg CO2
- Billets used: 1.35 t per tonne of flanges x 2.1 t CO2 = 2.84 t CO2
- Embedded emissions: about 2.95 t CO2 per tonne
Illustrative. Use the mill's declared figure and your own yield.
What Senseible does here
Senseible reads fuel, power and production records into dated, fingerprinted installation records, the starting point for the actual emissions your EU importer asks for.
Sources: CBAM Regulation (EU) 2023/956, consolidated, Implementing Regulation (EU) 2023/1773, monitoring rules, Implementing Regulation (EU) 2025/2621, CBAM default values
Last reviewed 2026-10-22.