Steel and iron products represent the largest category of CBAM-covered imports into the EU. If you import hot-rolled coil, cold-rolled sheet, tubes, structural steel, or any of the dozens of steel and iron products covered by the regulation, CBAM is now a core cost of doing business — and one of the most complex to manage correctly.
CBAM covers a wide range of steel and iron products identified by specific CN codes, including hot-rolled, cold-rolled, coated, and fabricated steel. Steel importers must report the embedded carbon emissions in their imports — typically 1.5 to 2.5 tonnes of CO2 per tonne of steel for basic oxygen furnace production — and purchase CBAM certificates at the EU ETS carbon price. Using actual supplier data instead of default values can reduce certificate costs by 20–40%, but obtaining and verifying that data requires specialist expertise.
Key Takeaways
- Steel is the highest-volume CBAM-covered product category for Irish importers
- Embedded emissions for steel range from 0.4 tCO2/t (electric arc furnace) to 2.5+ tCO2/t (basic oxygen furnace)
- The production method (BOF vs EAF) has the biggest impact on embedded emissions and CBAM cost
- Default values for steel are significantly higher than actual emissions from modern producers
- Procurement teams must factor CBAM costs into supplier evaluation and pricing
Which Steel Products Are Covered
CBAM covers steel and iron products across a wide range of CN codes, including:
- Raw materials — pig iron, ferro-alloys, iron and steel granules
- Semi-finished — ingots, billets, slabs, blooms
- Flat products — hot-rolled coil and sheet, cold-rolled, coated (galvanised, painted)
- Long products — bars, rods, angles, shapes, sections, wire
- Tubes and pipes — seamless and welded, including hollow sections
- Fabricated products — certain downstream products made primarily of steel
The full list of covered CN codes runs to several pages, and classification errors are one of the most common — and costly — mistakes importers make. Misclassifying a product can mean missed reporting obligations, incorrect emissions declarations, or unnecessary certificate purchases. If you’re unsure whether your specific products are covered, contact us for a product classification review.
Understanding Steel Emissions — And Why They’re Difficult to Calculate
The embedded emissions in steel depend on the production route, but the reality on the ground is far more nuanced than a simple BOF-versus-EAF distinction.
Basic Oxygen Furnace (BOF) production uses iron ore and coal/coke as primary inputs, generating typical emissions of 1.5–2.5 tCO2 per tonne of crude steel. Electric Arc Furnace (EAF) production uses scrap steel and electricity, generating typical emissions of 0.4–0.8 tCO2 per tonne of crude steel — though indirect emissions vary significantly depending on the electricity grid powering the furnace.
But these headline figures mask significant complexity. In practice, most steel plants don’t fall neatly into one category. Many facilities blend scrap with virgin material, operate multiple furnace types, or use a mix of energy sources that changes seasonally. Downstream processing — rolling, coating, galvanising, fabrication — adds further emissions that must be accounted for, each stage with its own calculation methodology and data requirements. And CBAM requires emissions data at the installation level, not from industry averages or country-level estimates.
The interaction between these variables is where specialist knowledge becomes essential. Correctly applying the EU’s prescribed methodology — including system boundaries, precursor emissions, and production-route-specific calculation rules — is a technical exercise that goes well beyond selecting BOF or EAF from a dropdown. Talk to our team if you need support translating your supply chain into accurate, verifiable emissions data.
CBAM Costs for Steel Importers
At an ETS carbon price of €75/tCO2, indicative CBAM certificate costs:
| Production Route | Emissions (tCO2/t) | CBAM Cost per Tonne |
|---|---|---|
| BOF (typical) | 2.0 | €150 |
| BOF (efficient) | 1.5 | €112 |
| EAF (coal grid) | 0.8 | €60 |
| EAF (clean grid) | 0.4 | €30 |
| Default value (if no data) | 2.5+ | €188+ |
For an importer bringing in 10,000 tonnes of BOF steel per year, CBAM certificates could cost €1.1–€1.5 million annually — rising as free ETS allowances phase out through 2034. The financial stakes make accuracy essential: overestimating emissions means overpaying for certificates, while underestimating creates regulatory risk and potential penalties under the CBAM enforcement framework.
Why Supplier Data Matters — And Why It’s Hard to Get Right
The single most impactful factor in managing CBAM costs is obtaining actual emissions data from your suppliers. Default values assume worst-case production processes, and using them typically inflates your CBAM obligation by 20–40% compared to actual data from a modern, efficient producer. For a €1 million annual CBAM obligation, that’s €200,000–€400,000 in avoidable costs every year.
But securing accurate supplier data is far from straightforward:
- Supplier reluctance — Many non-EU steelmakers have no regulatory obligation to share emissions data and may be unwilling to disclose production details they consider commercially sensitive
- Data quality — Even when suppliers provide data, it may not meet the EU’s verification standards or use the correct system boundaries and calculation methodologies
- Multi-stage supply chains — Steel passing through several facilities requires emissions data from each stage, often involving different companies in different jurisdictions, each with their own reporting norms
- Verification requirements — The EU increasingly expects third-party verified emissions data, and the gap between what suppliers provide and what the regulation demands is where costly errors occur
Each of these challenges compounds the others. A supplier who does share data may use different system boundaries than the regulation requires; a multi-stage chain may have one cooperative facility and two that refuse to engage. The CBAM definitive period brings financial penalties for inaccurate declarations, so getting your data processes right from the outset is not optional — it’s a financial imperative.
Get in touch for a free assessment — we help importers identify and close supplier data gaps before they turn into enforcement exposure.
Strategic Implications for Procurement
CBAM fundamentally changes how steel procurement teams should evaluate suppliers. A supplier offering steel at €50/tonne less than a competitor is no longer cheaper if their emissions intensity results in €80/tonne more in CBAM certificates.
But integrating carbon costs into procurement decisions is more complex than it sounds. It requires revised total-cost-of-ownership models, contractual frameworks that obligate suppliers to provide emissions data in the correct format, and ongoing monitoring as carbon prices, production methods, and the regulation itself all evolve simultaneously.
The intersection of trade compliance, carbon accounting, and commercial negotiation requires specialist knowledge that sits outside typical procurement expertise — and getting the framework wrong can lock you into supplier arrangements that look competitive today but carry escalating CBAM costs through the allowance phase-out. Talk to us about embedding CBAM into your procurement process before your next major sourcing decision. See our procurement compliance page for more on this.
How Clearscope Helps Steel Importers
Steel CBAM compliance touches product classification, emissions accounting, supplier management, procurement strategy, and regulatory reporting — areas that require deep, current knowledge of both the regulation and the steel industry. This is exactly where Clearscope operates.
Our CBAM compliance services for steel importers include:
- Product classification and scope analysis — Definitively confirming which of your steel and iron products fall within CBAM scope, preventing costly misclassification
- Emissions quantification — Calculating embedded emissions using the correct methodologies, system boundaries, and data sources for your specific supply chain
- Supplier engagement and data management — Structured programmes to obtain, validate, and maintain installation-level emissions data from your non-EU steelmakers
- Cost modelling and scenario planning — Projecting your annual CBAM certificate obligations under different carbon price, allowance phase-out, and supplier scenarios
- Procurement integration — Embedding CBAM considerations into your purchasing processes, supplier evaluation criteria, and contract terms
- Ongoing compliance management — Keeping your CBAM reporting current as the regulation evolves, CBAM certificates requirements change, and your supply chain develops
The margin for error is small and the financial exposure is significant. Get in touch for a steel-specific CBAM assessment.
Frequently Asked Questions
Does CBAM apply to all steel imports?
CBAM applies to steel and iron products covered by specific CN codes — including most primary, semi-finished, flat, long, and tubular products. Not all downstream items are covered, and misclassification is one of the most common compliance errors we see. If you're unsure about specific products, check with our team.
How do I know the emissions intensity of my steel supplier?
You need installation-level data covering production processes, energy consumption, and direct emissions — all conforming to EU methodological standards. The gap between what suppliers typically provide and what the regulation actually requires is significant, and it's one of the most common areas where we help importers avoid costly errors.
Is EAF steel exempt from CBAM?
No. All covered steel products are subject to CBAM regardless of production method. However, EAF steel typically has much lower embedded emissions than BOF steel, resulting in significantly lower CBAM certificate costs.
Will CBAM make non-EU steel uncompetitive?
CBAM is designed to equalise carbon costs, not create a trade barrier. Non-EU steel with emissions intensity comparable to EU production will face similar costs. The competitive disadvantage falls on high-emission producers who haven't invested in decarbonisation.