Saying that a steel is “sustainable” is no longer enough today. Markets, regulations and industrial supply chains require verifiable data, shared criteria and internationally recognized standards.

For this reason, Swiss Steel Group has structured its sustainability strategy around a robust system for measuring and reporting CO₂ emissions, based on the Greenhouse Gas Protocol Corporate Standard.
This approach makes it possible to clearly distinguish between different emission sources and to accurately identify where action is needed to reduce them.

Emissions are divided into three categories, the so-called Scopes.

These are emissions that occur within production facilities and are directly controlled by the producer.

This scope includes:

• Metallurgical processes: carbon contained in scrap and ferroalloys is removed through oxygen injection in electric arc furnaces (EAF) and AOD/VOD converters
• Combustion: use of natural gas in burners, coal for slag foaming (necessary for efficiency and refractory protection), and consumption of graphite electrodes
• Heat treatments: heating steel above 1,100 °C in rolling and forging furnaces

The mobility sector accounts for around 44% of total production, with increasing attention also paid to CO₂ emissions reporting across the supply chain.

• Automotive: We are shaping the future of mobility by working closely with the R&D departments of major brands. The goal? Lighter, stronger steels to reduce vehicle consumption and support increasingly accurate CO₂ emissions reporting.
• Aerospace: Here, perfection is not an option—it is a requirement. An aircraft that must accelerate from 0 to 260 km/h in just a few seconds (with a take-off weight of nearly 600 tonnes) needs materials with absolute reliability for landing gear and engines, supported by clear and transparent CO₂ emissions reporting.

• Mechanical Engineering: Represents 27% of our market. We supply steels for machinery that must operate 24/7 without downtime.
• Agriculture and Construction: Earth-moving machines and tractors require steels with extremely high resistance to wear and impact.

Having “Green” steel that performs as well as (or better than) traditional steel is a technological achievement. But how does this material reach Italian workshops producing gears, molds or automotive components, together with accurate CO₂ emissions reporting? This is where Bonomi Acciai comes into play. Our role is to translate the complexity of these sectors into a reliable, on-time service.

1. Certification and Traceability for Critical Sectors
In nuclear or aerospace applications, documentation is as important as the metal itself. Bonomi Acciai does not simply deliver bars or blocks: we provide complete data traceability. For customers operating in controlled supply chains, we ensure that material certificates clearly report Carbon Footprint values and technical specifications required by the strictest standards.

2. Just-in-Time for Automotive
The automotive sector does not wait. Our logistics are designed to meet the tight schedules of automotive component manufacturing (Tier 1 and Tier 2). Thanks to our warehouse and service center, we can supply Green Steel cut to size exactly when the customer’s production line requires it, avoiding costly and obsolete stock.

3. Consulting on New Materials (e.g. Hydrogen)
Many of our customers in mechanical engineering are now entering the hydrogen or renewable energy markets. Often, they are unsure which steel grades are suitable to avoid hydrogen embrittlement or corrosion in marine environments (offshore wind). Our technical department guides them in selecting the most appropriate Swiss Steel grade, preventing costly design errors.

4. Tooling: Longer-Lasting Molds
For the tooling and mold-making sector, Green Steel means durability. We supply mold steels (for plastics or die casting) that ensure longer service life. A mold that lasts longer is, in itself, both an ecological and economic choice for the customer.

From the bolt of a wind turbine to an aircraft landing gear, passing through tractors in the fields: Green Steel is not the future—it is the present of industry. Bonomi Acciai is the partner that brings this technological innovation directly into your production, integrating clear and verifiable CO₂ emissions reporting, ensuring that sustainability goes hand in hand with reliability.