Production Process
From recycled scrap to fully certified component: Björneborg Steel operates a completely integrated production system on a single, secure industrial site. By controlling every phase—melting, open-die forging, specialized heat treatment, and precision machining—we eliminate supply chain risks and guarantee total quality control.
How it works
Our production process
We have performed production and development since 1656 and we have a fully integrated process, transforming recycled scrap into finished world class products, all under our own control.
1
Melt shop
We transform selected recycled scrap into high-purity ingots using an advanced EAF, ladle furnace refining, and vacuum degassing workflow.
2
Forge shop
Our skilled forgemasters utilize open-die free-form forging to eliminate internal porosity and create a dense, high-strength grain structure.
3
Heat treatment
We customize material hardness and mechanical performance using 12 specialized furnaces and oil, water, or polymer quenching assets.
4
Machine shop
Our manufacturing team executes everything from heavy rough turning to complex finish machining within hundredths of a millimeter.
Melt shop
Advanced metallurgical refining in our independent melt shop.
Our process begins in the melt shop, transforming selected recycled scrap into clean steel using our Electric Arc Furnace (EAF). The molten metal is refined in a Ladle Furnace (LF) for precise chemical tuning, then undergoes Vacuum Degassing (VD) to remove harmful gases and guarantee internal purity. Finally, the clean steel is bottom-cast into high-quality ingots, providing a flawless starting material for demanding marine, energy, and defense applications.
Forge shop
Transforming cast structures into high-strength forged steel.
In the forge shop, our experienced forgemasters shape the heated ingots using a powerful open-die press. This intense mechanical working closes internal porosities and breaks down the raw cast structure, replacing it with a continuous, homogenous grain flow. By aligning the steel’s internal matrix with the final shape, we maximize yield strength, impact toughness, and fatigue resistance while forging close to final dimensions to minimize material waste.
Heat treatment
Precision heat treatment for exact material properties.
Our heat treatment facility features 12 electric and gas-fired furnaces of various sizes to ensure maximum energy efficiency. By applying customized heating, soaking, and cooling cycles, our experts alter the steel’s atomic lattice to unlock the exact combinations of hardness, yield strength, and impact toughness required. When required, hardening and quenching in water, oil, or polymers guarantees compliance with strict naval and international OEM standards.
Machine shop
Heavy rough machining to delicate finishing.
Our integrated machining halls turn massive raw forgings into complex, ready-to-install components. By keeping the machine shop on the same site as our forge and melt shop, we dramatically reduce logistical lead times and ensure flawless quality control. We handle the full cutting spectrum—from high-rate rough machining to delicate finishing down to hundredths of a millimeter—delivering flawless dimensional accuracy on everything from 24-meter propulsion shafts to heavy artillery components.
Optimize your industrial supply chain.
By choosing Björneborg Steel, you partner with a manufacturer that controls 100% of the production chain on a single site. We eliminate structural vulnerabilities, secure your project data, and minimize your environmental footprint. Contact our sales managers today to discuss your material requirements and secure fully certified components built for the future.