Ballistic and blast protection steel

PROTAC protection steel delivers an optimal combination of strength, hardness and impact toughness, making it suitable for vehicles and structures that require exceptional penetration resistance and shock absorption. The steel maintains high performance even at low operating temperatures while offering good weldability and fabrication characteristics.

Selected grades meet relevant ballistic standards, supporting the development of protective solutions for demanding operating conditions.

Key customer benefits

• High resistance to penetration and impact

• High strength and hardness combined with impact toughness

• Reliable performance at low operating temperatures

• Suitable properties for cutting, forming, welding and fabrication

• European production, testing and technical support

Typical applications

• Armoured and tactical vehicles

• Ballistic and blast protection structures

• Protective containers and enclosures

• Critical infrastructure protection

• Military and dual-use infrastructure

From steel plates to protective solutions

SIJ Acroni works with specialised processing partners to extend its steel offering beyond plates to prefabricated components and protection systems.

Solutions include cut-to-size, machined, formed and welded components, as well as protective structures for vehicles, buildings and critical infrastructure.

Typical applications:

• Prefabricated ballistic and blast protection components

• Protective building elements and façade systems

• Modular and container-based protection

• Protection systems for critical infrastructure

Specialised steel solutions for defence

Beyond standard ballistic protection grades, SIJ Acroni can support specialised requirements through selected materials and production capabilities.

Rolled homogeneous armour (RHA)

Steel for armour applications requiring specific combinations of hardness, strength and toughness.

Testing plates for military warheads

Specialised steel plates for testing applications involving military warheads, according to project requirements.

Electroslag remelting (ESR)

Selected PROTAC ballistic, blast and RHA grades can be produced using electroslag remelting. This process improves steel cleanliness and structural homogeneity, reduces non-metallic inclusions, and supports consistent mechanical properties.

Deep-drawing steel

Deep-drawing steel for ammunition shell production, supporting forming processes and component manufacturing. Waterjet cutting capabilities can also support the preparation of steel blanks and specialised components, depending on project requirements.

Electrical steel for drones and compact motors

SIWATT non-oriented electrical steel is suitable for electric motor applications where magnetic performance, efficiency and compact design matter. These properties are relevant to developing motors for drones and other defence-related electric mobility applications.