S1100 High Strength Structural Steel
S1100 is an ultra high strength structural steel engineered for applications where extreme load capacity, durability, and weight reduction are critical. With a minimum yield strength of 1100 MPa (159,500 psi), it delivers outstanding strength-to-weight performance—allowing engineers and manufacturers to design lighter, more efficient components without compromising safety or reliability. Available in coil, sheet, strip, and plate form, S1100 offers exceptional mechanical consistency, formability for its strength class, and weldability that supports demanding fabrication environments.
Grades Designations
S1100 is supplied in accordance with EN 10149-2, the European standard for hot-rolled, high yield strength steels for cold forming. The steel is microalloyed with elements such as niobium, titanium, and vanadium to refine grain size, improve toughness, and ensure high yield strength with consistent formability. Its low carbon content supports excellent weldability and dimensional stability even under high forming or stress conditions.
S1100 Characteristics
Property
specification
Weldability
Despite its high yield strength, S1100 maintains good weldability with standard techniques.
Thermal Cutting
The steel performs well with laser, plasma, and oxy-fuel cutting.
Bendability
S1100 exhibits controlled bendability when correct tooling and radii are used. Proper setup allows for precise forming without cracking.
Ease of Fabrication
S1100 can be cold formed, cut, and fabricated using modern processing methods.
S1100 is used in advanced engineering and heavy equipment applications where lightweight strength translates directly to performance and efficiency, including:
- Truck chassis and trailer fabrication
- Crane and lifting equipment
- High-performance structural components
- Mining and material handling machinery
- Energy and infrastructure systems
