EN 10025-3 is a European standard that specifies the technical delivery conditions for hot-rolled structural steel products made from high-strength low-alloy (HSLA) steels. The S460N grade is one of the normalized/normalized rolled weldable fine-grain structural steels covered under this standard.

Standard and Grade Designation

Grade: S460N

"S" stands for structural steel.

"460" indicates the minimum yield strength (460 MPa at thickness ≤16 mm).

"N" means the steel is supplied in the normalized/normalized rolled condition.

Heat Treatment:

Normalized/Normalized rolled to ensure fine grain structure and improved toughness.

Key Features:

1.High Strength: It exhibits high yield strength and tensile strength, capable of bearing substantial loads and performing excellently in various load-bearing structures.

2.Good Toughness: It not only offers excellent impact toughness, effectively resisting impact loads, but also maintains good low-temperature toughness. It ensures stable performance in harsh environments, reducing the risk of brittle fracture.

3.Excellent Weldability: Suitable for various common welding methods such as manual arc welding, submerged arc welding, and gas-shielded welding. The welded joints exhibit superior performance, meeting requirements in strength, toughness, crack resistance, and other aspects.

4.Good Machinability: Easy to cut, bend, and shape, allowing convenient processing into components of various forms and sizes to meet diverse engineering needs.

5.Corrosion Resistance: With appropriate surface treatments such as sandblasting or galvanizing, it offers excellent corrosion resistance, making it suitable for various environments and applications.

1.Architectural Structures: Widely used in components such as columns, beams, and floor slabs of high-rise buildings, industrial plants, stadiums, etc., as well as load-bearing structures like main beams, crossbeams, and piers of bridges. It enhances the load-bearing capacity and seismic performance of structures.

2.Shipbuilding: Suitable for manufacturing ship hulls, decks, bulkheads, and other components. Its excellent weldability and corrosion resistance help improve the quality and service life of vessels.

3.Automotive Manufacturing: Applied in automotive bodies, chassis, suspension systems, and other structures, contributing to enhanced rigidity and durability of vehicles.

4.Petrochemical Industry: Ideal for storage tanks, reactors, and other equipment in the petrochemical sector. Its high strength and good toughness ensure safe operation under complex working conditions.

5.Mining and Construction Machinery: Used in the fabrication of large welded structural components, meeting the requirements for high strength and toughness in these machines.

6.Corrosion Resistance: With appropriate surface treatments such as sandblasting or galvanizing, it exhibits excellent corrosion resistance, making it suitable for various environments and applications.

Welding & Fabrication:

Weldable with standard methods (SMAW, GMAW, SAW)

Preheating may be required for thick sections to avoid cracking.

Suitable for high-stress welded structures due to good toughness.

Comparison with Other Grades:

S460NL (Low-temperature toughness, tested at -50°C)

S460M (Thermomechanically rolled, higher strength with similar composition)