Product Description: 10HSND / S420N / Q370Q Sheet Steel
10HSND sheet steel (international equivalents S420N and Q370Q) is a low-alloy high-strength structural steel with enhanced weather resistance. It is designed for use in varying climatic conditions and provides reliable performance in demanding structural applications.
General Technical Characteristics
10HSND steel combines high strength, good weldability, and resistance to atmospheric corrosion. It is well suited for structures exposed to outdoor environments and maintains its properties over long service periods.
Key properties:
- high strength
- good weldability
- corrosion resistance
- resistance to atmospheric exposure
Chemical Composition
The composition includes alloying elements that improve performance:
- Carbon (C): up to 0.12%
- Silicon (Si): up to 0.8%
- Manganese (Mn): 1.0–1.6%
- Chromium (Cr), Nickel (Ni), Copper (Cu): in small amounts
- Sulfur (S) and Phosphorus (P): minimal content
Copper, nickel, and chromium enhance corrosion resistance.
Mechanical Properties
10HSND steel typically demonstrates:
- yield strength: approximately 370–420 MPa
- good impact toughness
- resistance to deformation
- reliable performance at low temperatures
Applications
10HSND sheet steel is widely used for:
- bridge structures
- building steel structures
- transport infrastructure
- supports and structural frameworks
It is commonly applied in construction, mechanical engineering, and industrial sectors.
Features
Key advantages include:
- enhanced weather resistance
- long service life
- high strength with relatively low weight
- excellent weldability
Supply Formats and Standards
The steel is supplied in sheet form:
- hot-rolled sheets
- various thicknesses and sizes available
The material complies with:
- GOST 19281-2014
- EN 10025-3 (S420N)
- GB/T 1591 (Q370Q)
10HSND sheet steel is a reliable solution for structures operating in harsh environmental conditions where strength, durability, and corrosion resistance are essential.
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