Introduction to Low Alloy & High Strength Steel Plate St 52-3

Overview

St 52-3 is a low alloy high-strength structural steel plate defined by DIN EN 10025-2 (European standard), widely used in engineering and construction for its balanced mechanical properties. The designation "St 52-3" translates to:

 

St: Stahl (German for "steel").

52: Minimum yield strength of 5200 kgf/cm² (approximately 510 MPa in modern SI units, though the standard specifies a minimum yield strength of 355 MPa for thicknesses ≤16 mm).

-3: Indicates impact resistance at +20°C (toughness class).

 

This steel is characterized by low carbon content and alloy additions (e.g., manganese, silicon) to enhance strength, ductility, and weldability, making it suitable for heavy-duty applications.

 

 Mechanical Properties

Property	Typical Values for Thickness ≤16 mm	Test Conditions
Yield Strength (ReH)	≥355 MPa	Tensile test
Tensile Strength (Rm)	490–630 MPa	Tensile test
Elongation (A80)	≥22%	Standard gauge length
Impact Toughness (KV2)	≥27 J at +20°C	Charpy V-notch test (longitudinal)

 

Note: Properties may vary with thickness (e.g., yield strength decreases for thicker plates; e.g., ≤305 MPa for thickness >100 mm).

 

 Standards Compliance and Certification

CE Certification: Complies with EN 10025-2 for use in European Union structural projects.

Third-Party Testing: Often requires mill test certificates (MTC) and non-destructive testing (NDT) for critical applications.

Price Considerations

Market Range:

Approx. USD 600–900 per ton (2023–2024, subject to fluctuations in raw material costs, thickness, and supplier).

Price Drivers:

Thickness (thicker plates are costlier).

Processing (normalized, thermomechanically rolled).

Order volume and geographic location (e.g., Europe vs. Asia).

 

 

 

 

 

 

 

 

 

 

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