This standard specifies the requirements for hot-rolled structural steel plates, sections, and bars. It defines critical chemical compositions, carbon equivalents, and mechanical properties such as yield stress and tensile strength for various structural steel grades including E250 and E350.
Earlier specification for hot rolled medium and high tensile structural steel plates, sections, and bars for general structural purposes.
Quick Reference Values
Yield stress for E250 (thickness < 20mm)250 MPa
Tensile strength for E250410 MPa
Minimum percentage elongation for E25023%
Max Carbon content for E250 Grade A0.23%
Max Carbon Equivalent (CE) for E2500.42
Key Formulas
CE = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15 — Carbon Equivalent Formula
Practical Notes
Grade A (e.g., E250A) is suitable for general static loads, while Grade B (E250B) requires Charpy impact testing and is meant for structures subject to dynamic loading.
Yield stress decreases as the thickness of the steel section or plate increases; always refer to Table 2 based on the actual material thickness.
Ensure Carbon Equivalent (CE) is calculated and within limits to ensure weldability and prevent cold cracking.