Choosing the correct steel grade is critical for structural performance, cost control, and compliance. For UK and international buyers, S275, S355, and S460 are among the most commonly specified structural steel grades — yet they are often misunderstood or incorrectly substituted. In this guide, we explain the key differences, real-world use cases, and how to choose the right steel grade for your project in 2026. What Do Steel Grades Mean? Steel grades such as S275, S355, and S460 are defined under EN 10025, the European standard for structural steel. “S” = Structural steel Number = Minimum [...]