EN 10025 S275 Structural Steel - Detailed Technical Specifications
Standard Classification
Part of the EN 10025 European standard for hot-rolled structural steels
Belongs to non-alloy quality steels (Part 2 of EN 10025)
Replaced former BS 4360 Grade 43 steel
Mechanical Properties
Yield strength (ReH): ≥275 MPa (minimum)
Tensile strength (Rm): 410-560 MPa
Elongation (A₅): ≥22% (depends on thickness)
Impact energy (Charpy V-notch):
S275JR: ≥27J at +20°C
S275J0: ≥27J at 0°C
S275J2: ≥27J at -20°C
Chemical Composition (Maximum %)
Carbon (C): 0.21
Silicon (Si): 0.40
Manganese (Mn): 1.50
Phosphorus (P): 0.035
Sulfur (S): 0.035
Nitrogen (N): 0.012
Production Methods
Hot rolling (standard condition)
Normalizing (N grades)
Controlled rolling (optional)
Quality Certification
EN 10204 3.1 or 3.2 material certificates
Optional supplementary requirements:
Ultrasonic testing
Improved through-thickness properties
Restricted chemical elements
