S275JR Structural Steel (EN 10025-2) — European Standard for General Construction
EN 10025-2 · Published: 2026-06-11 · Updated: 2026-06-12
S275JR is the baseline structural steel in the European EN 10025-2 standard, directly equivalent to ASTM A36 in US practice. Yield strength of 275 MPa at ambient temperature, with Charpy impact testing at +20°C (JR designation). Used for welded,...
S275JR is the baseline structural steel in the European EN 10025-2 standard, directly equivalent to ASTM A36 in US practice. Yield strength of 275 MPa at ambient temperature, with Charpy impact testing at +20°C (JR designation). Used for welded, bolted, and riveted structures in general construction, bridges, and industrial buildings. The JR suffix indicates 27J minimum impact energy at 20°C — a critical distinction from J0 (0°C) and J2 (-20°C) subgrades for low-temperature applications.
Quick Facts
| Category | |
| Standard | EN 10025-2 |
| Density | 7.85 g/cm³ |
| Yield Strength | 275 MPa |
| Tensile Strength | 410-560 MPa |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| ASTM A36 | Compare |
| JIS SS400 | Compare |
| GB Q235B | Compare |
| DIN St44-2 | Compare |
Related Materials
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Frequently Asked Questions
What is the ASTM equivalent of S275JR?
ASTM A36 is the closest US equivalent, with similar yield strength (250 MPa for A36 vs 275 MPa for S275JR). S275JR has marginally higher minimum yield and tighter composition controls. For structural applications, the two are generally interchangeable, though project specifications may require EN 10025-certified material for CE marking compliance in European construction.
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu