1. EN 10025-2: Non-Alloy Structural Steels
| EN 10025-2 Grade | Closest International Equivalents | Key Matching Parameters |
|---|---|---|
| S235JR (1.0038) | ASTM A36, JIS G3101 SS400 | Yield strength (235 MPa min), general purpose use |
| S275JR (1.0044) | ASTM A573 Gr. 58, JIS G3101 SM490 | Yield strength (275 MPa min), improved impact resistance |
| S355JR (1.0045) | ASTM A572 Gr. 50, JIS G3106 SM570 | Yield strength (355 MPa min), widely used in co |
2. EN 10025-3: Normalized/Normalized-Rolled Weldable Fine-Grain Steels
| EN 10025-3 Grade | Closest International Equivalents | Key Matching Parameters |
|---|---|---|
| S275NL (1.8910) | ASTM A633 Gr. C, JIS G3126 SPA-H | Normalized, low-temperature toughness (-50°C impact) |
| S355NL (1.0546) | ASTM A678 Gr. A, API 5L X52 | High strength with fine grain structure |
Key Considerations for Equivalency
Regional Standards Variation:
ASTM (USA) focuses on chemistry ranges, while EN (Europe) emphasizes mechanical properties.
JIS (Japan) grades may differ in impact test requirements (e.g., JIS G3101 vs. EN Charpy V-notch).
Critical Application Factors:
For pressure vessels, EN 10025-3 S355NL ≈ ASTM A516 Gr. 60.
For bridges, EN 10025-4 S355ML ≈ ASTM A709 Gr. 50.
Certification Requirements:
EN 10204 3.1/3.2 material certificates align with ASTM A6/A20 mill test reports.
For project-specific equivalency validation, always consult:
Cross-standard comparison tables (e.g., ASME II-D, Eurocode 3)
Third-party testing (chemical analysis, mechanical tests)
