SS400 Hollow Section VS S355JR Hollow Section
S355JR is a hot-rolled, weldable, fine-grained structural steel defined in European standard EN 10025-2. Its minimum yield strength is 355 MPa, and "JR" indicates that the material has an impact absorption energy of not less than 34 J at room temperature. Its chemical composition mainly includes carbon, manganese, and silicon, with a carbon content not exceeding 0.21%. Mechanical properties include tensile strength between 470-630 MPa and elongation typically not less than 21%. This material is widely used in building structures, bridges, vehicles, and machinery manufacturing, and possesses good processing and welding properties.
SS400 structural pipe is a Japanese standard carbon structural steel with a tensile strength reaching 400 MPa. Due to its moderate carbon content, it has good overall performance, with a good balance of strength, plasticity, and weldability, making it the most widely used. SS400 steel plate itself possesses a comprehensive range of excellent properties, including high strength, high toughness, fatigue resistance, impact resistance, wear resistance, corrosion resistance, weldability, and ease of processing.
Chemical Composition between SS400 and S355JR
| SS400 (Japanese Standard JIS G3101) | S355JR (European Standard EN 10025-2) | |
|---|---|---|
| | <=0.17% | <=0.22% |
| | <=0.35% | 0.10% - 0.55% |
| | <=1.40% | 1.00% - 1.60% |
| | <=0.050% | <=0.045% |
| | <=0.050% | <=0.045% |
| |
Mechanical Properties Comparison Table between SS400 and S355JR
| SS400 (Japanese Standard JIS G3101) | S355JR (European Standard EN 10025-2) | |
|---|---|---|
| | >=245 (thickness <=16mm) | 355 (thickness <=16mm) |
| | 400 - 510 | 470 - 630 |
| | >=21 (longitudinal) | >=22 (longitudinal, thickness <=40mm) |
| | Requires Charpy V-notch impact test at 20℃ (minimum energy values apply) | |
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SS400 structural tube and S355JR Structural Tube factory
