Tianjin Brisk Metalwork Co.,Ltd is one of the manufacturers of JIS G 3101 SS400 HOLLOW STRUCTURAL SECTION in China. Our products are mainly exported to the Middle East, Southeast Asia, Europe, New Zealand, and other regions.If you would like to learn more about our products, feel free to contact us and send your purchase list.
PRODUCTION




Chemical Composition
| Element | Product Analysis % | Remark |
| C | ≤0.25 | Ensure weldability |
| Mn | ≤1.40 | Enhance strength and toughness |
| Si | ≤0.35 | Auxiliary reinforcement, deoxygenation |
| P | ≤0.050 | Harmful impurities, control cold brittleness |
| S | ≤0.050 | Harmful impurities, control thermal brittleness |
| Cu | - | Improve corrosion resistance (add as needed) |
- Other alloying elements can be added as required.
Mechanical Properties
| Grade | Yield point or proof strength N/mm² (MPa) |
Tensile strength N/mm² (MPa) |
|||
| Thickness mm | |||||
| ≤16 | >16 ≤40 | >46 ≤100 | >100 | ||
| SS400 | ≥245 | ≥235 | ≥215 | ≥205 | 400 – 510 |
Typical Application Areas

- Building Structures: Factory buildings / building beams and columns, floor slabs, supports, trusses, enclosure structures
- Bridge Engineering: Main beams, cross beams, bridge decks, railings of medium and small-span bridges
- Mechanical Manufacturing: Light equipment frames, bases, brackets, gears, connecting rods, agricultural / mining machinery structural parts
- Automotive Industry: Chassis, frames, body reinforcements, vehicle compartment structures
- Shipbuilding and Offshore: Non-critical ship structures, compartments, decks, outfitting parts
Core Compare
| Equivalent | SS400(JIS) | Q235B(GB) | S235JR(EN) | A36(ASTM) |
| C Max % | 0.25% | 0.20% | 0.17% | 0.26% |
| Mn Max % | 1.40% | 1.40% | 1.40% | 0.80–1.20% |
| P/S Max % | 0.050% | 0.045% | 0.045% | P≤0.040% / S≤0.050% |
|
Yield strength Mpa |
245MPa(t≤16) | 235MPa | 235MPa | 250MPa |
| Tensile strength Mpa | 400–510MPa | 375–460MPa | 360–510MPa | 400–550MPa |
| Elongation % | ≥21% | ≥26% | ≥26% | ≥20% |
| Impact KV | ≥27J | ≥27J | ≥27J | ≥20J |
| Difference | High lower limit of tensile strength Wide upper limit of Mn |
Slightly better plasticity Low cost |
Lower carbon Slightly better weldability |
Slightly higher yield Slightly better corrosion resistance |
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