JIS G3101 SS400 steel plate/sheet, under JISG3101 standard, we can regard SS400 steel plate/sheet for general purpose structural steel.
JIS G3101 SS400 steel plate/sheet for carbon steels, this kind of steel has very wide use. Because of the low Carbon content and without alloy element, carbon structural steel has the proper tensile strength, good toughness, plasticity, processability.
The structural quality hot rolled SS400 steel is more reliable in its tensile strength than SS330 steel. Dimensional Characteristics of SS400 Steels: the applicable thickness for this SS400 material as defined in the JIS 3101 starts from 6 mm to 120 mm.
The Chemical Composition of SS400 Steels as under:
| Grade | Fe | Si | C | S | P | |
| SS400 | min. | 99.25 | – | – | – | – |
| max. | 100 | 0.4 | 0.26 | 0.050 | 0.040 | |
JIS G3101 SS400 steel Mechanical Properties:
SS400 steel is a structural hot Rolled steel in the fo
| Grade | Yield Strength | Tensile Strength | Elongation min. % | |||
| Thickness | Thickness | Thickness | Thickness | Thickness | ||
| <5mm | 5-16mm | ≥16mm | ||||
| SS400 | 245 | 235 | 400-510 | 21 | 17 | 21 |
rm of plates, sheets & strips for general structural applications. SS400 is a material grade and designation defined in JIS G 3101 standard. JIS G 3101 is a Japanese material standard for hot Rolled steel plates, sheets, strips for general structural usage.
JIS G3101 SS400 is a technical delivery conditions for general purpose structural steel, and a type of steel sheet under JIS standard which is used to build ship, bridge, belongs to high strength sheet.

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