Related products : SS330 steel , S35C steel , S20C steel


SS400 is a marked way Japanese steel material, equivalent to the domestic steel Q235 number. Foreign standard structural steel often classified according to the tensile strength, such as SS400 (Japan so labeled), which means that the minimum value of 400 σb for 400MPa ultra high strength steel is steel σb ≥1373 Mpa

SS400 steel sheet chemical composition

Chemical elements

C≤ 16mm max

C>16mm max


Mn max

P max.

S max.

%,by mass







SS400 steel plate/sheet Physical properties


Yield StrengthReH[N/mm2] transv.min.


Fracture Elongation[%]transv. min.

Notch Impact Energy1)Ch Vcomplete samplelongitud. min [J]

t≤ 16mm t >16mm

235 225



20 degree 27J

t < 3mm t ≥ 3mm


360-510 340-470


Up to 1.5mm 1.51-2.00mm 2.01-2.50mm 2.51-2.99mm ≥ 3mm



16 17 18 19 24

SS400 steel application
JIS G 3101 SS400 is one of the most commonly used hot rolled general structural steel. Supplied as plates, sheets, flats, bars, sections etc. They are cheap, excelling in weldability & machinability.

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