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What is JIS G3101 SS400 chemical composition

JIS G3101 SS400 steel is one of the most commonly used hot rolled general structural steel. JIS G3101 SS400 steel is usually supplied as SS400 steel plates, sheets, flats, bars, sections, etc.. No matter what form it is, JIS G3101 SS400 chemical composition will not change.

JIS G3101 SS400 chemical composition:

Grade C Mn P S
SS400 ~ ~ 0.050 0.050

As per JIS G3101 specification, for JIS G3101 SS400 chemical composition, the Carbon (C), Silicon (Si) and Manganese (Mn) content are not controlled. Phosphorus (P) 0.050% Max and Sulphur (S) 0.050% Max have to be controlled.

JIS G3101 SS400 chemical composition is close to that of A36 steel, A283C steel, ST37-2 steel, Q235B steel, S235JR steel. Those steel grades are also known as equivalent grades to each other.

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