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An Overview of SS400 Structural Steel

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.

SS400 Equivalents:

Equivalents for JIS SS400
DIN 17100 St 44-2
ASTM Equivalents for JIS SS400
ASTM A36, ASTM A283 Grade D
EN Equivalents for JIS SS400
EN S275/ BS 43A

SS400 steel Chemical Composition:
As per JIS G 3101, Carbon (C), Silicon (Si) and Manganese (Mn) content are not controlled. Phosphorus (P) 0.05% Max and Sulphur (S) 0.05% Max have to controlled below these levels.
Melting Point

SS400 steel Mechanical Properties:

Density (kg/m3) 7860 Young's Modulus (GPa) 190-210 Tensile Strength (MPa) 400 – 510 MPa Yield Strength (MPa) 205-245 MPa Poisson's ratio 0.26

SS400 steel Hardness:
Brinell Hardness (HB) 160

Melting point of SS400 is 1430 Degree Celsius



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