SB450M,SB450M PLATE,SB450M STEEL,JIS G3103 Steel Plate,JIS G3103 SB450M|SB450M|SB 450M STEEL PLATEJIS G3103 specifies the hot rolled steel plates of carbon steel and molybdenum alloy steel to be used for boilers and pressure vessels, excepting those to be used at room and cold temperatures. This standard covers steel SB410, SB450, SB480, SB450M and SB480M.These plates are widely used in the fabrication of boilers and pressure vessels in industries such as petrochemical and manufacturing.



Thickness: 6MM to 300MM,

Width: 1500mm to 4050mm,

Length: 3000mm to 15000mm
Gnee steel is specialized in supplying JIS G3103 steel plate in SB450M. For more information of grade SB450M steel plates, please check them in following:

SB450MChemical Composition
Grade The Element Max (%)
C Si Mn P S Mo
SB450M 0.18-0.21  

0.15 -0.40

0.90 0.030 0.030 0.45-0.60

Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%

Grade SB450MMechanical Property
Thickness Yield Tensile Elongation
SB450M mm Min Mpa Mpa Min  %
t≦25 255 450-590 19
25<t≦50 255 450-590 23


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