JIS G3103 carbon steel and molybdenum alloy steel plates for boilers and pressure vessels

JIS G3103 carbon steel and molybdenum alloy steel plates for boilers and pressure vessels

JIS G3103 specifies carbon steel and molybdenum alloy steel plates to be used for boilers and pressure vessels, excepting those to be used at room and low temperatures. JIS G3103 standard includes steel grades: SB410, SB450, SB480, SB450M and SB480M.

JIS G3103 steel plates chemical composition:

JIS G3103 C Si Mn P S Mo
SB410 0.24-0.30% 0.15-0.40% 0.90% 0.030% 0.030% -
SB450 0.33% 0.45% 0.98% 0.020% 0.020%  
SB480 0.35% 0.45% 1.3% 0.020% 0.020%  
SB450M 0.25% 0.45% 0.98% 0.020% 0.020%  
SB480M 0.27 0.45 0.98 0.020 0.020  

JIS G3103 steel plates mechanical property:

JIS G3103 Mechanical Property
Tensile Strength(MPa) Yield Strength(MPa) Min % Elongation in 2 in.(50mm) min Impacting Test Temperature(°C) Min
SB410 410-550 225 21 0,-10,-20
SB450M 450-590 255 19 0,-10,-20
SB450 450-590 245 19 0,-10,-20
SB480 480-620 265 17 0,-10,-20
SB480M 480-620 275 17 0,-10,-20

JIS G3103 steel equivalent grades:

JIS G3103 Europe Germany Japan USA
SB450 P295GH A St45, 17Mn4, StE315 SPV 315 A515 gr.55
SB450M P295GH A St45, 17Mn4, StE315 SPV 315 A515 gr.55
SB480 P355GH A St52, 19Mn8, StE355 SPV 355 A537 CL1
SB480M P355GH A St52, 19Mn8, StE355 SPV 355 A537 CL1
SB410 P235GH A St35, HI, StE255 SPV 235 A285 Gr.A/B/C

BBN steel is an experienced boiler and pressure steel plates supplier who can offer you JIS G3103 steel plates of all grades and dimension range. JIS G3103 steel plates are widely used in the fabrication of boilers and pressure vessels in industries such as petrochemical and manufacturing.

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