1. Thickness: 5mm-100mm
2. Length: 3000mm-18800mm or as per requirements
3. Width: 1500mm-4500mm
4. Application: High-strength Steel Plate, pressure vessel plate, boiler steel plate
5. Supplementary Technology: hot rolled, controlled rolling, normalizing, annealed tempering, normalizing+ tempering, hardening + tempering, HIC, SSC, SPWHT, Third Party Test.
6. Surface: Coated or Shot Blasting and Painting.
7. Delivery State: Hot Rolled, Cold Rolled
8. Steel Grades: SB410, SB450, SB450M, SB480, SB480M

The JIS G3103 standard encompasses steel grades SB410, SB450, SB480, SB450M, and SB480M. This standard specifies the use of hot-rolled carbon steel and molybdenum alloy steel plates for boilers and pressure vessels, excluding those designed for room and low-temperature applications.

JIS G3103 steel plates find extensive application in the manufacturing of boilers and pressure vessels, particularly in industries such as petrochemicals and manufacturing. As a proficient supplier of boiler and pressure steel plates, CG Steel provides JIS G3103 steel plates across all grades and dimensions.

JIS G3103 Chemical Composition:

JIS G3103 Steel Grade	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 Mechanical Property

JIS G3103 Steel Grade	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 Equivalent Steel Grade:

JIS G3103 Steel Grade	Europe	Germany	Japan	USA
SB450	P296 GH	A St45, 17Mn4, StE315	SPV 315	A 515 gr.55
SB450M	P296 GH	A St45, 17Mn4, StE315	SPV 315	A 515 gr.55
SB480	P355 GH	A St52, 19Mn8, StE355	SPV 355	A537 CL1
SB480M	P355 GH	A St52, 19Mn8, StE355	SPV 355	A537 CL1
SB410	P235 GH	A St35, HI, StE255	SPV 235	A285 Gr.A/B/C

CG Steel has the capability to provide JIS G3103 steel plates directly from our inventory or source them from well-established steel mills. Additionally, we offer comprehensive steel fabrication services, including cutting (in any size and shape), drilling, welding, milling, and machining, tailored to your specifications. If you are looking to purchase JIS G3103 steel plate products, feel free to reach out to us for the latest pricing. Alternatively, you can refer to the table below for the equivalent steel grades of JIS G3103.