Introduction JIS G 3103 specifies hot-rolled steel plates of carbon steel and molybdenum alloy steel for boilers and pressure vessels. The standard covers five grades: SB410, SB450, SB480, SB450M and SB480M. JIS G 3103 steel plates are designed for boiler, pressure vessel and high-temperature service applications, offering suitable strength and performance under elevated-temperature conditions. Ladhani Metal Corporation is a manufacturer, supplier, and exporter of JIS G 3103 steel plates, supplying the required grades, thicknesses, dimensions, surface finishes and delivery conditions as per customer requirements. Available Grades SB410 | SB450 | SB480 | SB450M | SB480M Forms of Supply Steel Plates | Hot Rolled Plates | Boiler Plates | Pressure Vessel Plates | Cut-to-Length Plates Material Type Carbon Steel | Molybdenum Alloy Steel | Boiler & Pressure Vessel Steel Chemical Composition SB480: C 0.40% max. | Si 0.30% max. | Mn 1.30% max. | P 0.030% max. | S 0.030% max. | Mo 0.12% max. Mechanical Properties SB410: Yield strength 225 MPa min. | Tensile strength 410–550 MPa SB450: Yield strength 245 MPa min. | Tensile strength 450–590 MPa SB480: Yield strength 265 MPa min. | Tensile strength 480–620 MPa SB450M: Yield strength 255 MPa min. | Tensile strength 450–590 MPa SB480M: Yield strength 275 MPa min. | Tensile strength 480–620 MPa Surface Finish Hot Rolled | Mill Finish | Descaled | Pickled | Oiled | Cut Edge | Mill Edge Delivery Condition As Rolled | Normalized | Stress Relief Annealed | Heat Treated as Required | Cut-to-Length Key Features • Suitable for boilers and pressure vessels • Available in carbon steel and molybdenum alloy steel grades • Good strength for pressure-containing applications • Suitable for elevated-temperature service • Good weldability and fabrication characteristics • Available in different thicknesses and dimensions • Supplied with required inspection and mill test certificates Applications • Boilers and boiler components • Pressure vessels • Steam drums • Heat exchangers • Industrial heating equipment • Power generation equipment • High-temperature process equipment • Chemical processing equipment • Petrochemical equipment • Fabricated pressure-containing structures Conclusion JIS G 3103 SB410, SB450, SB480, SB450M and SB480M steel plates provide reliable carbon steel and molybdenum alloy steel solutions for boiler and pressure vessel applications. To place an order or make an enquiry for JIS G 3103 steel plates, contact Ladhani Metal Corporation for your required grade, thickness, width, length, surface finish, delivery condition and quantity.