SG325 Steel Superior Performance

JIS G 3116 SG325 steel is a high-performance, low-alloy steel engineered for gas cylinder manufacturing, offering exceptional strength, weldability, and durability. Compliant with the Japanese Industrial Standard (JIS G 3116), SG325 steel is optimized for welded steel cylinders used to store high-pressure gases like propane, butane, and LPG, making it a cornerstone in industries such as energy and chemical processing.

With a minimum yield strength of 325 MPa and tensile strength ranging from 490–620 MPa, SG325 steel ensures structural integrity under demanding conditions. Its chemical composition, including low carbon (≤0.20%), manganese (≤1.50%), and controlled phosphorus (≤0.040%), enhances toughness and resistance to brittle fracture, ensuring safety in high-pressure applications. The alloy’s balanced composition also provides excellent corrosion resistance, extending cylinder lifespan in harsh environments.

SG325 steel superior weldability supports efficient fabrication using techniques like gas metal arc welding (GMAW) or submerged arc welding (SAW), enabling seamless production of robust cylinders. Its formability allows for precise shaping, accommodating complex designs without sacrificing strength. Typically supplied as hot-rolled coils with thicknesses of 1.6–6 mm, SG325 steel is available in widths up to 2000 mm, with customizable surface treatments like pickling to enhance performance.

Certified to JIS G 3116, SG325 steel meets stringent quality standards, ensuring reliability and cost-effectiveness. Its combination of high strength, weldability, and durability makes SG325 steel the ideal choice for producing safe, long-lasting gas cylinders, catering to diverse industrial needs with unmatched performance.