SG325 Steel Coil: Perfect Fusion of Corrosion Resistance and High Toughness

JIS G 3116 SG325 steel coil is a high-performance, low-alloy steel engineered for gas cylinder manufacturing, offering an exceptional blend of corrosion resistance and high toughness. Designed to meet the Japanese Industrial Standard (JIS G 3116), SG325 is ideal for welded cylinders storing high-pressure gases like propane, butane, and LPG, serving industries such as energy, chemical processing, and transportation.

The alloy’s chemical composition, with low carbon (≤0.20%), manganese (≤1.50%), and controlled phosphorus (≤0.040%), ensures superior toughness and resistance to brittle fracture, critical for safe operation under pressure. SG325’s corrosion resistance is enhanced by its balanced metallurgy, protecting against degradation in harsh environments, including exposure to moisture and chemicals. This durability extends the lifespan of gas cylinders, reducing maintenance costs.

With a minimum yield strength of 325 MPa and tensile strength of 490–620 MPa, SG325 delivers robust structural integrity. Its excellent weldability supports fabrication processes like gas metal arc welding (GMAW), ensuring strong, leak-proof seams. The steel’s formability allows precise shaping, accommodating complex cylinder designs. Available as hot-rolled coils in thicknesses of 1.6–6 mm and widths up to 2000 mm, SG325 can be customized with surface treatments like pickling for added protection.

Certified to JIS G 3116, SG325 combines corrosion resistance and toughness, making it a reliable, cost-effective choice for safe and durable gas cylinders. Its outstanding properties ensure performance in demanding applications, meeting the needs of manufacturers worldwide.