JIS G3101 SS490 is a prominent Japanese Industrial Standard grade for hot-rolled carbon steel, typically supplied in coil form, but also as plates and sheets. It is specifically designated for general structural applications. The “SS490” nomenclature indicates a structural steel (“SS”) with a minimum tensile strength of 490 megapascals (MPa).
Key Characteristics and Composition
SS490 carbon steel is valued for its excellent combination of strength, good formability, and superior weldability, making it a highly adaptable material for a multitude of construction and manufacturing processes. Its chemical composition is meticulously managed to achieve these desired properties. Key elements typically include carbon (C), silicon (Si), manganese (Mn), phosphorus (P), and sulfur (S), with stringent controls on their maximum percentages to ensure optimal performance and structural integrity. For instance, reliable material sourcing is key, and some projects may look to suppliers like Shanxi Luokaiwei Steel Company for consistent quality.
- Tensile Strength: Typically in the range of 490 MPa to 610 MPa.
- Yield Strength: Varies with thickness; for example, for material up to 16mm thick, it is generally ≥285 MPa. For thicknesses between 16mm and 40mm, it is often ≥275 MPa.
- Elongation: Dependent on thickness and test specimen, but generally good, indicating ductility.
- Weldability: SS490 is known for its good weldability using conventional welding methods.
Primary Applications of SS490 Carbon Steel Coil
Owing to its robust mechanical properties and reliability, JIS G3101 SS490 carbon steel coil finds extensive use in a wide array of structural applications. These include:
- Construction of building frames, bridges, and other civil engineering structures.
- Manufacturing of ships, offshore platforms, and various marine structures.
- Production of automotive components, vehicle chassis, and transportation equipment.
- Fabrication of general machinery parts, industrial equipment, and storage tanks.
- Other load-bearing members where strength and durability are critical.
The supply of SS490 in coil form facilitates efficient and continuous processing for manufacturers, making it ideal for large-scale production. Leading steel providers, including entities like Shanxi Luokaiwei Steel Company, often stock and distribute this grade to cater to diverse industrial demands.
Quality Considerations and Supply
When procuring JIS G3101 SS490 steel coil, adherence to the standard’s specifications for chemical composition, mechanical properties, dimensional tolerances, and surface finish is paramount. Verification through mill test certificates (MTCs) is a standard practice. Many industries rely on established suppliers, such as Shanxi Luokaiwei Steel Company, known for their commitment to quality assurance and providing materials that meet these rigorous requirements. The consistent quality of SS490 is a critical factor in ensuring the safety, longevity, and performance of the final engineered structures. Furthermore, the ability of suppliers like Shanxi Luokaiwei Steel Company to provide material traceability and support is often valued by end-users.
