JIS G3131 SPHC Steel Sheet Coil

JIS G3131 SPHC (Hot-Rolled Steel Sheets and Coils) is a Japanese standard that specifies the standards for hot-rolled steel sheets and coils with a specified chemical composition and certain mechanical properties. SPHC steel is often used in various applications, including forming, stamping, and general structural applications.

Cold Rolled Steel Sheet Coil
Cold Rolled Steel Sheet Coil

Here are some key points regarding JIS G3131 SPHC:

Chemical Composition

The chemical composition of SPHC steel typically includes elements such as carbon, manganese, and sometimes other alloying elements. The exact composition is specified in the JIS G3131 standard to ensure consistency and performance.

Mechanical Properties

SPHC steel should meet specific mechanical properties, including tensile strength, elongation, and thickness. These properties are important for determining the suitability of the material for various applications.

Hot-Rolled Process

SPHC steel is produced through a hot-rolling process, where the steel slab is heated above its recrystallization temperature and then passed through a series of rollers to achieve the desired thickness. This process imparts certain mechanical and structural properties to the steel.


JIS G3131 SPHC steel sheets and coils are commonly used in applications where forming and stamping are required, such as in the manufacturing of automotive components, pipes, and various structural parts. The hot-rolled nature of SPHC steel makes it suitable for shaping and fabrication.

Surface Finish

SPHC steel sheets and coils may have various surface finishes, depending on customer requirements. Common finishes include pickled and oiled, as well as mill scale.

Standards and Certification

SPHC conforms to the Japanese Industrial Standard (JIS) G3131. When procuring SPHC steel, it’s essential to ensure compliance with the specified JIS standard to guarantee the material’s quality and suitability for the intended application.

Equivalent Grades

Depending on the specific requirements, SPHC may have equivalent grades in other standards, such as ASTM or DIN. Equivalent grades ensure that the material meets similar specifications across different international standards.

When working with JIS G3131 SPHC steel sheets and coils, it is crucial to adhere to the recommended processing and handling guidelines to maintain the material’s integrity and performance. Additionally, users should consult the relevant standards and specifications to ensure proper application and compatibility with their specific needs.

Albert Turner

Albert Turner is an experienced steel content writer with over 5 years of experience creating content related to the steel industry. Albert has solid professional knowledge of steel and can explain all aspects of steel production, processing, application and other aspects in a simple and easy-to-understand manner. He is familiar with various steel standards and specifications and can tailor content to the needs of his target audience.