JIS G3131 SPHD Steel Sheet Coil

JIS G3131 SPHD (Hot-Rolled Steel Sheets and Coils) is another Japanese standard that specifies the standards for hot-rolled steel sheets and coils with specific chemical composition and mechanical properties. SPHD is similar to SPHC but has slightly different chemical composition requirements. Here are some key features of JIS G3131 SPHD:

Chemical Composition

SPHD steel has a specified chemical composition, including elements such as carbon, manganese, and other alloying elements. The exact composition is defined in the JIS G3131 standard.

Mechanical Properties

SPHD steel should meet specific mechanical properties, including tensile strength, elongation, and thickness. These properties ensure that the material is suitable for its intended applications, such as forming and bending.

Hot-Rolled Process

SPHD steel is produced through a hot-rolling process similar to SPHC. The steel slab is heated above its recrystallization temperature and then passed through a series of rollers to achieve the desired thickness.


JIS G3131 SPHD steel sheets and coils are commonly used in applications where moderate forming and stamping are required. They find applications in manufacturing various components, including automotive parts, pipes, and general structural components.

Surface Finish

SPHD steel sheets and coils may have different surface finishes based on customer requirements. Common finishes include pickled and oiled, as well as mill scale.

Standards and Certification

SPHD conforms to the Japanese Industrial Standard (JIS) G3131. It is essential to ensure compliance with the specified JIS standard when procuring SPHD steel to guarantee the material’s quality and suitability for the intended application.

Equivalent Grades

Similar to SPHC, SPHD may have equivalent grades in other international standards, such as ASTM or DIN. Identifying equivalent grades helps ensure that the material meets similar specifications across different standards.

When working with JIS G3131 SPHD steel sheets and coils, it is important to follow recommended processing and handling guidelines to maintain the material’s integrity and performance. Users should also consult the relevant standards and specifications to ensure proper application and compatibility with their specific requirements.

Albert Turner

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