JIS G3131 SPHE Steel Sheet Coil

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

Chemical Composition

SPHE steel has its own specified chemical composition, including elements such as carbon, manganese, and other alloying elements. The precise composition is detailed in the JIS G3131 standard.

Mechanical Properties

SPHE steel is expected to meet certain mechanical properties, including tensile strength, elongation, and thickness. These properties ensure that the material is suitable for its intended applications, which may involve moderate forming and bending.

Hot-Rolled Process

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


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

Surface Finish

SPHE 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

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

Equivalent Grades

SPHE 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 SPHE 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.