JIS G3131 is a specific standard for steel products in the Japanese Industrial Standards (JIS), which is mainly used to specify the technical requirements and test methods for hot-rolled low-carbon steel plates and strips.

The production method of JIS G3131 mainly involves raw material preparation, hot rolling process, quality control and testing, subsequent processing, classification and marking, and finished product inspection and delivery. These steps ensure that the quality and performance of the steel meet the requirements of the JIS G3131 standard.

JIS G3131 chemical composition:

SPHC chemical composition requirements: Carbon (C): maximum 0.12%

Manganese (Mn): maximum 0.60%

Sulfur (S): maximum 0.045%

Phosphorus (P): maximum 0.035%

SPHD chemical composition requirements: Carbon (C): maximum 0.10%

Manganese (Mn): maximum 0.45%

Sulfur (S): maximum 0.035%

Phosphorus (P): maximum 0.035%

SPHE chemical composition requirements: Carbon (C): maximum 0.08%

Manganese (Mn): maximum 0.40%

Sulfur (S): maximum 0.030%

Phosphorus (P): maximum 0.030%

Main features of JIS G3131:

1. Good processing performance: JIS G3131 has good processing performance and is suitable for manufacturing various parts and structural parts that require complex forming.

2. Excellent mechanical properties: JIS G3131 has appropriate strength and ductility to meet the needs of different applications. Good elongation enables them to maintain stable performance when subjected to load.

3. Good weldability: JIS G3131 has excellent welding performance, which makes them one of the preferred materials for manufacturing welded structural parts.

4. Strict quality control: The JIS G3131 standard has strict requirements on the chemical composition, mechanical properties, dimensional tolerance and surface quality of steel plates and steel strips.

5. Diversified product specifications: Steel plates under the JIS G3131 standard allow users to choose appropriate material specifications according to specific application scenarios, reduce production costs and improve production efficiency.

The main application scope of JIS G3131 hot-rolled low-carbon steel plates and steel strips:

Automobile manufacturing: used for the manufacture of automobile body, chassis, wheels and other parts. Home appliance industry: used to manufacture the shell, packet and internal parts of home appliances such as refrigerators, washing machines, air conditioners, etc. In the construction field, it is used to manufacture various building structural parts, such as beams, columns, plates, etc. In the field of machinery manufacturing, it is used to manufacture various mechanical parts and components. Shipbuilding: used to manufacture hulls, decks, cabins and other parts; in the packaging and container manufacturing field, used to manufacture various metal packaging containers, such as cans, metal barrels, etc.