What is Q235A steel plate

Q235A steel plate is a common low carbon steel plate, widely used in construction, bridges, machinery manufacturing and other fields. It is a steel grade in the Chinese national standard GB/T 700-2006 and has good weldability and processability.

The chemical composition of Q235A steel plate

The chemical composition of Q235A steel plate includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), etc. element. Its chemical composition is as follows:

Carbon (C) content: less than or equal to 0.22%

Silicon (Si) content: less than or equal to 0.35%

Manganese (Mn) Content: less than or equal to 1.4%

Phosphorus (P) content: less than or equal to 0.045%

Sulfur (S) content: less than or equal to 0.050%

These elements Content control makes Q235A steel plate have good weldability and processability.

Mechanical properties of Q235A steel plate

The mechanical properties of Q235A steel plate include tensile strength, yield strength, elongation and other indicators. According to the national standard GB/T 700-2006, the mechanical properties of Q235A steel plate are as follows:

Tensile strength: greater than 370MPa

Yield strength: greater than 235MPa

Extension Rate: greater than 25%

These excellent mechanical properties make Q235A steel plate widely used in various application fields.

Heat treatment of Q235A steel plate

Q235A steel plate can improve its mechanical properties and organizational structure through heat treatment. Common heat treatment methods include normalizing, quenching and tempering. Through appropriate heat treatment, the strength and toughness of Q235A steel plate can be enhanced and its service life can be improved.

Application fields of Q235A steel plate

Due to its good weldability, processability and mechanical properties, Q235A steel plate is widely used in many fields, including but not limited to:

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Building structure: used to manufacture building frames, beams and columns and other components.

Bridge engineering: used to manufacture bridge main beams, beams and other components.

Vehicle manufacturing: used to manufacture automobile bodies, frames and other components.

Machinery manufacturing: used to manufacture mechanical equipment, parts, etc.

Advantages of Q235A steel plate

Q235A steel plate has the following advantages:

Low carbon content, which is beneficial to welding and processing.

Stable mechanical properties, good strength and toughness.

The price is relatively low and cost-effective.

Widely used in many fields.

Market prospects of Q235A steel plates

With the development of construction, bridges, automobiles and other industries, the demand for Q235A steel plates will continue to grow. At the same time, Q235A steel plate has excellent performance and lower price.