China 51B20 alloy steel manufacturer

51B20 alloy steel is a high-quality cold heading steel material that is widely used in manufacturing various high-strength and high-toughness mechanical parts. The material has excellent processability and mechanical properties, making it ideal for cold heading and spheroidizing annealing.

Product features of 51B20 alloy steel:

1. Stable composition: 51B20 alloy steel has stable composition and low content of harmful elements, ensuring the purity and high quality of the steel.

2. High purity of steel: Through strict smelting and refining processes, 51B20 alloy steel has a small decarburization layer and few surface defects, which improves the overall performance of the material.

3. Excellent cold heading performance: After spheroidizing annealing treatment, 51B20 alloy steel shows excellent cold heading performance and is easy to be processed into parts of various shapes and sizes.

4. Good hardenability: 51B20 alloy steel has good hardenability and can obtain uniform hardness and strength distribution during the quenching process.

5. High strength and high toughness: This material has high strength and toughness, can withstand large stress and vibration, and is suitable for manufacturing various mechanical parts requiring high strength and high toughness.

The wire rod product specification range of 51B20 alloy steel is φ5.5-42mm, which can be customized according to customer needs.

As a professional supplier of cold heading steel materials, we have rich production experience and advanced production equipment, and can provide customers with high-quality and efficient services. Our products have been widely used in various fields.

Physical properties of 51B20 alloy steel:

1. Density: usually around 7.85g/cm³, which is similar to ordinary steel, which makes it achieve a good balance between weight control and processing convenience;

2. Melting point: approximately 1450-1500°C. The higher melting point ensures that steel can maintain a certain structural stability in high-temperature environments, and is suitable for some scenarios involving thermal processing or high-temperature service.

Mechanical properties:

1. Tensile strength: After appropriate heat treatment, the tensile strength can reach 800-1000MPa. The strong tensile ability enables it to withstand large tensile loads. It is a key component that can withstand tensile forces in the fields of construction, machinery manufacturing and other fields. ;

2. Yield strength: Generally not less than 600 MPa, which means that when subjected to a certain external force, the steel can maintain a stable shape and is not prone to plastic deformation, ensuring the safety and reliability of use.

3. Elongation: up to 10 - 15%. A certain elongation gives steel good plasticity, which facilitates cold forming, such as stamping, bending and other processes, and can meet the manufacturing needs of complex-shaped parts.

4. Impact toughness: It has a high impact toughness value at room temperature and can effectively resist impact loads and avoid brittle fracture under sudden impact forces. It is often used to manufacture parts that work in dynamic stress environments, such as automotive semi-finished vehicles. Shafts, gears, etc.

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