HRB 60-HRB 80 Q235 Alloy Versatile Low Carbon Steel For Construction

Product Specification

Q235 Alloy Is A Versatile Low-Carbon Steel With Good Strength, Ductility, And Weldability.

Q235 Alloy is a widely used low-carbon steel known for its excellent mechanical properties and versatility in various structural and engineering applications. As a carbon structural steel, Q235 offers a good balance of strength, ductility, and weldability, making it a popular choice for construction and manufacturing projects that require a reliable and easy-to-work-with material.

Chemical Composition:

Q235 Alloy is composed primarily of iron, with the following key elements contributing to its mechanical properties:

• Carbon (C): 0.12-0.20% – The carbon content in Q235 is slightly higher than in Q215, providing better strength while maintaining good ductility and toughness.
• Manganese (Mn): 0.30-0.70% – Manganese enhances tensile strength, hardness, and wear resistance, making the alloy more durable and suitable for load-bearing applications.
• Silicon (Si): ≤0.30% – Silicon is included to improve deoxidation during the steelmaking process, resulting in a cleaner, higher-quality alloy with a smooth surface finish.
• Phosphorus (P): ≤0.045% – Low phosphorus content ensures that the steel remains tough and reduces the risk of brittleness.
• Sulfur (S): ≤0.050% – Sulfur is kept at a low level to minimize inclusions, which can negatively affect machinability and overall material strength.

Mechanical Properties:

Q235 Alloy is known for its reliable mechanical performance, making it suitable for a wide range of structural and engineering applications:

• Tensile Strength: 375-500 MPa – This tensile strength range provides strong resistance to pulling forces, making Q235 Alloy suitable for various structural applications.
• Yield Strength: ≥235 MPa – The yield strength of Q235 ensures that it can withstand significant stress without permanent deformation, making it reliable for load-bearing structures.
• Elongation: ≥23% – The alloy’s elongation percentage indicates good ductility, allowing the material to be stretched or bent without breaking, which is important in forming and fabrication processes.
• Density: Approximately 7.85 g/cm³ – This typical steel density provides a good balance between weight and strength.
• Hardness: HRB 60-80 – The hardness range of Q235 Alloy makes it easy to machine and work with, while still providing adequate resistance to wear and deformation.

Applications:

Q235 Alloy’s balanced mechanical properties and chemical composition make it a highly versatile material used in a variety of applications:

• Construction: Q235 Alloy is widely used in the construction of buildings, bridges, and other infrastructure projects due to its good strength and weldability. It is commonly used for structural beams, columns, and steel frames.
• Manufacturing: The alloy is used in the production of various machinery parts, metal frameworks, and equipment that require moderate strength and durability.
• Pipes and Tubing: Q235 Alloy is often used in the manufacturing of pipes and tubes for applications such as water, gas, and oil transportation, as well as for structural purposes.
• Automotive Industry: In the automotive sector, Q235 Alloy is used for making parts that require a combination of strength and formability, such as chassis components and brackets.
• Metal Fabrication: Q235 is a preferred material for general metal fabrication, including the production of metal plates, sheets, and various structural components due to its ease of processing and forming.

Summary:

Q235 Alloy is a highly versatile and widely used low-carbon steel that offers a strong combination of strength, ductility, and weldability. Its balanced chemical composition and mechanical properties make it an ideal choice for a wide range of structural and engineering applications, from construction and manufacturing to metal fabrication and automotive parts. Q235 Alloy provides consistent performance, ease of processing, and reliability, making it a preferred material for projects that require a durable, cost-effective, and easy-to-use steel.