Q235BU Section Steel

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Q235BU Section Steel

Q235BU section steel is a mild carbon structural steel. Its yield strength is 235 MPa, which is comparable to SS400 Vietnam/Japanese JIS grade. It performs well in welding and plasticity.

Strength is the ability of metal materials to resist damage (excessive plastic deformation or fracture) under load. It is usually divided into tensile strength, compressive strength, bending strength and shear strength.


Q235 steel is used in a wide variety of applications, including construction and manufacturing. It has high strength, weldability, and plasticity, which make Q235BU section steel it a good choice for structural elements that require load-bearing capacity and stability. Q235 also has good corrosion resistance, and it can be galvanized to provide additional protection from oxidation.

The tensile strength of this type of steel is typically 370 to 500 MPa, which makes it capable of supporting heavy loads and providing strong structural stability. Its weldability enables it to be joined easily with other components, allowing for efficient fabrication and construction. Q235 also has good ductility, allowing it to withstand significant plastic deformation without cracking or breaking.

The ductility of this type of steel also makes it easy to shape and form during manufacturing processes. This versatility contributes to streamlined production and increased productivity. In addition, it is cost-effective compared to other types of steel. However, it is important to note that the specific properties of this material can vary depending on heat treatment and other factors. Therefore, it is best to consult with relevant specifications and standards for precise information about its properties. These characteristics also make this type of steel ideal for use in applications where a balance between strength and affordability is desired. This includes building structures, rail cars, and other manufacturing projects.


Q235 steel is known for its excellent weldability, which allows it to be welded using various techniques. This versatility makes it an ideal material for a variety of applications. This includes construction projects, manufacturing machinery, and general-purpose steel products. It also has good corrosion resistance, which is important for many applications. Depending on the application, steel can be protected from corrosion with coatings or galvanizing.

The weldability of steel is largely dependent on its hardness, which depends on the chemical composition of the steel, specifically the carbon content. In addition to carbon, alloying elements such as manganese, chromium, vanadium, and nickel also influence the hardness of the steel. As such, it is crucial to know the type of steel used in an engineering project before choosing a welding method.

This paper uses the finite element software Abaqus to simulate the temperature field distribution of a low-carbon Q235A thick plate during the ultra-NGMAGW process. The plate has dimensions (length x width x thickness) of 216 x 150 x 18 mm. The base material (BM) is a low-carbon steel with a chemical composition of 0.15% C, 0.4% Si, 1.2% Mn, 2.2% Mo, and 0.08% Ni. The filler wire is ER90S-G with a diameter of 1.2 mm. The simulated welds of the plates are shown in Figure 6. Cross-section profiles of the welded joints reveal that the BM and the ultra-NGMAGW have three distinct fusion zones.


Q235 is a plain carbon steel material that is used carbon steel square bar in the construction industry. It has good plasticity, weldability, and strength. It is often referred to as mild steel and is available in different grades. The 235 refers to the yield point of this material, which is about 235 MPA. This is comparable to the SS400 Japanese and Vietnam grade of steel.

This type of steel has excellent cold-bending performance. It can be used to make structural components that are required for a wide range of applications. It also has excellent weldability and can be welded easily. This type of steel is suitable for use in a wide variety of applications, including factories, steel bars, towers, and vehicles.

The strength of metal materials can be divided into several categories, such as tensile strength, compressive strength, bending strength, and shear strength. These strengths are generally determined by testing the material’s ability to resist damage under static load. In general, the stronger a metal is, the more resistant it will be to damage under normal conditions. This is a result of its increased plasticity and toughness. However, researchers at Purdue University have discovered a treatment for steel that can combine these properties. Their findings were published in Science Advances. The research was conducted in collaboration with researchers at Sandia National Laboratories and supported by a grant from the U.S. Department of Energy’s Office of Science.


Q235 is a low-carbon steel that is easy to weld. It can withstand heavy loads and provide structural stability for buildings and bridges. It is also available in different grades to suit specific applications. Q235 and Q345 are two of the most common types of steel used in construction projects. Each has its own unique strengths and weaknesses, but both are suitable for many different uses.

The yield strength of a steel is a measure of how much pressure it can withstand before it begins to deform permanently. The yield strength of steel is based on its ability to resist tensile stress, compression stress, bending, shearing, and other forces.

Generally speaking, the higher the yield strength, the stronger the steel. However, high-strength steel can be expensive to produce because it requires more time to create. As a result, it is usually reserved for critical areas of a building like beams or columns.

The yield strength of Q235 steel is similar to that of SS400, but it has better weldability and plasticity. It is also able to withstand cold bending. This type of steel is ideal for use in factories, bridges, ships, and vehicles. It is also often used to make mechanical parts. It can be welded to other materials easily, and it is resistant to corrosion. It is also easy to work with and can be shaped into different shapes.

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