Q235 Carbon Steel Round Steel
Q235 carbon steel round steel is an affordable material that offers impressive machinability. It has a moderate hardness, making it easy to cut, drill, and machine.
It also has good welding, toughness, and plasticity. This makes it ideal for welded structures, such as factory buildings, towers, boilers, bridges, and vehicles.
Excellent Weldability
Q235 carbon steel round steel is highly weldable, making it an ideal choice for use in a wide variety of industrial applications. It can be welded using various techniques, including arc welding and resistance welding. Its excellent weldability also helps to speed up the fabrication process, reducing both costs and project timelines.
In addition to its outstanding weldability, Q235 steel is also easy to machine. Its moderate hardness makes it easily cut, drilled, and machinable with a variety of tools and techniques. These qualities make it an ideal choice for a wide range of industrial projects and applications, from construction to manufacturing.
For a better understanding of the mechanical behavior of Q235 steel, coupon tests on its base metal and welds have been conducted. The post-fire mechanical properties of these materials were analyzed under different cooling conditions. It was found that cooling in air significantly increased the ductility of the base metal and welds, while it caused a slight decrease in the tensile strength.
Due to its affordable price and superior characteristics, Q235 steel is an ideal material for a wide variety of industrial applications. However, it is important to note that the specific properties of this type of steel can vary based on heat treatment and other factors. Therefore, it is recommended that you consult the relevant specifications and standards for precise information.
High Tensile Strength
The 235 designation in Q235 carbon steel round steel refers to its yield strength, which is approximately 235 megapascals (MPa). The yield strength indicates how much stress or load the material can withstand before it starts to deform plastically permanently. Higher yield strength levels are typically associated with stronger materials, and thus more suitable for use in structural applications where increased resistance to heavy loads is required.
Q235 carbon steel has excellent weldability, allowing it to be joined Q235 carbon steel round steel together using various welding methods including arc, gas and resistance welding. This helps streamline fabrication, saving time and money while ensuring strong and reliable welds.
It also possesses good ductility and toughness, meaning it can be stretched or bent without breaking, even when subjected to significant stresses or loads. This versatility allows it to be used in a wide variety of different applications and industries, including manufacturing machine parts, car components and structural beams and columns for buildings and bridges.
Due to its versatile properties, carbon steel is a widely used material in a variety of different applications. This is especially true for low carbon mild steel, which has excellent weldability, formability and tensile strength. It is also inexpensive and readily available, making it an appealing choice for projects with tight budgets. However, the exact characteristics and properties of a specific steel grade should be carefully evaluated before selecting it for a given application.
Good Ductility and Toughness
Q235 carbon steel is a type of low-carbon structural steel that has many uses in construction and engineering. It has excellent weldability and tensile strength. It also has good ductility and toughness. Q235 steel is commonly referred to as mild steel, and it can be found in buildings, machinery, and automobiles.
The “Q” in Q235 refers to its yield strength, which is 235 megapascals (MPa). This grade of steel can be used for a wide range of applications and can withstand high levels of stress. It is available in a variety of thicknesses and lengths, making it a versatile choice for projects.
Q345 is a higher-strength version of the standard Q235 steel, and it can be used for parts that require extra resistance to stress or heavy loads. It is typically found in parts of a building that connect to other components or support the structure’s base.
This study investigated the mechanical behaviors of Q235 structural steel after fire and cooling under different conditions. Tests on coupon specimens of the base metal and welds were conducted to investigate post-fire mechanical properties, such as stress-strain curves, elastic modulus, tensile strengths, Q195U type channel steel profile percentage elongation after fracture, and fracture strain. The results showed that the ductility of the base metal increased after cooling in air, but it decreased when cooled in water.
Excellent Corrosion Resistance
Pipeline transport is an important industrial activity, and Q235 low-carbon steel is often used for the construction of pipelines. Since the development of the petroleum, metallurgical, and mechanical industries, the need for pipeline transportation has increased, along with the demand for large-diameter pipes with high efficiency and long service life. This has prompted researchers to study the corrosion behavior and damage laws of low-carbon steel pipelines in various natural atmospheric and working environments.
The cyclic salt spray accelerated corrosion test is an ideal testing method for evaluating the corrosion resistance of low-carbon steel. This type of test allows scientists to determine the corrosion rate of the steel and understand the relationship between the morphology and chemical composition of the corrosion products. The macroscopic and microscopic morphology of the corroded steel is characterized by appearance inspection, scanning electron microscopy analysis, and energy spectrum analysis.
Corrosion weight loss, morphology, and product composition of the steel are influenced by the wetting-drying cycles. When the corroded surface is wet, it accelerates ion transfer by forming FeSO4, and it facilitates electron transfer by producing Fe3O4. The corroded metal surface has a layered structure, and it can be distinguished from the uncorroded steel by its alumina crystals.
The corrosion of low-carbon steel can be prevented by coating the material with a suitable protective layer. A waterborne epoxy (WEP) coating with the proper properties can provide excellent protection for the steel surface. The tribological performance of PBI dispersion graphene (GR)/WEP has been studied, and the impedance value reached about 109 O*cm2 at a GR/WEP ratio of 1:1.
