Hot Rolled Carbon Steel Round Bars S20C
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 120000 m.t./month
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- Quality Product
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Hot Rolled Carbon Steel Round Bars S20C
Product Specification
1, Chemical Composition %
Grade | C | Si | Mn | S | P | Cr | Ni | Cu |
S20C | 0.08-0.23 | 0.15-0.35 | 0.30-0.60 | ≤0.030 | ≤0.030 | ≤0.20 | ≤0.25 | ≤0.25 |
2, Mechanical Properties
Strength of Extension σb | Yield Strength σs | Elogation δ5 |
≥245 Mpa | ≥245 Mpa | ≥28% |
3, Diameter: 16mm - 300mm
Length: Max 12m
Application
Can be used to manufacture all kinds of machine parts with high tenacity but won't be subjected to large stress.
Can be used to manufacture carburizing and carbonitriding parts with high surface hardness in general machinery and automobile, agricultural machinery.
Product Main Points
1, Heat Treatment: normalizing, annealing, tempering, quenching
2, Surface Treatment: black, grinding, bright, polish
3, Product Process: hot rolled, cold drawn, forged
FAQ
1, Payment Terms:
30% T/T deposit & 70% T/T before delivery.
Irrevocable L/C at sight
2, Trade Terms:
EXW, FOB, CIF, CNF
3, Delivery Time:
Normally 30-40 days. According to quantity.
4, Manufacture or Trading Company:
CNBM is a state-owned fortune global 500 trading company. We have intergrated supply system.
There are about 20 overseas locations in different countries.
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About Us
- Q:
- Steel round bars are a suitable choice for the production of oil and gas industry components. This is because they possess qualities like high strength, durability, and resistance to corrosion, which are highly valued in this sector. The demanding conditions of the industry, including harsh environments, high pressures, and extreme temperatures, necessitate materials that can endure such challenges. Steel round bars satisfy these requirements and are frequently employed to manufacture essential components like valves, flanges, pipes, and fittings. These components play a crucial role in the smooth functioning of the oil and gas industry. Moreover, the versatility of steel round bars allows for easy machining and welding, enabling the creation of intricate shapes and structures that are integral to this industry. In summary, steel round bars are a dependable and extensively utilized material in the production of oil and gas industry components.
- Q:
- Yes, steel round bars can be used in the renewable energy industry. Steel round bars are versatile and durable, making them suitable for various applications in renewable energy projects. For example, they can be used as support structures for solar panels, wind turbine towers, and hydroelectric power plants. Steel round bars provide the necessary strength and stability to withstand the harsh environmental conditions often associated with renewable energy projects. Additionally, steel is a highly recyclable material, aligning with the sustainable principles of the renewable energy industry. Therefore, steel round bars are a viable and commonly used component in the construction and development of renewable energy infrastructure.
- Q:
- To prevent rusting of steel round bars, there are several effective methods at your disposal: 1. Employ a protective coating: One effective way to prevent rust on steel round bars is to apply a protective coating. This can be accomplished through the use of paint, epoxy, or other coatings that are resistant to corrosion. The coating acts as a barrier between the steel and moisture, thus preventing oxidation and the formation of rust. 2. Ensure dryness of the bars: Moisture is a key factor in the formation of rust. Therefore, it is crucial to keep the steel round bars dry at all times. Store them in a dry area, away from water or humidity. If the bars come into contact with water, be sure to thoroughly dry them to prevent any residual moisture from causing rust. 3. Implement proper ventilation: Adequate ventilation is essential for reducing moisture levels in the air, thereby preventing rust. Make sure that the storage area or facility where the steel round bars are kept has good airflow and is well-ventilated. This will minimize the accumulation of moisture and the formation of rust. 4. Utilize corrosion inhibitors: Corrosion inhibitors are chemical compounds that can be applied to the surface of steel round bars to prevent rust. These inhibitors work by creating a protective layer on the steel, inhibiting the oxidation process. There are various types of corrosion inhibitors available, so choose the one that fits your specific needs. 5. Regularly maintain and inspect: Routinely inspect the steel round bars for any signs of rust or damage. If any rust spots are detected, promptly remove them using a wire brush or sandpaper, and apply a fresh coat of protective coating. Additionally, ensure that the bars are stored in a clean and dry environment to minimize the risk of rust formation. By adhering to these preventive measures, you can significantly decrease the likelihood of rusting in steel round bars and extend their lifespan.
- Q:
- The ability of a steel round bar to resist fatigue refers to its capacity to endure repeated cycles of loading and unloading without failing or deforming. Fatigue resistance is a crucial mechanical property for materials utilized in diverse applications, including structural components, machinery, and automotive parts. Several factors influence the fatigue resistance of a steel round bar, including the specific grade of steel, its microstructure, surface condition, and the applied loading conditions. Steel is widely recognized for its exceptional fatigue resistance in comparison to other materials, which explains its extensive utilization across various industries. The high strength, ductility, and presence of various alloying elements in steel contribute to its resistance to fatigue. These characteristics enable steel to endure cyclic loading without significant deformation or weakening. Moreover, the microstructure of the steel, such as grain size and distribution, significantly impacts its fatigue resistance. Engineers typically conduct fatigue tests, such as rotating beam or axial loading tests, to assess the fatigue resistance of a steel round bar. These tests subject the steel bar to controlled cyclic loading and measure the number of cycles it can withstand before failure occurs. The results determine the fatigue strength or fatigue limit of the steel, representing the maximum stress level it can indefinitely endure without failing. It is important to acknowledge that the fatigue resistance of a steel round bar can vary due to factors like surface defects, stress concentration, and environmental conditions. Therefore, proper design considerations, such as surface treatments, stress reduction techniques, and appropriate loading specifications, are crucial to ensure the desired fatigue performance of the steel round bar in specific applications.
- Q:
- The tolerances for steel round bars typically depend on the specific industry standards and customer requirements. However, common tolerances for steel round bars include variations in diameter, straightness, length, and surface finish. These tolerances ensure that the steel round bars meet the desired specifications and can be effectively used in various applications.
- Q:
- Steel round bars are commonly used in the manufacturing of mining equipment due to their high strength and durability. These bars are often utilized as a key structural component in the construction of heavy machinery such as crushers, drilling rigs, and conveyor systems. They provide the necessary support and stability required to withstand the harsh operating conditions and heavy loads typically encountered in mining operations. Additionally, steel round bars can be machined and shaped to create various components such as shafts, pins, and gears, further enhancing the functionality and reliability of mining equipment.
- Q:
- There are several types of steel round bar surface finishes that can be used to improve cleanliness. 1. Bright Surface Finish: This is achieved by polishing the steel round bar, resulting in a smooth and reflective surface. Bright surface finishes are commonly used in applications where cleanliness and appearance are important, such as in the manufacturing of kitchen appliances or decorative items. 2. Satin Finish: This finish is achieved by brushing the steel round bar with fine abrasive pads, resulting in a smooth and matte surface. Satin finishes are often used in applications where a clean and modern aesthetic is desired, such as in architectural designs or furniture manufacturing. 3. Pickled Finish: This finish involves immersing the steel round bar in an acid solution, which removes any impurities or oxides from the surface. Pickled finishes are commonly used in applications where the steel round bar will be further processed, such as in the production of pipes or tubes. 4. Passivated Finish: This finish involves treating the steel round bar with a chemical solution, which forms a protective oxide layer on the surface. Passivated finishes are used to enhance the corrosion resistance of the steel round bar, making it suitable for applications in harsh or corrosive environments. 5. Shot Blasted Finish: This finish involves propelling small metal or ceramic particles at high velocity onto the surface of the steel round bar. Shot blasting removes any scale, rust, or surface contaminants, resulting in a clean and textured surface. Shot blasted finishes are commonly used in applications where a good bond between the steel round bar and another material, such as paint or coating, is required. Overall, the choice of steel round bar surface finish depends on the specific application and the desired level of cleanliness. Each finish offers unique properties and benefits, allowing for improved cleanliness and performance in various industries.
- Q:What is the difference between strip steel and round steel? Where are they mainly used?
- Round steel is a solid strip of steel whose cross section is round. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter. Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of which: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. Round bars larger than 25 millimeters are used mainly for making mechanical parts or for seamless steel tubes.Mainly used in the manufacture of various tools, cutting tools, moulds and tools (see tool steel), but also a large number of used in the manufacture of various mechanical parts.
- Q:
- Steel round bars are measured and specified based on their diameter. The diameter of a round bar is typically measured in millimeters (mm) or inches (in). The measurement is taken across the widest point of the circular cross-section. In terms of specification, steel round bars are commonly specified by their diameter and length. For example, a specification for a steel round bar may be written as "25mm diameter x 3 meters length". This means that the bar has a diameter of 25mm and a length of 3 meters. Additionally, steel round bars may also be specified based on their tolerance, surface finish, and grade. Tolerance refers to the allowable deviation from the specified diameter. Surface finish refers to the quality of the bar's surface, which can range from rough to smooth. Grade refers to the quality and composition of the steel used to make the round bar, such as mild steel, carbon steel, or alloy steel. It is important to accurately measure and specify steel round bars to ensure that they meet the required dimensions and properties for a particular application.
- Q:12mm Round steel, the material is Q235, the maximum weight can bear?
- Standard Specification for hot rolled round steel is 5.5-250 mm. Among them, 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets.
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