S20C-B/S45C-B Steel Round Bar

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 100000 m.t./month

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S20C-B/S45C-B Steel Round Bar

Specifications

S20C-B/S45C-B steel round bar
Dia 18-60mm
Grade 20,45#
Standard GB,JIS,ASTM,DIN,AISI,BS
LF & VD forge;ISO&TUV approved

S20C-B/S45C-B steel round bar

Round bar steel diameter 18-60mm,material 20#,45#,55#,40CrUP,40CrUC,40Mn2,20CrMnTi,42CrMo

Rolling tube blank diameter 50-130mm.material 20#,45#,10#,35#,37Mn5,Q345,20Mn2/30Mn2,45Mn2,27SiMn

Casting round tube blank diameter160-230mm,material 20#,45#,25Mn,Q345B,20Mn2/30Mn2,45Mn2,27SiMn,33Mn2V/36Mn2V,

Bearing steel diameter18-60mm,material GCr15,Flat spring steel material 60Si2Mn,55CrMnA,50CrVA

Grade	Dia(mm)	C	Si	Mn	P	S	Ni	Cu	Cr
20	18-60	0.17-0.23	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.30	≤0.25	≤0.25
45		0.42-0.50	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.30	≤0.25	≤0.25

Grade

Dia(mm)

18-60

0.17-0.23

0.17-0.37

0.35-0.65

≤0.035

≤0.30

≤0.25

0.42-0.50

0.17-0.37

0.35-0.65

≤0.035

≤0.30

≤0.25

Products

S20C-B/S45C-B Steel Round Bar

Q: Can steel round bars be used in the production of construction materials?: Indeed, the utilization of steel round bars is feasible in the manufacturing of construction materials. Owing to their remarkable robustness and endurance, steel round bars find frequent application within the construction sector. These bars are instrumental in fortifying concrete structures, exemplified by the reinforcement of beams, columns, and slabs, thereby enhancing their resilience and steadfastness. Furthermore, in the construction of buildings and bridges, steel round bars can be employed in the creation of steel frames, trusses, and various structural constituents. The widespread popularity of these bars stems from their adaptability and capacity to endure substantial burdens in the construction industry.

Q: What are the advantages of using mild steel round bars?: There are several advantages of using mild steel round bars in various applications. Firstly, mild steel round bars have excellent strength and durability. They are able to withstand high amounts of stress and pressure, making them suitable for use in construction, manufacturing, and engineering projects. The strength of mild steel round bars ensures that they do not easily deform or break under heavy loads, providing a reliable and long-lasting solution. Secondly, mild steel round bars have good weldability. They can be easily joined or attached to other materials through welding, making them versatile in different applications. This allows for easy customization and flexibility in design, as the bars can be shaped and connected to create complex structures or components. Additionally, mild steel round bars have a low carbon content, making them more cost-effective compared to other types of steel. They are readily available and affordable, making them a popular choice in various industries. Moreover, mild steel round bars have good machinability. They can be easily cut, drilled, and shaped using common machining techniques, allowing for easy fabrication and customization. This makes them suitable for a wide range of applications, from construction to automotive components. Lastly, mild steel round bars have good corrosion resistance. While they may not be as corrosion-resistant as stainless steel, they still offer adequate protection against rust and other forms of corrosion. This makes them suitable for outdoor applications or environments with high humidity or exposure to moisture. In summary, the advantages of using mild steel round bars include their excellent strength and durability, good weldability, cost-effectiveness, machinability, and corrosion resistance. These factors make them a reliable and versatile choice for various industrial and construction applications.

Q: Can steel round bars be used in the manufacturing of gears?: Yes, steel round bars can be used in the manufacturing of gears. Steel round bars are commonly used in gear manufacturing due to their high strength, durability, and resistance to wear and tear. The round shape of the bar allows for easy machining and shaping into the desired gear design. Steel round bars also have excellent mechanical properties, such as high tensile strength and good fatigue resistance, which are essential for gears that experience heavy loads and repetitive motions. Additionally, steel round bars can be heat-treated to further enhance their hardness and toughness, making them suitable for demanding gear applications. Overall, steel round bars are a popular choice in gear manufacturing due to their versatility and reliability.

Q: Can steel round bars be used in the production of fasteners?: Yes, steel round bars can be used in the production of fasteners. Steel round bars are commonly used as a raw material in the manufacturing of various types of fasteners such as bolts, screws, nuts, and studs. The round shape of steel bars allows for easier machining and forming processes required to create threaded or non-threaded fasteners. Steel is a popular choice for fasteners due to its strength, durability, and resistance to corrosion. Additionally, steel round bars can be easily heat-treated to improve their mechanical properties, making them suitable for a wide range of fastening applications in various industries.

Q: What are the different heat treatment processes used for steel round bars?: Steel round bars can undergo several heat treatment processes to enhance their mechanical properties and overall performance. These processes include annealing, normalizing, quenching, tempering, and case hardening. 1. Annealing involves heating the steel round bars to a specific temperature and then slowly cooling it to relieve internal stresses and improve ductility. It also refines the grain structure, making the steel softer and more workable. 2. Normalizing is similar to annealing, but the steel round bars are cooled in still air. This process refines the grain structure and improves mechanical properties like strength and toughness. 3. Quenching is a rapid cooling process where the steel round bars are immersed in a quenching medium such as oil, water, or polymer. It achieves high hardness and strength by transforming the steel's microstructure into martensite. However, it can also make the steel more brittle, so tempering is often done afterward. 4. Tempering involves reheating the quenched steel round bars to a specific temperature and then slowly cooling it. This process reduces the brittleness caused by quenching and improves toughness and ductility. The temperature and duration of tempering can be adjusted for desired mechanical properties. 5. Case hardening is a surface heat treatment process that increases hardness and wear resistance. Carbon or other alloying elements are introduced to the steel's surface, which is then heated to a specific temperature. This creates a hardened outer layer while maintaining a tough core. These heat treatment processes offer steel round bars a wide range of mechanical properties and performance characteristics, making them suitable for various applications in industries like automotive, construction, manufacturing, and aerospace. The choice of specific heat treatment process depends on desired properties, steel composition, and intended application of the round bars.

Q: What are the different types of steel round bar machining processes?: There exist various steel round bar machining processes, each with distinct characteristics and applications. Some of the most prevalent types are as follows: 1. Turning: By rotating the steel round bar against a cutting tool, material is removed to achieve the desired shape. Turning is frequently employed to create cylindrical shapes or eliminate excess material from the surface. 2. Drilling: This machining process involves the creation of holes in the steel round bar using a rotating cutting tool. Drilling is commonly utilized to generate holes for bolts or other fasteners. 3. Milling: A versatile machining process, milling entails the removal of material from the surface of the steel round bar using a rotating cutting tool. This technique can be employed to fashion intricate shapes, slots, or grooves. 4. Grinding: Material is removed from the surface of the steel round bar using an abrasive wheel in the grinding process. It is often employed to achieve a smooth finish or eliminate imperfections on the surface. 5. Boring: Boring enlarges an existing hole in the steel round bar using a cutting tool. It is frequently used to create larger diameter holes or achieve greater precision. 6. Knurling: In this machining process, ridges or grooves are created on the surface of the steel round bar, often to enhance grip or create a decorative effect. 7. Thread cutting: External or internal threads are created on the surface of the steel round bar using the process of thread cutting. This technique is commonly used to create threaded holes or threaded fasteners. These examples merely scratch the surface of the diverse steel round bar machining processes. Each process possesses unique advantages and limitations, and the selection of which process to employ depends on the specific requirements of the application.

Q: What is the fatigue strength of a steel round bar?: The fatigue strength of a steel round bar refers to its ability to withstand repeated or cyclic loading without failure. It is a measure of the bar's resistance to fatigue or fatigue-induced failure. The fatigue strength of a steel round bar depends on various factors such as the material composition, manufacturing process, surface finish, and geometry of the bar. To determine the fatigue strength of a steel round bar, fatigue tests are typically conducted using standardized procedures. These tests involve subjecting the bar to repeated loading cycles that simulate real-world conditions. The bar is subjected to a specific stress amplitude or stress range, and the number of cycles required to cause failure is recorded. The fatigue strength of a steel round bar is usually expressed as the stress level or stress range at which failure occurs after a certain number of cycles, such as 10^6 cycles or 10^7 cycles. This value is commonly referred to as the fatigue limit or endurance limit. For steel round bars, the fatigue strength is generally high compared to other materials, and it is usually expressed in terms of stress in megapascals (MPa) or pounds per square inch (psi). It is important to note that the fatigue strength of a steel round bar can vary depending on factors such as the presence of surface defects, residual stresses, temperature, and environmental conditions. Therefore, it is crucial to consider these variables when determining the fatigue strength of a specific steel round bar for a given application.

Q: Can steel round bars be used in the manufacturing of lighting fixtures?: Lighting fixtures can indeed be manufactured using steel round bars. Steel, being a flexible and long-lasting material, can offer both structural support and aesthetic appeal to lighting fixtures. By molding steel round bars into different shapes and sizes, various components of lighting fixtures can be created, including frames, bases, and decorative elements. Moreover, steel can be easily manipulated through processes like welding, bending, or machining, allowing it to meet specific design requirements. Another noteworthy aspect is that steel demonstrates excellent resistance to corrosion, ensuring that lighting fixtures made from steel round bars can endure challenging environments and have a prolonged lifespan. In conclusion, the strength, adaptability, and ability to enhance the overall design aesthetic make steel round bars a popular choice in the production of lighting fixtures.

Q: Can steel round bars be used for making rebar?: Using steel round bars to make rebar is not possible. Rebar, also known as reinforcing bar, is purposely designed and produced with deformations or ribs on its surface to enhance the connection with concrete. These deformations provide improved grip and prevent slipping between the rebar and concrete, thereby enhancing the structural strength of a reinforced concrete structure. Conversely, steel round bars possess a smooth surface and do not have the required deformations, rendering them unsuitable for rebar purposes. It is crucial to utilize rebar that meets the necessary standards and specifications in order to guarantee the safety and longevity of the concrete structure.

Q: Can steel round bars be used for making valves or fittings?: Yes, steel round bars can be used for making valves or fittings. Steel round bars offer excellent strength, durability, and corrosion resistance, making them suitable for various applications in the manufacturing of valves and fittings. They can be easily machined, welded, and fabricated to meet specific design requirements, ensuring reliable and long-lasting performance in valve and fitting systems.

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