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: How do steel round bars resist corrosion?: Steel round bars resist corrosion due to the presence of a protective oxide layer on their surface, formed through the process of passivation. This oxide layer acts as a barrier, preventing the steel from coming into direct contact with corrosive substances, thereby inhibiting the oxidation reaction that leads to corrosion. Additionally, certain alloying elements, such as chromium, can be added to the steel composition to enhance its corrosion resistance properties.

Q: Can steel round bars be threaded?: Yes, steel round bars can be threaded. Threading is a common process used to create a helical ridge on the surface of a round bar, allowing it to be securely fastened to other components or fittings.

Q: How are steel round bars used in the construction of dams and reservoirs?: Due to their strength, durability, and versatility, steel round bars are essential components in the construction of dams and reservoirs. These bars, typically made of reinforced steel, play a vital role in reinforcing the concrete structures that make up dams and reservoirs. In dam construction, steel round bars are primarily used as reinforcement in concrete walls and foundations. Strategically placed within the concrete, these bars provide additional tensile strength, preventing cracking and ensuring the structural integrity of the dam. By withstanding the enormous pressure exerted by the water, the reinforcement helps prevent leaks or potential failures. Furthermore, steel round bars are utilized to strengthen the spillway gates and control structures of dams and reservoirs. These gates regulate the flow of water and prevent overflow during heavy rains or floods. By reinforcing these critical areas with steel round bars, engineers guarantee that the gates can endure the forces exerted by the flowing water, maintaining their functionality and preventing potential damage. In addition, steel round bars are used in the construction of penstocks, which are large pipes or conduits that transport water from reservoirs to turbines in hydroelectric power plants. These bars reinforce the penstocks, ensuring they can withstand the high pressure of the water as it flows through and powers the turbines. In conclusion, steel round bars are extensively applied in dam and reservoir construction to enhance the strength and durability of various structural components. Their ability to reinforce concrete walls, foundations, spillway gates, control structures, and penstocks makes them indispensable in ensuring the longevity and stability of these crucial water infrastructures.

Q: Are steel round bars suitable for electrical applications?: Depending on specific requirements and conditions, steel round bars may be a suitable choice for electrical applications. Steel is well-known for its excellent conductivity, strength, and durability, making it a popular option for various electrical uses. However, before using steel round bars in electrical applications, it is crucial to take into account several factors. Firstly, while steel is a decent conductor, it is not as efficient as materials like copper or aluminum. Therefore, utilizing steel in electrical applications may lead to higher resistance and energy loss compared to these more conductive alternatives. Moreover, steel round bars might be susceptible to corrosion, particularly in humid or corrosive environments. This corrosion can significantly impact the overall performance and lifespan of the electrical system. To mitigate this issue, proper insulation or protective coatings may be necessary to prevent corrosion and ensure the reliability of the electrical application. To summarize, although steel round bars possess conductivity, strength, and durability that make them suitable for electrical applications, it is crucial to consider factors such as conductivity, corrosion resistance, and overall system requirements before employing them.

Q: What are the advantages of using nickel-chromium-cobalt alloy steel round bars?: There are several advantages of using nickel-chromium-cobalt alloy steel round bars. Firstly, this type of alloy steel has excellent corrosion resistance properties. It can withstand extreme environments, such as high temperatures, humidity, and exposure to chemicals, without succumbing to rust or corrosion. This makes it ideal for applications in industries like aerospace, marine, and chemical processing, where durability and longevity are crucial. Secondly, nickel-chromium-cobalt alloy steel round bars possess exceptional strength and toughness. They have a high tensile strength and can withstand heavy loads and impacts without deforming or breaking. This makes them suitable for applications that require structural integrity and resistance to deformation, such as in the construction industry or in manufacturing heavy machinery. Moreover, this alloy steel exhibits excellent heat resistance. It can withstand elevated temperatures without losing its mechanical properties, making it ideal for applications that involve high-temperature environments, such as in power generation, oil and gas exploration, or furnace components. Additionally, nickel-chromium-cobalt alloy steel round bars offer good wear resistance. They can withstand abrasive conditions, such as friction and wear, without experiencing significant deterioration. This makes them suitable for applications like tooling, machining, and wear components, where durability and resistance to wear are critical. Lastly, nickel-chromium-cobalt alloy steel round bars are highly versatile. They can be easily machined, welded, and formed into various shapes, making them adaptable to a wide range of applications. Their versatility allows for customization and flexibility in design and manufacturing processes. In conclusion, the advantages of using nickel-chromium-cobalt alloy steel round bars include excellent corrosion resistance, high strength and toughness, heat resistance, good wear resistance, and versatility. These qualities make them a preferred choice for various industries, where reliability, durability, and performance are essential.

Q: What are the advantages of using aluminum-silicon alloy steel round bars?: One of the advantages of using aluminum-silicon alloy steel round bars is their high strength-to-weight ratio. This makes them lightweight yet robust, making them suitable for a wide range of applications where both strength and weight are important factors. Additionally, the alloy's excellent corrosion resistance properties make it highly durable and long-lasting, reducing maintenance and replacement costs. Another advantage is its good thermal conductivity, making it useful in applications that require efficient heat transfer. Overall, aluminum-silicon alloy steel round bars offer a combination of strength, lightness, corrosion resistance, and thermal conductivity, making them a versatile and advantageous material choice.

Q: What is the difference between a cold finished and a turned steel round bar?: A cold finished steel round bar and a turned steel round bar are both types of steel bars used in various industries for different applications. The main difference between the two lies in the manufacturing process and the resulting properties of the bars. A cold finished steel round bar is produced by cold drawing or cold rolling a hot rolled steel bar. This process involves passing the hot rolled bar through a series of dies at room temperature, which reduces its diameter and increases its length. The cold drawing process imparts specific mechanical properties to the steel, such as improved surface finish, dimensional accuracy, and increased strength. Cold finished steel bars have a smooth, shiny surface and are known for their close tolerances and uniformity in size and shape. They are commonly used in applications where precision and high-quality surface finish are essential, such as in the automotive, aerospace, and machining industries. On the other hand, a turned steel round bar is made by machining a hot rolled or cold finished bar on a lathe. The bar is clamped and rotated while a cutting tool removes material from its outer surface, creating the desired shape and dimensions. This turning process results in a bar with a rougher surface compared to a cold finished bar, but it allows for faster production and versatility in creating various shapes and sizes. Turned steel bars are often used in applications where the surface finish is not critical and machining operations are required, such as in the construction, engineering, and manufacturing industries. In summary, the difference between a cold finished and a turned steel round bar lies in the manufacturing process and the resulting properties. Cold finished bars are produced through cold drawing or cold rolling, resulting in improved dimensional accuracy, surface finish, and strength. Turned bars are machined on a lathe, offering versatility in shape and size but with a rougher surface finish. The choice between the two depends on the specific requirements of the application, including tolerance, surface finish, strength, and machinability.

Q: Can steel round bars be used in the production of couplings?: Indeed, couplings can be produced using steel round bars. These bars are widely employed across various industrial sectors owing to their robustness, endurance, and versatility. In terms of coupling manufacturing, steel round bars furnish the essential structural integrity and dependability demanded by such components. They can be manipulated, forged, or molded to conform to specific coupling designs and specifications. Additionally, steel round bars boast exceptional resistance against corrosion, a pivotal factor in ensuring the longevity and operational efficacy of couplings in diverse settings. All in all, steel round bars serve as an appropriate material selection for coupling production, guaranteeing the requisite strength and durability necessary for seamless and trustworthy coupling operations.

Q: What are the advantages of using maraging steel round bars?: Using maraging steel round bars in various applications offers several benefits. Firstly, these bars possess an impressive strength-to-weight ratio, making them ideal for situations where strength is crucial. They can withstand high stress and load-bearing conditions without deforming or failing, ensuring structural integrity. Secondly, maraging steel round bars exhibit exceptional toughness, enabling them to absorb significant amounts of energy before fracturing. This toughness makes them highly resistant to cracking or breaking, even under extreme conditions, enhancing their durability and reliability. Additionally, maraging steel round bars are known for their outstanding corrosion resistance. Unlike other types of steel, they are less prone to rust and oxidation, making them suitable for use in harsh environments or where exposure to moisture or chemicals is a concern. This corrosion resistance helps extend the lifespan of the bars and reduces maintenance costs. Furthermore, maraging steel round bars are relatively easy to machine, despite their high strength and hardness. They can be easily shaped, drilled, and cut into different forms and sizes, allowing for versatile applications across various industries. This ease of machining saves time and effort during the manufacturing process. Moreover, maraging steel round bars have excellent heat treatability, meaning they can be hardened and tempered to further enhance their mechanical properties. This flexibility in heat treatment allows for customization to meet specific project requirements, such as achieving desired hardness levels or improving characteristics like wear resistance or toughness. Lastly, maraging steel round bars are widely used in the aerospace and defense industries due to their exceptional strength, toughness, and corrosion resistance. They are commonly utilized in the manufacturing of critical components such as landing gear, missile casings, and aircraft structures, where reliability and performance are paramount. In conclusion, the advantages of using maraging steel round bars include high strength, superior toughness, corrosion resistance, machinability, heat treatability, and suitability for aerospace and defense applications. These properties make them the preferred choice for demanding industries, ensuring optimal performance and longevity in critical applications.

Q: How are steel round bars used in the construction of airports and runways?: Steel round bars are commonly used in the construction of airports and runways for various purposes. They are primarily used to reinforce the concrete structures, such as the foundation, columns, beams, and slabs. The round bars provide strength and durability to the concrete, ensuring that it can withstand heavy loads and resist cracking or collapsing. Additionally, steel round bars are also used in the construction of drainage systems, fencing, and other infrastructure components within airports and runways.

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