Carbon Steel S20C-B/S45C-B Steel Round Bar

Carbon Steel S20C-B/S45C-B Steel Round Bar System 1

Carbon Steel S20C-B/S45C-B Steel Round Bar

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Specification

Type:

Carbon Steel

Shape:

Steel Round Bar

Carbon Steel S20C-B/S45C-B Steel Round Bar

Product Information:

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

Product Overviews:

Product Name	Typical Grades	Diameter(mm)	Standard adopted
Carbon Steel	20 (1020/S20C/C22)	Ø16-Ø300	GB/SAE/JIS/DIN
	40 (1040/S40C/C40)
	45 (1045/S45C/C45)
Bearing Steel	GCr9 (51100/SUJ1)	Ø12-Ø250
	GCr15 (52100/SUJ2/100Gr6)
	GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel	20Cr (5120/SCr420H/20Cr4)	Ø12-Ø250
	40Cr (5140/SCr440/41Cr4)
	42CrMo(4140/SCM440/42CrMo4)
Gear Steel	20CrNiMo	Ø16-Ø600
	20CrMn(5115/SMnC420/20MnCr5)
	20CrNiMo(8620/SNCM220/20CrMiMo2)

Product Show:

Carbon Steel S20C-B/S45C-B Steel Round Bar

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Q: What are the main alloying elements in special steel?: The specific type or grade of special steel can determine the main alloying elements present. Chromium, nickel, molybdenum, vanadium, tungsten, and cobalt are common alloying elements in special steel. These elements are incorporated into the steel to improve its properties, including corrosion resistance, strength, hardness, and heat resistance. Each alloying element has a distinct impact on the steel, enabling the development of specialized steel grades for diverse applications in industries like aerospace, automotive, oil and gas, and construction.

Q: How does special steel perform in high-pressure and high-temperature environments?: Special steel performs exceptionally well in high-pressure and high-temperature environments due to its unique composition and properties. It exhibits excellent strength, toughness, and resistance to corrosion, making it ideal for withstanding extreme conditions. Additionally, special steel can maintain its mechanical properties, structural integrity, and dimensional stability even under intense heat and pressure, ensuring reliable performance and longevity in such environments.

Q: How does special steel contribute to the manufacturing of bearings?: Special steel plays a crucial role in the manufacturing of bearings due to its unique properties and characteristics. Bearings are mechanical components that facilitate smooth rotation or movement between two surfaces. Special steel, also known as bearing steel, is specifically designed to meet the demanding requirements of bearing applications. Firstly, special steel offers exceptional hardness, which is crucial for bearings to withstand heavy loads and high-speed rotations. The hardness of the steel allows the bearing to resist wear and deformation, ensuring a longer lifespan and reliable performance. Secondly, special steel possesses excellent corrosion resistance. Bearings often operate in harsh environments where they are exposed to moisture, chemicals, and other corrosive substances. The special steel used in bearing manufacturing effectively prevents rust and deterioration, ensuring the bearings can withstand these challenging conditions. Furthermore, special steel has superior heat resistance and thermal stability. Bearings can generate significant heat during operation due to friction and pressure. The special steel used in their production can withstand high temperatures without losing its structural integrity, preventing premature failure and ensuring consistent performance. Additionally, special steel offers exceptional strength and toughness. These properties are vital for bearings to withstand the intense forces and impacts they experience during operation. The high strength and toughness of the steel prevent fractures, breakages, and other forms of damage, contributing to the overall durability and reliability of the bearings. Lastly, special steel has excellent dimensional stability and machinability. This allows for precise manufacturing and shaping of the bearing components, ensuring accurate dimensions and smooth surfaces. The dimensional stability of the steel ensures that the bearings can maintain their proper fit and alignment within the machinery, minimizing any potential issues or malfunctions. In conclusion, special steel is essential in the manufacturing of bearings due to its hardness, corrosion resistance, heat resistance, strength, toughness, dimensional stability, and machinability. These properties enable bearings to withstand heavy loads, high speeds, harsh environments, and intense forces, ensuring reliable and efficient operation in a wide range of applications.

Q: How does special steel withstand high temperatures?: Special steel is able to withstand high temperatures due to its unique composition and manufacturing process. It is typically alloyed with elements such as chromium, nickel, and molybdenum, which enhance its heat resistance properties. These alloying elements form stable oxides on the surface of the steel, creating a protective layer that prevents oxidation and corrosion at high temperatures. Additionally, special steel undergoes heat treatment processes like quenching and tempering, which further enhance its strength and ability to retain its structural integrity under extreme heat conditions.

Q: What are the different methods for surface hardening special steel?: Surface hardening special steel can be achieved through various methods, each with distinct advantages and applications. Here are some commonly utilized techniques: 1. Carburizing: By subjecting the steel to a carbon-rich environment, either through gas or liquid mediums, the surface is heated. This leads to carbon atoms diffusing into the steel, creating a high-carbon layer and subsequently increasing its hardness. Carburizing is particularly suitable for parts with complex shapes, ensuring excellent wear resistance. 2. Nitriding: This method involves exposing the steel to atmospheres rich in nitrogen at elevated temperatures. Nitrogen atoms infiltrate the steel's surface, forming nitrides that significantly enhance hardness and wear resistance. Nitriding is often employed for parts requiring high fatigue strength and resistance against galling and fretting. 3. Induction hardening: Rapidly heating the steel's surface using high-frequency alternating currents characterizes induction hardening. This localized heating is followed by quenching, resulting in the creation of a hardened layer. Induction hardening is ideal for parts with localized wear areas or when specific regions necessitate hardening. 4. Flame hardening: Steel surfaces are heated to high temperatures using an oxy-fuel flame and then swiftly quenched in flame hardening. This technique is suitable for large and heavy parts that require deep hardening. Flame hardening provides both good wear resistance and toughness. 5. Laser hardening: Laser hardening is a precise and localized technique for surface hardening. The steel's surface is heated using a laser beam and subsequently quenched. This method offers high flexibility and control, making it ideal for complex geometries and small areas where hardness improvement is required. 6. Carbonitriding: By combining carburizing and nitriding processes, carbonitriding exposes the steel to an atmosphere containing both carbon and nitrogen. This results in the formation of a compound layer with enhanced hardness and wear resistance. Carbonitriding finds common usage in parts requiring a balance of hardness, toughness, and wear resistance. It should be noted that the choice of the appropriate surface hardening method depends on factors such as the specific steel composition, desired depth of hardness, part geometry, intended application, and cost considerations.

Q: How does special steel perform in automotive applications?: Special steel performs exceptionally well in automotive applications due to its unique properties and characteristics. It offers superior strength, durability, and resistance to wear and corrosion, making it highly suitable for critical components such as engine parts, chassis, and suspension systems. Special steel also enables the production of lightweight designs, enhancing fuel efficiency and reducing emissions. Additionally, its high heat resistance and thermal conductivity contribute to improved performance and safety in extreme conditions. Overall, the use of special steel in automotive applications ensures enhanced reliability, performance, and longevity of vehicles.

Q: How is nitriding steel used in surface hardening processes?: Nitriding steel is used in surface hardening processes by introducing nitrogen into the surface of the steel, resulting in the formation of a hard and wear-resistant layer. This process enhances the surface properties of the steel, such as increased hardness, improved wear resistance, and improved corrosion resistance. Nitriding steel is commonly used in applications where high surface hardness and durability are required, such as in automotive components, industrial machinery, and tools.

Q: How does special steel contribute to the hardness of products?: Special steel contributes to the hardness of products through its unique composition and manufacturing process. It contains alloying elements such as chromium, tungsten, and manganese, which enhance its strength and resistance to wear and tear. The controlled heat treatment during production further refines the steel's microstructure, resulting in increased hardness. This hardness enables special steel to withstand high pressures, impacts, and abrasive forces, making it ideal for applications where durability and strength are crucial, such as in tools, machinery, and construction materials.

Q: What are the specific requirements for special steel used in the oil and gas pipeline industry?: The specific requirements for special steel used in the oil and gas pipeline industry are dictated by the harsh operating conditions and the need for high performance and reliability. Some of the key requirements include: 1. Corrosion resistance: Special steel used in the oil and gas pipeline industry must possess excellent resistance to corrosion, as pipelines are exposed to various corrosive elements such as moisture, gases, and chemicals. This helps to prevent the degradation or failure of the pipeline due to corrosion. 2. High strength: The steel used in pipelines must have high tensile strength to withstand the high pressure and stress that it experiences during transportation of oil and gas. This ensures the pipeline's structural integrity and prevents leaks or bursts. 3. Toughness and impact resistance: The steel must be able to absorb energy and resist fracture when subjected to sudden impact or external forces. This is crucial for maintaining pipeline integrity and preventing accidents or ruptures. 4. Low temperature toughness: As pipelines often operate in cold environments, the steel must exhibit excellent low-temperature toughness to prevent brittle fracture. This ensures that the pipeline remains ductile and resistant to failure even at extremely low temperatures. 5. Weldability: Special steel used in pipelines should be easily weldable to facilitate the construction and repair of pipelines. Good weldability ensures strong and reliable joints that can withstand the stress and pressure during operation. 6. Resistance to hydrogen-induced cracking: Steel used in the oil and gas pipeline industry should have high resistance to hydrogen-induced cracking (HIC) and sulfide stress cracking (SSC). These types of cracks can occur when hydrogen or sulfide ions penetrate the steel, leading to catastrophic failure. Resistance to these types of cracking is crucial for pipeline safety. 7. Compliance with industry standards: Special steel used in the oil and gas pipeline industry must meet specific industry standards and regulations. These standards ensure that the steel meets the required mechanical properties, chemical composition, and manufacturing processes necessary for safe and reliable pipeline operation. Overall, the specific requirements for special steel used in the oil and gas pipeline industry are aimed at ensuring corrosion resistance, high strength, toughness, low-temperature performance, weldability, resistance to cracking, and compliance with industry standards. These requirements are essential for maintaining the integrity and safety of oil and gas pipelines.

Q: How does special steel perform under extreme temperatures?: Special steel is specifically designed to perform well under extreme temperatures. It exhibits excellent strength, hardness, and resistance to heat, making it highly suitable for applications that involve extreme heat or cold. At high temperatures, special steel maintains its structural integrity, which means it does not undergo significant deformation or loss of strength. It retains its hardness and dimensional stability, ensuring that it can withstand the extreme conditions without compromising its performance. Special steel also demonstrates exceptional resistance to thermal expansion and contraction, which is crucial when exposed to extreme temperature changes. This property allows the steel to expand and contract uniformly, minimizing the risk of cracking or other forms of damage. Moreover, special steel possesses excellent heat resistance, enabling it to retain its mechanical properties even at elevated temperatures. It exhibits high creep resistance, which is the ability to resist deformation under constant stress at high temperatures. This ensures that the steel can withstand prolonged exposure to extreme heat without experiencing failure or degradation. In addition to its impressive performance at high temperatures, special steel also performs well under extremely low temperatures. It maintains its toughness and ductility, with minimal risk of embrittlement or cracking. This makes it suitable for applications in cryogenic environments, such as in the aerospace or medical industries. Overall, special steel is designed to excel under extreme temperatures, offering exceptional strength, hardness, and resistance to heat. Its ability to maintain its structural integrity, resist thermal expansion and contraction, and withstand high or low temperatures makes it a reliable choice for various demanding applications.

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