SAE1045 4140 4340 8620 8640 Alloy Steel Bar

SAE1045 4140 4340 8620 8640 Alloy Steel Bar

Ref Price:: $300.00 - 500.00 / m.t.

Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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The details of our Steel

1. Produce Standard: as the GB, AISI, ASTM, SAE, EN, BS, DIN, JIS Industry Standard

2. Produce processes: Smelt Iron -EAF smelt Billet - ESR smelt Billet -Hot rolled or forged get the steel round bar and plate

3. Heat treatment:Normalized / Annealed / Quenched+Tempered

4. Quality assurance:

All order we can received Third party inspection, You can let SGS, BV,.. and others test company test and inspect our products before Goods shipping.

Product information

Specification of S45C steel
Round bar	Diameter(mm)	Length (mm)
	100~300	2000~5800
Plate	Thickness(mm)	Width (mm)	Length (mm)
	20~70	105~610	2000~5800
The specification can be customised!

Heat treatment

1.Quench:1000-1040`C via 600`C and 850`C, preheating oil or wind cooling

2.Temper temperature should be higher than working temperature in order to stabilize the working size of mold

3.Heat up to 650°C of average temperature in order to eliminate the machined stress, 500 °c air cooling after electric cooker cooling

4.Tempering, 800-850 °c ,slow cooling after diathermia

5. Melting Process of SKD61 steel rod

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SAE1045 4140 4340 8620 8640 Alloy Steel Bar

Q:How does special steel perform in oil and gas applications?: Special steel is highly desirable and widely used in oil and gas applications due to its exceptional performance and superior properties. Special steel exhibits excellent resistance to corrosion, which is crucial in environments where oil and gas are present. This resistance to corrosion helps prevent equipment failure and ensures the longevity and reliability of the components. Moreover, special steel possesses high strength and durability, making it suitable for withstanding extreme conditions, such as high pressure and temperature. This strength allows the steel to withstand the demanding and harsh environments that oil and gas applications often present. Additionally, special steel can retain its mechanical properties even at elevated temperatures, providing stability and reliability in these challenging conditions. Another significant advantage of special steel is its excellent weldability. This property allows for easy fabrication and assembly of components, reducing production time and costs. It also ensures the integrity of the structures and equipment used in oil and gas applications. Furthermore, special steel offers exceptional resistance to fatigue and wear, which are common concerns in oil and gas operations. The ability of special steel to withstand cyclic loading and abrasive conditions ensures the longevity and reliability of the components, reducing maintenance and replacement costs. Overall, special steel performs exceptionally well in oil and gas applications due to its corrosion resistance, high strength, durability, weldability, and resistance to fatigue and wear. Its superior properties make it a preferred choice for critical components, ensuring the efficiency, safety, and reliability of oil and gas operations.

Q:What is the purpose of annealing in special steel production?: The purpose of annealing in special steel production is to improve the steel's mechanical properties and reduce its internal stresses. This process involves heating the steel to a specific temperature and holding it at that temperature for a certain period of time, followed by controlled cooling. Annealing helps to enhance the steel's ductility, toughness, and machinability, making it easier to work with and ensuring consistent and reliable performance in various applications.

Q:What are the different methods for improving the magnetic properties of special steel?: There are several methods that can be employed to improve the magnetic properties of special steel. 1. Heat Treatment: One common method is heat treatment, which involves subjecting the steel to specific heating and cooling processes. This can help to alter the atomic structure of the steel and enhance its magnetic properties. For example, annealing the steel at high temperatures followed by slow cooling can lead to the formation of a fine-grained microstructure, resulting in improved magnetic properties. 2. Alloying: Another approach is to add certain alloying elements to the steel. For instance, the addition of small amounts of elements like nickel, cobalt, or aluminum can significantly enhance the magnetic characteristics of the steel. These alloying elements can help to increase the saturation magnetization and improve the coercivity of the material. 3. Cold Working: Cold working, also known as cold deformation, involves subjecting the steel to mechanical stress at low temperatures. This process can cause the formation of dislocations and defects within the crystal structure of the steel, which can improve its magnetic properties. Cold working can lead to increased magnetization, improved permeability, and reduced hysteresis losses. 4. Grain Orientation: Another method is to align the grains of the steel in a specific direction. This can be achieved through processes like hot rolling or magnetic annealing. By aligning the grains, the steel can exhibit anisotropic magnetic properties, meaning it will have different magnetic characteristics depending on the direction of the applied magnetic field. 5. Surface Treatments: Surface treatments can also be employed to enhance the magnetic properties of special steel. Coatings like electroplating, electroless plating, or chemical vapor deposition can be used to modify the surface of the steel, leading to improved magnetic performance. These treatments can help to reduce eddy current losses, enhance corrosion resistance, and increase the magnetic permeability of the material. It is important to note that the choice of method for improving the magnetic properties of special steel depends on the specific requirements and desired characteristics. Each method has its advantages and limitations, and the selection should be made based on factors such as cost, feasibility, and the desired magnetic performance.

Q:How does special steel contribute to the construction sector?: Special steel plays a crucial role in the construction sector by offering a wide range of benefits that contribute to the overall quality, durability, and safety of structures. Firstly, special steel possesses exceptional strength and toughness, making it an ideal material for constructing high-rise buildings, bridges, and other infrastructure projects. Its high tensile strength allows for the creation of lighter and more slender structures, reducing material costs and enabling architects to design innovative and aesthetically pleasing buildings. Moreover, special steel is highly resistant to corrosion, which is particularly important in construction projects located in harsh environments, such as coastal areas or industrial zones. This resistance ensures that structures built with special steel have a longer lifespan and require less maintenance, resulting in significant cost savings over time. Additionally, its resistance to fire and extreme temperatures makes it an essential material for fire-resistant structures and critical components in buildings, ensuring the safety of occupants. Special steel also offers excellent ductility and weldability, allowing for seamless integration with other construction materials and facilitating efficient assembly processes. Its versatility enables it to be used in various structural elements, such as beams, columns, and reinforcement bars, providing stability and structural integrity to buildings, as well as improving seismic performance. Furthermore, the use of special steel in construction aligns with sustainability goals. It is a recyclable material that can be reused without compromising its properties, reducing the environmental impact of the construction sector. Furthermore, its lighter weight compared to traditional materials minimizes the carbon footprint associated with transportation and installation. In summary, special steel contributes significantly to the construction sector by providing strength, durability, fire resistance, corrosion resistance, and versatility. Its use enables the construction of safer, more cost-effective, and environmentally-friendly structures, thereby enhancing the overall quality and sustainability of the built environment.

Q:What are the properties of high-temperature stainless steel?: High-temperature stainless steel possesses excellent heat resistance, corrosion resistance, and mechanical strength even at elevated temperatures. It retains its structural integrity and is capable of withstanding extreme thermal conditions, making it suitable for various high-temperature applications such as in aerospace, power generation, and chemical industries.

Q:What are the different types of high-speed steel?: The different types of high-speed steel include M1, M2, M3, M4, M35, M42, and T1.

Q:How does special steel compare to other materials, such as aluminum or titanium?: Special steel is known for its exceptional strength, durability, and resistance to wear and tear, making it superior to materials like aluminum or titanium in various applications. While aluminum is lightweight, it lacks the same level of strength and toughness as special steel. Titanium, on the other hand, offers comparable strength but is significantly more expensive. Special steel strikes a balance between strength, cost-effectiveness, and versatility, making it a preferred choice in many industries.

Q:How does special steel contribute to the formability of products?: Special steel, which is also known as alloy steel, plays a vital role in enhancing the formability of products. Various industries, including automotive, aerospace, and construction, find special steel to be an ideal choice due to its unique properties and composition. One way in which special steel contributes to product formability is through its exceptional strength and durability. Engineered to have a higher tensile strength compared to regular steel, special steel can undergo significant deformation without breaking or cracking. This characteristic allows manufacturers to shape and mold the steel into intricate and complex designs, resulting in products with improved formability. Moreover, special steel offers excellent resistance to deformation, specifically elastic deformation. This means that even after enduring significant stress or strain, the steel can return to its original shape, minimizing the risk of permanent deformation. Such a feature proves advantageous in applications where products need to withstand repeated bending or shaping without compromising their structural integrity. Additionally, special steel often contains specific alloying elements like chromium, nickel, or molybdenum, which further enhance its formability. These alloying elements improve the steel's ability to be easily formed and manipulated, making it more ductile and minimizing the chances of cracking during the forming process. Furthermore, special steel can undergo heat treatment to modify its mechanical properties and enhance its formability. Annealing or quenching are some of the heat treatment processes that can make the steel more malleable, allowing for easy shaping and forming into desired products. In conclusion, special steel plays a critical role in enhancing product formability due to its exceptional strength, resistance to deformation, inclusion of alloying elements, and heat-treatability. These properties enable manufacturers to create products with intricate designs and complex shapes, fulfilling the diverse needs of various industries while ensuring durability and structural integrity.

Q:How does heat treatment affect the properties of special steel?: Heat treatment can significantly impact the properties of special steel. The process involves heating and cooling the steel in a controlled manner, which alters its microstructure, resulting in changes to its hardness, strength, toughness, and ductility. By carefully selecting the temperature and duration of heat treatment, desired properties such as improved hardness, increased strength, and enhanced wear resistance can be achieved. Additionally, heat treatment can also relieve internal stresses, enhance machinability, and improve dimensional stability of special steel.

Q:What are the main characteristics of alloy steel?: Alloy steel, which is produced by incorporating specific elements like chromium, nickel, or molybdenum into iron, possesses distinct properties and qualities. Some key features of alloy steel are as follows: 1. Remarkable strength: Alloy steel is renowned for its exceptional strength. The introduction of alloying elements enhances its capacity to endure high pressures and heavy loads, making it an ideal choice for applications necessitating a robust and long-lasting material. 2. Enhanced hardness: Alloy steel is also recognized for its hardness, surpassing that of regular carbon steel. This attribute renders it resistant to wear, abrasion, and deformation, making it suitable for applications that require resistance to impact or wear, such as the production of cutting tools or machinery components. 3. Resistance to corrosion: Depending on the specific alloying elements employed, alloy steel can display excellent resistance to corrosion. For instance, the addition of chromium is a common practice to create stainless steel, which exhibits high resistance to rust and corrosion. This attribute positions alloy steel as a preferred material in industries where exposure to moisture or corrosive environments is prevalent. 4. Heat endurance: Alloy steel possesses the ability to withstand high temperatures without compromising its strength or structural integrity. The inclusion of elements like nickel, molybdenum, or vanadium augments its resistance to thermal expansion, oxidation, and softening at elevated temperatures. This quality renders alloy steel suitable for applications in the aerospace, automotive, and power generation sectors. 5. Versatility: Alloy steel is a versatile material that can be readily tailored to meet specific requirements. Manufacturers can create alloy steel with a broad range of properties, such as improved ductility, toughness, or electrical conductivity, by modifying the composition and proportions of alloying elements. This adaptability permits the utilization of alloy steel in diverse industries, encompassing construction, manufacturing, and engineering. In conclusion, alloy steel exhibits high strength, hardness, corrosion resistance, heat endurance, and versatility. These characteristics establish alloy steel as the preferred choice for a wide array of applications that demand a sturdy, durable, and dependable material.

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