SAE 1020 Round Steel Bars Special Steel System 1

SAE 1020 Round Steel Bars Special Steel

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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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Products description details

1. Chemical Composition (%)

C	Si	Mn	Cr	Ni	Cu	P	S
0.17-0.23	0.17-0.37	0.35-0.65	≤0.25	≤0.30	≤0.25	≤0.035	≤0.035

2. Mechanical Properties

Tensile strength	Yield strength	Elongation rate	Contractibility rate	Hardness(HB)
≥410MPa	≥245MPa	≥25%	≥55%	≤156(without heat treatment)

3. Standard

GB:20, AISI: 1020, JIS: S20C

4. Specification

Dia: 8mm-480mm or according to your requirements

Length: 1m-12mm or according to your requirements

5. Delivery Condition

Hot rolled, forged, QT heat treatment and normalizing

6. Payment term

T/T, L/C or we can negotiate.

7. Delivery time

20days after the order confirmed

8. Characteristics

1) The strength and hardness of S20C/ 1020/ 20 is higher than that of S15C/ 1015/ 15.

2) Good plasticity and weldability.

3) Good toughness after hot rolling and normalization.

9. Application

High-quality carbon structural steel/S20C/ 1020/ 20

S20C structural carbon steel bar /1020 /20 can be used to be manufactured medium or small carburization or nitrocarburizing parts and press forging parts, such as lever shaft, selector fork of speed changing box, gear, heavy mechanical lever and shackle, etc.

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SAE 1020 Round Steel Bars Special Steel

Why choose us?

(1) The leading exporter in China special steel industry.

(2) Large stocks for various sizes, fast delivery date.

(3) Good business relationship with China famous factories.

(4) More than 7 years steel exporting experience.

(5) Good after-sales service guarantee.

Q: What are the main advantages of using special steel in the medical field?: The main advantages of using special steel in the medical field are its exceptional strength, corrosion resistance, and biocompatibility. These properties make it suitable for manufacturing surgical instruments, implants, and medical devices that require high durability, hygiene, and compatibility with the human body.

Q: What are the different types of alloy steel?: There are several different types of alloy steel, including stainless steel, tool steel, high-strength low-alloy steel, and maraging steel.

Q: How is special steel used in the manufacturing of machinery?: Special steel is an essential component in the manufacturing of machinery due to its unique properties that make it highly suitable for this purpose. Special steel refers to a category of steel alloys that have been specifically designed and developed to possess exceptional strength, durability, and resistance to wear and tear. In the manufacturing of machinery, special steel is commonly used in various applications. One of the primary uses is in the production of machine components that require high strength and toughness, such as gears, shafts, bearings, and fasteners. These components are subjected to heavy loads, high temperatures, and harsh operating conditions, and therefore, they need to withstand these stresses without failure or deformation. Special steel provides the necessary strength and toughness to ensure the longevity and reliability of these machine parts. Additionally, special steel is also utilized in the manufacturing of cutting tools and dies. Cutting tools, such as drills, milling cutters, and lathe tools, need to have excellent hardness and wear resistance to withstand the forces and abrasion encountered during the machining process. Dies, on the other hand, are used to shape or form materials, and they require high strength and hardness to withstand the repetitive pressure and deformation. Special steel provides the necessary properties to enhance the performance and lifespan of these cutting tools and dies. Furthermore, special steel is often utilized in the construction of machine frames and structural components. The strength and rigidity of special steel make it ideal for supporting heavy loads and maintaining the overall stability of the machinery. By using special steel in the construction of machine frames, manufacturers can ensure the structural integrity and durability of the machinery, which is crucial for safe and efficient operation. Overall, special steel plays a vital role in the manufacturing of machinery by providing the strength, durability, and wear resistance necessary for critical machine components, cutting tools, and structural elements. Its unique properties make it indispensable in the production of high-performance machinery that can withstand the demanding conditions of various industries.

Q: What are the specific requirements for special steel used in the automotive piston industry?: The specific requirements for special steel used in the automotive piston industry include high strength and durability, excellent wear resistance, good thermal conductivity, and the ability to withstand high temperatures and pressures. Additionally, the steel should have low thermal expansion and good machinability for ease of manufacturing and assembly.

Q: How does aluminum contribute to the properties of special steel?: Aluminum contributes to the properties of special steel by improving its strength, corrosion resistance, and heat resistance. It forms a thin layer of aluminum oxide on the surface, which acts as a protective barrier against rust and other environmental factors. Additionally, aluminum helps in refining the grain structure of the steel, making it stronger and more durable. It also enhances the steel's ability to withstand high temperatures, making it suitable for various applications in industries like aerospace, automotive, and construction.

Q: What are the different methods of surface shot blasting for special steel?: There are several different methods of surface shot blasting that can be used for special steel. Some of the most common methods include: 1. Wheel blasting: This method involves using a wheel with abrasive particles to blast the surface of the special steel. The wheel spins rapidly and throws the abrasive particles onto the steel, removing any contaminants or imperfections. 2. Air blasting: In this method, compressed air is used to propel abrasive particles onto the surface of the special steel. The high-speed impact of the particles helps to clean and prepare the surface for further treatment or coating. 3. Wet blasting: This technique involves mixing abrasive particles with water and then spraying the mixture onto the surface of the special steel. The water helps to control the dust and heat generated during the blasting process, making it suitable for sensitive or delicate steel surfaces. 4. Vacuum blasting: Vacuum blasting combines the use of abrasive particles with a vacuum system to remove both the particles and the contaminants from the surface of the special steel. This method is particularly useful for removing paint or coatings from the steel. 5. Shot peening: Shot peening is a specialized form of shot blasting that is used to enhance the strength and fatigue resistance of the special steel. It involves bombarding the surface with small spherical particles, which create compressive stresses that improve the steel's durability. Each of these methods has its own advantages and is suitable for different types of special steel and surface conditions. The choice of method will depend on factors such as the desired surface finish, the level of contamination, and the specific requirements of the steel application.

Q: How does special steel perform in electrical applications?: Special steel, also known as electrical steel, is specifically designed and manufactured to meet the unique requirements of electrical applications. It exhibits excellent magnetic properties, making it highly suitable for use in electrical machines and devices. One of the key characteristics of special steel is its low electrical resistivity, which allows for efficient current flow and minimizes energy losses in electrical circuits. This low resistivity is achieved by carefully controlling the composition and microstructure of the steel. Additionally, special steel possesses a high magnetic permeability, which means it can easily be magnetized and demagnetized. This property is essential for the efficient operation of electrical machines, such as transformers, motors, and generators. Furthermore, special steel has a low coercivity, which means it requires relatively low levels of magnetic field strength to magnetize or demagnetize it. This property is beneficial in applications where rapid and precise magnetic switching is required, such as in electric transformers. Special steel also exhibits low hysteresis loss, which refers to the energy dissipated as heat during magnetization and demagnetization cycles. This characteristic ensures minimal energy losses in electrical devices, leading to improved overall efficiency. In summary, special steel performs exceptionally well in electrical applications due to its low electrical resistivity, high magnetic permeability, low coercivity, and low hysteresis loss. These properties make it an ideal choice for a wide range of electrical machines and devices, contributing to their efficiency and reliability.

Q: What are the different corrosion-resistant grades of special steel?: There are several corrosion-resistant grades of special steel that are commonly used in various industries. These grades are specifically designed to resist corrosion and maintain their structural integrity in harsh environments. Some of the different corrosion-resistant grades of special steel are: 1. Stainless Steel: Stainless steel is one of the most popular corrosion-resistant grades and is widely used in various applications. It contains a minimum of 10.5% chromium, which forms a protective passive oxide layer on the surface, preventing corrosion. There are different types of stainless steel, such as austenitic, ferritic, and martensitic, each with varying levels of corrosion resistance. 2. Duplex Stainless Steel: Duplex stainless steel is a combination of austenitic and ferritic stainless steels, offering superior corrosion resistance compared to conventional stainless steel grades. It has a high chromium content, along with other alloying elements like molybdenum and nitrogen, which enhance its resistance to pitting, crevice corrosion, and stress corrosion cracking. 3. Super Duplex Stainless Steel: Super duplex stainless steel is an even higher corrosion-resistant grade than duplex stainless steel. It has a higher chromium and molybdenum content, providing excellent resistance to highly corrosive environments, such as seawater, chemicals, and acids. Super duplex stainless steel is commonly used in offshore oil and gas industries. 4. Nickel Alloys: Nickel alloys, such as Inconel and Hastelloy, are highly corrosion-resistant grades of special steel. These alloys have a high nickel content, along with other elements like chromium and molybdenum, which make them resistant to a wide range of corrosive environments, including high-temperature and acidic conditions. 5. Titanium Alloys: Titanium alloys are known for their exceptional corrosion resistance, especially in aggressive media, such as seawater and chemical processing environments. These alloys have a low density, high strength, and superior resistance to pitting, crevice corrosion, and stress corrosion cracking. 6. Aluminum Alloys: Certain aluminum alloys, such as 5052 and 6061, are also corrosion-resistant grades of special steel. These alloys have a protective oxide layer that forms on the surface, providing excellent resistance to atmospheric corrosion. Aluminum alloys are commonly used in marine and aerospace applications. These are just a few examples of the different corrosion-resistant grades of special steel. The selection of the appropriate grade depends on the specific corrosive environment, temperature, mechanical properties required, and other factors related to the intended application.

Q: How long does special steel typically last in various applications?: The lifespan of special steel in various applications can vary depending on several factors. Special steel is known for its exceptional strength, durability, and resistance to corrosion, making it suitable for a wide range of applications. However, the actual lifespan of special steel will depend on the specific application, maintenance practices, and environmental conditions it is exposed to. In general, special steel can last for several decades or even longer when used in industries such as construction, automotive, aerospace, and manufacturing. For instance, in building structures, special steel can last for 50 to 100 years, thanks to its robustness and ability to withstand extreme loads and weather conditions. In automotive applications, special steel components like engine parts, suspension systems, and body frames can have a lifespan of 15 to 30 years, given that they are properly maintained and not subjected to excessive wear and tear. When it comes to the aerospace industry, special steel is commonly used in critical components like turbine blades, landing gears, and fuselage structures. These parts undergo rigorous testing and inspection procedures and are designed to last for decades, typically around 30 to 50 years, before requiring replacement or refurbishment. In manufacturing processes, special steel tools and dies can have a lifespan ranging from a few years to several decades, depending on the intensity of use, the material being processed, and the maintenance practices employed. Proper lubrication, cooling, and regular maintenance can significantly extend the lifespan of these tools. It is important to note that the lifespan of special steel can be adversely affected by factors such as exposure to harsh chemicals, high temperatures, aggressive environments, or inadequate maintenance. Therefore, regular inspections, maintenance, and adherence to recommended usage guidelines are crucial in ensuring the longevity of special steel in various applications.

Q: How does special steel contribute to the manufacturing of precision instruments?: Special steel plays a crucial role in the manufacturing of precision instruments. Its unique characteristics and properties make it an ideal material choice for these applications. Firstly, special steel offers exceptional strength and durability, allowing precision instruments to withstand extreme conditions, heavy loads, and repetitive use. This ensures the longevity and reliability of these instruments, which is vital in critical industries such as aerospace, automotive, and medical. Moreover, special steel has excellent corrosion resistance, preventing the instruments from deteriorating over time. This is especially important for precision instruments that are exposed to various elements, chemicals, or moisture during their operation or storage. Special steel also provides high thermal stability, enabling precision instruments to maintain their accuracy in different temperature environments. This is vital for instruments that are used in industries where temperature fluctuations can affect their performance, such as laboratories or manufacturing plants. Additionally, special steel can be customized and tailored to meet specific design requirements. It can be easily machined, formed, or welded into intricate shapes and parts, allowing manufacturers to create precision instruments with complex geometries and tight tolerances. This level of precision is crucial for instruments used in fields like metrology, microscopy, or nanotechnology. Furthermore, special steel offers excellent magnetic properties, which can be advantageous for precision instruments that rely on magnetic fields for their operation. This includes instruments like magnetic resonance imaging (MRI) machines, compasses, or magnetometers. In conclusion, special steel contributes significantly to the manufacturing of precision instruments by providing strength, durability, corrosion resistance, thermal stability, customization options, and magnetic properties. These characteristics ensure the performance, accuracy, and longevity of precision instruments, making them indispensable in various industries.

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