Special Steel Carbon Steel Round Bar S20C AISI 1020

Special Steel Carbon Steel Round Bar S20C AISI 1020 System 1

Special Steel Carbon Steel Round Bar S20C AISI 1020

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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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Product Information

◊ Standards and Chemical Composition:

Carbon Structural Steel Bar 20#(GB)
Standards	Model	Chemical Composition (%)
Standards	Model	C	Si	Mn	S(≤)	P(≤)
GB	20#	0.17-0.23	0.17-0.37	0.35-0.65	0.035	0.035
DIN	C22(1.0402)	0.17-0.24	0.40(max)	0.40-0.70	0.045	0.045
BS	IC22	0.17-0.24	0.40(max)	0.30-0.60	0.04	0.045
AISI/ATEM/SAE	1020	0.18-0.23	0.15-0.35	0.30-0.60	0.05	0.03
JIS	S20C	0.18-0.23	0.15-0.35	0.30-0.60	0.035	0.03

◊ Mechanical Property:

Carbon Structural Steel Bar 20#(GB)
Yield Strength(MPa)	Tensile Strength(MPa)	Elongation(%)	AKV(J)	Reduction in Area(%)	Hardness(HB)
245	410	25	54	55%	156

◊ Application:

We can see that the carbon steel bar has higher plasticity, better toughness and better welding performance. This kind of steel is good material in mading Lever shaft, Transmission shift folk, Heavy machinery trolley, Wheel gear, Mental loop, press forging parts, Rack rod, wear-resistant parts, for mold steel, etc.

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Special Steel Carbon Steel Round Bar S20C AISI 1020

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Special Steel Carbon Steel Round Bar S20C AISI 1020

Shipping

1. FedEx/DHL/UPS/TNT for samples, Door-to-Door;

2. By Air or by Sea for batch goods, for FCL; Airport/ Port receiving;

3. Customers specifying freight forwarders or negotiable shipping methods!

Delivery Time: 3-7 days for samples; 5-25 days for batch goods.

Payment Terms

1.Payment: T/T, L/C, Western Union, MoneyGram,PayPal; 30% deposits; 70% balance before delivery.

2.MOQ: 1pcs

3.Warranty : 3 years

4.Package Informations: 1) EXPORT, In 20 feet (GW 25 ton) or 40 feet Container (GW 25 ton)

2)as customer's requirement

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: How does special steel contribute to reducing material waste?: Special steel contributes to reducing material waste through its unique properties and manufacturing processes. Firstly, special steel is known for its high strength and durability, which allows for the creation of products that have a longer lifespan and require less frequent replacement. This reduces the amount of material waste generated from constantly discarding and replacing worn-out products. Moreover, special steel is often designed to be easily recyclable. Its composition and manufacturing techniques allow for efficient recycling, enabling the reuse of steel scrap and minimizing the need for new raw materials. This significantly reduces material waste by preventing the accumulation of discarded steel products in landfills. Additionally, special steel's versatility and customization options play a vital role in reducing material waste. By tailoring the steel's composition and properties to specific applications, manufacturers can optimize the use of materials and avoid unnecessary waste. Special steel's ability to be formed into complex shapes and sizes further enhances its efficiency, as it reduces the amount of excess material that would typically be wasted during the manufacturing process. In summary, special steel contributes to reducing material waste through its strength and durability, recyclability, and customization options. By promoting longer product lifespans, efficient recycling processes, and optimized material usage, special steel plays a crucial role in minimizing waste and promoting sustainability.

Q: What are the specific requirements for special steel used in the mining drill bit industry?: The specific requirements for special steel used in the mining drill bit industry are focused on durability, toughness, and resistance to wear and corrosion. Firstly, the steel used in mining drill bits must have excellent durability to withstand the harsh and demanding conditions of the mining environment. The drill bits are subjected to high levels of impact, vibration, and stress, so the steel must possess high strength and hardness to prevent deformation or breakage. Secondly, toughness is crucial for drill bit steel as it needs to withstand the repetitive and intense forces encountered during drilling operations. The steel should have good fracture toughness to resist crack propagation and prevent premature failure. Furthermore, resistance to wear is essential for drill bit steel, as it needs to maintain its cutting edge and performance over extended periods of time. The steel should possess high wear resistance to withstand the abrasive nature of the rocks and minerals being drilled. In addition to wear resistance, the steel used in mining drill bits must also exhibit resistance to corrosion. The mining environment often involves exposure to water, chemicals, and various corrosive agents. Therefore, the steel should have suitable corrosion resistance properties to prevent rusting and degradation. Overall, the special steel used in the mining drill bit industry must meet these specific requirements of durability, toughness, wear resistance, and corrosion resistance to ensure reliable and efficient drilling operations in the mining sector.

Q: What are the thermal properties of special steel?: Special steel, also known as tool steel or alloy steel, possesses excellent thermal properties. It has a high melting point, allowing it to withstand extreme temperatures without losing its structural integrity. Furthermore, special steel exhibits good heat resistance, ensuring it retains its strength and hardness even when exposed to high thermal loads. Additionally, its thermal conductivity is relatively low, making it suitable for applications where heat transfer needs to be controlled or minimized. Overall, the thermal properties of special steel make it a reliable material for various industrial and engineering applications that involve high temperatures and thermal stresses.

Q: What are the main factors affecting the impact toughness of special steel?: Various factors influence the impact toughness of special steel and other materials. The impact toughness of special steel can be affected by the following main factors: 1. Composition: The impact toughness of the steel is greatly influenced by its chemical composition. Adding elements like carbon, manganese, silicon, nickel, and molybdenum can enhance the toughness of the steel. Higher carbon content generally increases hardness but decreases toughness, while alloying elements like nickel and molybdenum can improve toughness. 2. Heat treatment: The impact toughness of special steel can be significantly altered by the heat treatment process, including quenching and tempering. Proper heat treatment can refine the steel's microstructure, making it more resistant to fractures and increasing its toughness. 3. Microstructure: The toughness of the steel is heavily influenced by its microstructure, including the size, shape, and distribution of its grains. Fine-grained steels generally exhibit better toughness compared to coarse-grained ones. The presence of certain phases, such as martensite or bainite, can also impact the impact toughness. 4. Inclusions: The presence of non-metallic inclusions, such as sulfides, oxides, or carbides, in the steel can act as stress concentration points and reduce its impact toughness. High-quality special steels often undergo processes like vacuum degassing or electroslag remelting to minimize these inclusions. 5. Processing conditions: The manufacturing processes used to produce special steel can affect its impact toughness. Factors like forging, rolling, or extrusion conditions, as well as the cooling rate during solidification, can impact the microstructure and, consequently, the toughness of the steel. 6. Temperature: The impact toughness of special steel varies with temperature. Some steels exhibit good toughness at low temperatures, while others perform better at higher temperatures. The temperature at which the steel is used or tested is an important factor to consider when evaluating its impact toughness. It is important to note that standardized tests, such as the Charpy or Izod test, are often used to determine the impact toughness of special steel. These tests involve subjecting a notched specimen to impact loading and provide valuable information on the steel's ability to absorb energy and resist fracture under impact conditions.

Q: What are the different heat treatment methods used for special steel?: Special steel undergoes various heat treatment methods, each serving its own purpose and offering unique advantages. These methods are employed to enhance the mechanical properties of the steel, including hardness, toughness, and strength. Some commonly used heat treatment methods for special steel are as follows: 1. Annealing: By heating the steel to a specified temperature and holding it there for a specific duration, followed by gradual cooling, annealing reduces internal stress and improves the steel's machinability. 2. Normalizing: This process involves heating the steel above its critical range and allowing it to cool in still air. Normalizing refines the grain structure, resulting in a more uniform steel with improved strength and toughness. 3. Quenching: Rapid cooling through immersion in a quenching medium, such as oil or water, after heating the steel to a specific temperature, results in hardened steel with increased hardness and wear resistance. 4. Tempering: After hardening the steel, reheating it to a specific temperature and then cooling it in still air reduces brittleness and improves toughness and ductility. 5. Austempering: In this specialized method, the steel is quenched to a temperature just above its martensite transformation range and held there for a specific duration, followed by air cooling. Austempering produces steel with a combination of high strength and toughness. 6. Martempering: This variation of quenching and tempering involves quenching the steel and then holding it slightly above its martensite transformation range before air cooling. Martempering improves toughness and reduces distortion. 7. Nitriding: By heating the steel in an atmosphere of ammonia gas, nitrogen is introduced, resulting in a hard nitride layer on the surface. Nitriding increases hardness, wear resistance, and corrosion resistance. These heat treatment methods play a crucial role in tailoring the properties of special steel to meet specific requirements in industries such as automotive, aerospace, and tool manufacturing. The choice of heat treatment method depends on the desired properties and the intended application of the steel.

Q: What are the emerging trends in special steel production?: The special steel production industry is being shaped by several emerging trends: 1) The industry is experiencing an increasing demand for high-performance alloys. Technological advancements and industrial applications require special steels with superior properties, such as high strength, corrosion resistance, and heat resistance. This has led to a higher demand for alloys like stainless steel, tool steel, and superalloys. 2) Advanced manufacturing techniques, such as additive manufacturing (3D printing) and precision machining, are being adopted for special steel production. These techniques allow for the production of complex geometries and customized components, resulting in improved efficiency and reduced material waste. 3) Sustainability is a key focus in the steel industry. Special steel producers are adopting sustainable practices, such as using recycled materials, energy-efficient production processes, and waste management strategies. Investments in cleaner technologies are being made to meet the growing demand for sustainable steel products. 4) The integration of digital technologies, automation, and data analytics, known as Industry 4.0, is revolutionizing special steel production. Real-time monitoring, predictive maintenance, and optimization of production parameters are made possible through Industry 4.0 solutions. This leads to increased productivity, quality, and cost-effectiveness. 5) Special steel producers are developing new alloys to meet the specific requirements of emerging industries like aerospace, renewable energy, and electric vehicles. For example, lightweight, high-strength steels are being developed for aerospace applications, and corrosion-resistant steels for offshore wind turbines. 6) Collaborations and partnerships between special steel producers, research institutions, universities, and other industry players are on the rise. These collaborations drive innovation, knowledge sharing, and the development of new steel grades, applications, and production processes. In conclusion, the future of special steel production is being shaped by the demand for high-performance alloys, adoption of advanced manufacturing techniques, focus on sustainability, integration of Industry 4.0 technologies, development of alloys for emerging industries, and collaborations. These trends create opportunities for growth and innovation in the industry.

Q: What are the different methods of coating special steel?: Enhancing the performance and safeguarding special steel from corrosion or damage can be achieved through various coating methods. Some commonly used techniques include: 1. Galvanization: A layer of zinc is applied to the steel, either through hot-dip galvanization or electroplating. This zinc layer offers exceptional corrosion resistance and acts as a sacrificial anode, preventing rusting. 2. Powder coating: An electrostatically applied dry powder is cured under heat, creating a protective layer that not only provides resistance to chipping, scratching, and corrosion but also adds an appealing finish. 3. Electroplating: The steel is immersed in a solution containing metal ions like chromium or nickel, and an electric current is passed through it. This process deposits the metal ions onto the steel surface, forming a thin protective layer that enhances corrosion resistance and gives a decorative appearance. 4. Cladding: A layer of corrosion-resistant material, such as stainless steel or titanium, is bonded to the surface of the special steel. Cladding offers improved resistance to corrosion, wear, and heat while maintaining the base steel's strength and mechanical properties. 5. Thermal spraying: Coating material like zinc or aluminum is heated to a molten or semi-molten state and then sprayed onto the steel surface using compressed air or a similar method. The sprayed material forms a protective layer that delivers excellent corrosion resistance and can also provide functional properties like thermal insulation or electrical conductivity. 6. Chemical conversion coating: The steel surface is treated with a chemical solution that reacts with the surface to create a thin layer of protective compound like phosphate or chromate. This conversion coating enhances corrosion resistance and promotes the adhesion of subsequent coatings. These are just a few examples of the numerous coating methods available for special steel. The selection of the most suitable method depends on factors like desired properties, intended application, and budget constraints. It is crucial to choose the appropriate coating method to ensure the longevity and performance of the special steel.

Q: How does special steel respond to welding?: Special steel, also known as alloy steel, exhibits unique properties that affect its response to welding. Unlike regular carbon steel, special steel contains additional alloying elements such as chromium, nickel, or molybdenum, which enhance its strength, corrosion resistance, and heat resistance. When it comes to welding, special steel generally responds well due to its high tensile strength and toughness. However, there are a few considerations to keep in mind. The high carbon content in some special steels can lead to cracking or brittleness during the welding process. To prevent this, preheating the material and using appropriate welding techniques are crucial. It is important to choose the right welding method based on the specific type of special steel being used. For instance, gas tungsten arc welding (GTAW) or tungsten inert gas (TIG) welding is commonly preferred for welding stainless steel, as it ensures excellent control over the heat input and produces high-quality welds with minimal distortion. Furthermore, special steel often requires the use of special welding consumables, such as electrodes or filler wires, specifically designed for the particular alloy composition. These consumables help maintain the desired mechanical properties and prevent the formation of brittle phases in the weld. Post-weld heat treatment is also essential for certain special steels, as it helps relieve residual stresses and improves the overall weldment's properties. This process can involve annealing, normalizing, or tempering, depending on the specific steel grade and application requirements. In conclusion, special steel responds well to welding, but it's essential to consider its alloy composition, carbon content, and specific welding techniques. By following proper welding procedures, using appropriate consumables, and applying necessary heat treatments, high-quality welds can be achieved, ensuring the integrity and performance of the special steel components.

Q: How does special steel contribute to reducing product defects during manufacturing?: Special steel contributes to reducing product defects during manufacturing by offering enhanced mechanical properties and superior strength. This type of steel is specifically designed to meet the requirements of demanding applications, making it less prone to deformation, wear, or failure. Its exceptional hardness and toughness properties enable manufacturers to produce components with precise dimensions and high accuracy, resulting in reduced defects. Additionally, special steel's excellent corrosion resistance prevents rusting and deterioration, ensuring the longevity and reliability of the manufactured products.

Q: Can special steel be used in the pharmaceutical manufacturing industry?: Yes, special steel can be used in the pharmaceutical manufacturing industry. Special steel, such as stainless steel, offers excellent corrosion resistance, durability, and cleanability, making it suitable for various applications in pharmaceutical manufacturing, including equipment and machinery used in production, storage, and transportation of pharmaceutical products. Special steel's properties ensure compliance with strict hygiene and quality standards in the industry.

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