• Steel Round Bar S355J2G3 Forged Round Steel System 1
  • Steel Round Bar S355J2G3 Forged Round Steel System 2
  • Steel Round Bar S355J2G3 Forged Round Steel System 3
Steel Round Bar S355J2G3 Forged Round Steel

Steel Round Bar S355J2G3 Forged Round 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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Item specifice

Type:
Alloy Steel
Shape:
Steel Round Bar

Steel Round Bar S355J2G3 Forged Round Steel

Product Information:

1.S355J2G3 forged round bar

2.size:280*5300mm

3.ut:sep1921-84D/d

4.heatreatment:annealed

5.straightness:2mm/m

6.Process: EAF+LF+VD (ESR furnace for optional)

7.Delivery condition: Hot forged, Heat-treatment (Normalized / Annealed / Quenched / tempered), Rough machining

8.Technical Data: Chemical Composition, Physical Properties and Mechanical Testing according to the customer's requirement

9.Test: Ultrasonic and magnetic test according to customer' require(EN or ASME and so on).

Product Overviews:

Product NameTypical GradesDiameter(mm)Standard adopted
Carbon Steel20 (1020/S20C/C22)Ø16-Ø300GB/SAE/JIS/DIN
40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing SteelGCr9 (51100/SUJ1)Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel20Cr (5120/SCr420H/20Cr4)Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel20CrNiMoØ16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)

Product Show:

Steel Round Bar S355J2G3 Forged Round Steel

Our Advantages:

· Industry experience over 20 years.

· Shipment of goods -More than 70 countries worldwide.

· The most convenient transport and prompt delivery.

· Competitive price with best service.

· High technical production line with top quality products.

· High reputation based on best quality products.

 

With our experienced, enthusiastic and dynamic staffs, we assure to bring you the products with best quality, reasonable prices and good after-sales services under the motto: Friends First, Business After.

Communication, Experience, Expertise and Best efforts are our Promises to you.


Q:Can special steel be used in electrical applications?
Yes, special steel can be used in electrical applications. Special steel, such as electrical steel or transformer steel, is specifically designed to have low electrical resistance and high magnetic permeability, making it ideal for use in electrical equipment like transformers, motors, and generators.
Q:What is the role of special steel in the automotive industry?
Special steel plays a crucial role in the automotive industry by providing strength, durability, and resistance to wear and corrosion for various components. It is used in the production of engine parts, chassis components, transmission systems, and safety features, ensuring enhanced performance, reliability, and safety in vehicles.
Q:How does special steel contribute to the production of precision instruments?
Special steel contributes to the production of precision instruments by providing the necessary strength, durability, and resistance to corrosion. It ensures that the instruments maintain their accuracy and functionality under varying conditions and heavy usage. The high-quality properties of special steel allow for precise machining and shaping, enabling the production of intricate and delicate components required in precision instruments.
Q:How does special steel contribute to the aerospace structural industry?
Special steel plays a crucial role in the aerospace structural industry by providing a range of important attributes that are necessary for the construction of aircraft components. Firstly, special steel offers exceptional strength and durability, allowing it to withstand the extreme conditions and stresses experienced during flight. This is particularly important for critical components such as landing gear, engine parts, and wing structures which are subjected to high temperatures, pressure, and vibrations. Furthermore, special steel possesses excellent corrosion resistance, which is vital for ensuring the longevity and reliability of aerospace structures. Aircraft are constantly exposed to harsh environments, including high humidity, saltwater, and chemicals, which can lead to corrosion and degradation if not properly protected. The use of special steel helps to prevent these issues, ensuring the structural integrity of the aircraft throughout its lifespan. In addition to its strength and corrosion resistance, special steel also offers other desirable properties such as heat resistance, fatigue resistance, and weldability. These characteristics make it suitable for a wide range of aerospace applications, including the construction of fuselage frames, engine mounts, fasteners, and hydraulic systems. By utilizing special steel in these components, aerospace manufacturers can achieve lightweight designs without compromising on strength and safety. Moreover, special steel enables engineers to push the boundaries of aircraft performance by facilitating the development of advanced technologies. For instance, the use of special steel alloys in turbine blades allows for higher operating temperatures, which in turn improves engine efficiency and reduces fuel consumption. This contributes to the overall sustainability and environmental friendliness of the aerospace industry. In summary, special steel is a vital material in the aerospace structural industry as it provides the necessary strength, durability, corrosion resistance, and other essential properties required for the construction of aircraft components. Its contribution allows for the development of safer, more efficient, and technologically advanced aircraft, ultimately benefiting the aerospace industry as a whole.
Q:How does special steel perform in terms of electrical resistivity?
Special steel typically has relatively high electrical resistivity compared to other materials. This means that it does not conduct electricity as efficiently as materials with lower resistivity.
Q:What are the different methods of surface electroplating for special steel?
There are several methods of surface electroplating for special steel, including electroless plating, electroplating by immersion, barrel plating, and rack plating. Electroless plating is a chemical process that uses a reducing agent to deposit a layer of metal onto the steel surface. Electroplating by immersion involves immersing the steel in an electrolyte bath and applying an electric current to deposit a metal coating. Barrel plating is a method where the steel parts are placed in a rotating barrel along with the plating solution, creating a tumbling action that ensures an even coating. Rack plating involves suspending the steel parts on a rack and immersing them in the plating bath. Each method has its own advantages and is chosen based on the specific requirements and characteristics of the special steel being plated.
Q:What are the specific requirements for special steel used in the chemical industry?
In order to ensure optimal performance and safety, special steel used in the chemical industry must satisfy specific criteria. Some of the essential requirements for special steel in this industry comprise: 1. Corrosion resistance: The steel must exhibit high resistance to corrosion as it will be exposed to various aggressive chemicals and corrosive environments. This necessitates the steel's ability to endure the corrosive effects of acids, alkalis, and other chemicals commonly used in the industry. 2. High temperature resistance: The steel should demonstrate excellent heat resistance to endure high operating temperatures frequently encountered in chemical processes. This is crucial to prevent degradation or loss of strength when subjected to elevated temperatures. 3. Mechanical strength: Special steel used in the chemical industry should possess superior mechanical strength to withstand the high stress and pressure that may arise during chemical processes. It should maintain its structural integrity even under challenging conditions. 4. Fatigue and stress resistance: The steel must exhibit good resistance to fatigue and stress as it will be subjected to cyclic loading and pressure variations during operation. This is vital to ensure the longevity and reliability of the steel in the chemical industry. 5. Pitting and crevice corrosion resistance: Special steel should be resistant to pitting and crevice corrosion, which can occur in areas exposed to stagnant or low-velocity corrosive media. Pitting and crevice corrosion can lead to localized damage and failure of the steel, making resistance to these types of corrosion indispensable. 6. Low impurity content: Special steel used in the chemical industry should contain minimal impurities to minimize the risk of contaminating the processed chemicals. Impurities can react with the chemicals or cause undesired reactions, potentially resulting in product quality issues or safety hazards. 7. Easy cleanability: The steel should possess a smooth surface and be easily cleanable to prevent the accumulation of contaminants or fouling. This is crucial to maintain the purity of the processed chemicals and ensure efficient equipment operation. By meeting these specific requirements, special steel used in the chemical industry can endure harsh conditions and corrosive environments while preserving its structural integrity, performance, and safety.
Q:How is wear-resistant alloy steel used in the production of mining equipment?
Wear-resistant alloy steel is commonly used in the production of mining equipment due to its exceptional durability and resistance to abrasion and impact. It is utilized in components such as crusher liners, grinding media, buckets, and drill bits to withstand the harsh conditions of mining operations, where rocks, ores, and minerals can cause significant wear and tear. By using wear-resistant alloy steel, mining equipment can operate for longer periods without the need for frequent replacements, resulting in improved productivity and reduced maintenance costs.
Q:How does special steel contribute to the manufacturing of gears?
Due to its unique properties and characteristics, special steel is essential in the production of gears. Gears, which are mechanical devices that facilitate the transmission of power and motion between rotating shafts, require the ability to withstand high loads, operate at high speeds, and maintain precise dimensions for smooth and efficient performance. Special steel, with its enhanced mechanical properties and superior quality, provides the necessary strength, durability, and wear resistance needed for gear manufacturing. A key aspect of special steel is its high strength and hardness. Gears often endure heavy loads and experience significant stress during operation. Special steel, such as alloy steel or tool steel, possesses exceptional strength, enabling gears to handle these loads without deformation or failure. Additionally, the hardness of special steel ensures that gears can withstand abrasive wear and prevent damage caused by external factors like friction and contact with other components. Special steel also contributes to gear manufacturing by offering excellent fatigue resistance. Gears are exposed to repetitive cyclic loading, which, if not properly designed and manufactured, can result in fatigue failure over time. Special steel, with its unique microstructure and composition, enhances the fatigue life of gears by minimizing crack propagation and reducing the risk of failure, ensuring long-term reliability and performance. Furthermore, special steel provides excellent machinability and dimensional stability, two critical factors in gear manufacturing. The machinability of special steel allows for precise shaping and cutting of gear teeth, ensuring accurate dimensions and smooth gear operation. The dimensional stability of special steel helps to maintain the gear's shape and integrity under various temperature and environmental conditions, guaranteeing consistent performance throughout its lifespan. In conclusion, special steel plays a significant role in gear manufacturing by supplying the necessary strength, durability, wear resistance, fatigue resistance, machinability, and dimensional stability. Gears made from special steel can endure high loads, operate at high speeds, and maintain precise dimensions, ultimately contributing to the efficient functioning of various machinery and mechanical systems.
Q:What are the main applications of special steel in the marine sector?
Special steel is widely used in the marine sector for various applications. Some of the main applications include shipbuilding, offshore oil and gas exploration, and marine equipment manufacturing. Special steel is used to construct the hulls and superstructures of ships, as well as various components such as propellers, shafts, and rudders. Its high strength, durability, and corrosion resistance make it ideal for withstanding the harsh conditions of the marine environment. Additionally, special steel is also used in the construction of offshore platforms, pipelines, and underwater structures, as it can withstand extreme pressures and resist corrosion caused by saltwater.

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