Round Bar Reinforcing Steel Bars Q345 Special Steel

Round Bar Reinforcing Steel Bars Q345 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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Main Product

Plastic Mould Steel

DIN 1.2311,1.2738,1.2083,1.2316 etc.

AISI P20,P20+Ni,420 etc.

JIS SUS420J2

Hot Work Steel

DIN 1.2344,1.2343,1.2367,1.2365,1.2581,1.2713 etc.

AISI H13,H11,H10,H21, etc.

JIS SKD61,SKD6,SKD5,SKT4 etc.

Cold Work Steel

DIN 1.2739, 1.2601, 1.2080, 1.2436, 1.2631, 1.263, 1.2510, 1.2327 etc.

AISI D2, D5, D3, D6, A8, A2, O1 etc.

JIS SKD10, SKD11, SKD1, SKS3 etc.

High Speed Steel

DIN 1.3343, 1.3243, 1.3247, 1.3355 etc.

AISI M2, M35, M42, T1 etc.

JIS SKH51, SKH35, SKH59, SKH2 etc.

Alloy Structural Steel

DIN 1.7035,1.6511,1.7220,1.7225 etc.

AISI 5140, 4340, 4135, 4140 etc.

JIS SCr440,SNCM439,SCM435,SCM440 etc.

Stainless & Carbon Steel or Others

DIN 1.4125,1.1191 etc

AISI 440C,1045, 1020 etc.

JIS SUS440C,S45C etc

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Round Bar Reinforcing Steel Bars Q345 Special Steel

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 is special steel used in the food processing industry?: Special steel is used in the food processing industry for various applications such as manufacturing equipment, machinery, and tools. It is particularly utilized in the production of cutting blades, mixers, grinders, and other components that require high strength, durability, and resistance to corrosion. This type of steel ensures the hygienic processing of food products, maintains product quality, and meets the stringent safety standards required in the industry.

Q:What are the main factors that affect the machinability of special steel?: The machinability of special steel can be influenced by several factors. One of the main factors is the composition of the steel itself. Special steels often have complex alloys added to enhance their properties, such as increased strength or corrosion resistance. However, these alloying elements can also have a negative impact on machinability. Elements like chromium, nickel, and molybdenum can cause the steel to become more difficult to machine due to their hardening or abrasive properties. Another factor that affects machinability is the microstructure of the steel. Special steels can undergo various heat treatments to achieve desired properties, but these treatments can also change the microstructure of the material. For example, the presence of carbides or precipitates can make the steel harder and more brittle, leading to increased tool wear and poorer machinability. The hardness of the steel is another important factor. Harder steels generally have lower machinability as they are more resistant to cutting forces. High-speed steels, which are commonly used for machining, can be used to counteract this issue to some extent. However, excessively hard steels may require specialized tooling or machining techniques to achieve satisfactory results. The presence of impurities or non-metallic inclusions in the steel can also affect machinability. These impurities can disrupt the cutting process, leading to reduced tool life and surface finish. Special steel manufacturers often strive to minimize impurities and control inclusion content to improve machinability. Lastly, the cutting parameters and machining conditions play a significant role in determining machinability. Factors such as cutting speed, feed rate, and depth of cut need to be optimized to achieve the best balance between material removal rate and tool life. Coolant usage and chip evacuation are also crucial considerations to prevent excessive heat buildup and chip recutting, which can negatively impact machinability. In summary, the main factors that affect the machinability of special steel include composition, microstructure, hardness, impurities, and cutting parameters. Understanding these factors and applying appropriate machining techniques can help maximize productivity and achieve high-quality machined components from special steels.

Q:What is the role of research and development in advancing special steel technology?: Research and development (R&D) plays a crucial role in advancing special steel technology. Special steel refers to steel alloys that are specifically designed to possess enhanced properties such as high strength, corrosion resistance, heat resistance, or electrical conductivity. R&D activities are essential for pushing the boundaries of special steel technology and developing new and improved alloys. Through continuous research, scientists and engineers are able to explore new compositions, manufacturing processes, and heat treatment techniques to enhance the properties and performance of special steels. One of the primary roles of R&D in advancing special steel technology is the discovery and development of new alloy compositions. R&D teams analyze the properties of different elements and their interactions to design steel alloys with desired characteristics. This involves conducting experiments, testing various compositions, and optimizing the alloy to meet specific application requirements. By fine-tuning the composition, R&D helps in enhancing the strength, hardness, toughness, or other desirable properties of special steels. Furthermore, R&D also focuses on developing innovative manufacturing processes for special steel production. These processes involve advanced techniques such as vacuum melting, rapid solidification, or powder metallurgy to obtain a refined microstructure and improved mechanical properties. R&D teams work on optimizing these processes to enhance the overall quality, efficiency, and cost-effectiveness of special steel production. Another crucial role of R&D is the improvement of heat treatment techniques for special steels. Heat treatment is a critical step in the fabrication of special steels as it helps to achieve desired microstructures and properties. R&D endeavors to optimize the heat treatment parameters, such as temperature, time, and cooling rates, to enhance the mechanical properties and performance of special steels. In addition to alloy composition, manufacturing processes, and heat treatment, R&D also plays a vital role in developing new testing and characterization methods for special steels. This enables the evaluation and validation of the properties and performance of these steels under various conditions. Advanced testing techniques such as electron microscopy, X-ray diffraction, and mechanical testing are employed to assess the microstructural features, phase transformations, and mechanical behavior of special steels. Overall, research and development activities are indispensable for advancing special steel technology. Through continuous research, innovation, and optimization, R&D teams contribute to the development of new and improved alloys, manufacturing processes, heat treatment techniques, and testing methods, ultimately leading to the advancement of special steel technology and its applications in various industries such as automotive, aerospace, energy, and construction.

Q:How does special steel contribute to the manufacturing of structural components?: The unique properties and characteristics of special steel are crucial in the manufacturing of structural components. Firstly, its exceptional strength and durability make it an ideal material for load-bearing structures, as it can withstand high levels of stress, pressure, and heavy loads, ensuring their safety and integrity. In addition, special steel's excellent corrosion resistance is particularly important for structural components exposed to harsh environments. This feature helps prevent rusting and deterioration, thereby extending the lifespan of the components and reducing maintenance costs. Moreover, special steel offers a high degree of versatility in terms of design and fabrication. It can be easily shaped, molded, and welded, allowing manufacturers to create complex and intricate components with precision. This flexibility enables the production of customized components that meet specific requirements, enhancing the overall performance and functionality of the structures. Furthermore, special steel exhibits excellent heat resistance and fireproofing properties, making it suitable for components exposed to high temperatures or fire hazards. This is particularly important in industries such as industrial facilities, power plants, or transportation infrastructure, where fire protection is vital. Additionally, special steel often has superior fatigue resistance, allowing it to withstand repetitive or cyclic loading without suffering from fatigue failure. This property is crucial for components subjected to dynamic or fluctuating loads. In conclusion, special steel significantly contributes to the manufacturing of structural components by providing strength, durability, corrosion resistance, versatility in design, heat resistance, fireproofing, and fatigue resistance. Its unique properties make it an essential material choice for constructing safe, reliable, and long-lasting structures across various industries.

Q:What are the main applications of special steel in the electronics packaging?: Special steel is widely used in electronics packaging due to its unique properties. The main applications of special steel in electronics packaging include providing high strength and durability to protect delicate electronic components, offering excellent corrosion resistance to safeguard against environmental factors, and ensuring thermal conductivity for efficient heat dissipation. Additionally, special steel is utilized in creating precise and intricate shapes for components, ensuring electromagnetic compatibility, and providing electrical conductivity for improved performance and reliability in electronic devices.

Q:What are the different methods of surface grinding for special steel?: For special steel, there exist numerous techniques for surface grinding. Presented below are some of the most commonly employed methods: 1. Blanchard Grinding: To eliminate material from the steel's surface, this technique employs a grinding wheel and a rotary table. The grinding wheel, usually composed of abrasive particles bonded together in a matrix, revolves at a high speed. Blanchard grinding excels in its ability to swiftly and efficiently remove substantial amounts of material, making it ideal for roughing operations. 2. Precision Grinding: This method is frequently utilized for finishing operations that demand a high level of accuracy and surface finish. Precision grinding entails the use of a surface grinder equipped with a fine-grit grinding wheel to eliminate a small quantity of material from the steel's surface. This process is typically slower and more precise than Blanchard grinding, resulting in a smoother and more refined surface. 3. Centerless Grinding: For cylindrical steel components necessitating exceptional precision, centerless grinding is commonly employed. This technique involves feeding the steel between a grinding wheel and a regulating wheel, with the grinding wheel removing material from the surface as it rotates. The regulating wheel governs the speed and feed rate of the steel, ensuring consistent and precise grinding. 4. Creep Feed Grinding: This technique is employed for the substantial removal of stock from large steel parts. Creep feed grinding involves employing a slow feed rate and making deep cuts to eliminate material from the surface. This method is typically employed for specialized applications where traditional surface grinding methods are unsuitable due to the size or complexity of the steel part. Ultimately, the selection of a surface grinding method for special steel hinges on factors such as the desired surface finish, accuracy requirements, and the size and complexity of the steel part. Consulting with a proficient grinding professional is vital to determine the most suitable method for a specific application.

Q:How does special steel contribute to the power generation sector?: Special steel plays a crucial role in the power generation sector by offering various benefits and contributing to the overall efficiency and reliability of power generation equipment. One of the primary ways special steel contributes is through its superior strength and durability. Power generation involves highly demanding and extreme conditions, including high temperatures, pressure, and corrosive environments. Special steel is specially designed to withstand these harsh conditions and maintain its structural integrity, ensuring the long-term reliability and safety of power generation equipment. Special steel is used in various components of power generation equipment, such as turbines, boilers, and generators. In gas turbines, for example, special steel is utilized for the construction of turbine blades and vanes, which are subjected to immense heat and rotational forces. The high-temperature resistance and strength of special steel allow these components to operate at elevated temperatures without deformation or failure, thereby increasing the efficiency and performance of gas turbines. Moreover, special steel offers excellent corrosion resistance, making it suitable for use in power plants that utilize water-based cooling systems. These cooling systems often employ seawater or chemically treated water, which can be highly corrosive. By using special steel in critical components like condensers and heat exchangers, the power generation sector can significantly reduce maintenance and replacement costs associated with corrosion-related issues. Additionally, special steel is crucial in the construction of nuclear power plants. It is used in the fabrication of reactor pressure vessels, steam generators, and fuel assemblies. The radiation resistance and high strength of special steel ensure the safety and reliability of these components in nuclear power plants, thereby contributing to the overall efficiency and sustainability of the power generation sector. In summary, special steel's superior strength, high-temperature resistance, corrosion resistance, and radiation resistance make it an indispensable material in the power generation sector. It enhances the efficiency, reliability, and safety of power generation equipment, ultimately contributing to the overall growth and sustainability of the power generation industry.

Q:What are the different methods of preventing intergranular corrosion in special steel?: There are several methods available to prevent intergranular corrosion in special steel. 1. Heat Treatment: One effective method is to subject the steel to a heat treatment process called solution annealing. This involves heating the steel to a high temperature and then rapidly cooling it. This process helps to dissolve any precipitates or carbides that may have formed along the grain boundaries, thus reducing the risk of intergranular corrosion. 2. Alloying: Another approach is to add specific alloying elements to the steel composition. For example, the addition of elements like chromium and molybdenum can enhance the steel's resistance to intergranular corrosion. These alloying elements form a protective oxide layer on the surface, preventing corrosion from occurring along the grain boundaries. 3. Passivation: Passivation involves treating the steel surface with chemicals that create a protective layer. This layer acts as a barrier, preventing the corrosive environment from reaching the grain boundaries. Commonly used passivation techniques include acid pickling and electrochemical methods. 4. Sensitization Control: Special attention must be given to the sensitization process, which occurs when the steel is exposed to high temperatures for a prolonged period. This can lead to the precipitation of chromium carbides along the grain boundaries, making the steel susceptible to intergranular corrosion. By carefully controlling the heating and cooling rates during processing, sensitization can be minimized or prevented. 5. Corrosion Inhibitors: Another option is to use corrosion inhibitors, which are chemicals that can be applied to the steel surface to protect it from corrosion. These inhibitors form a protective film on the surface, preventing the corrosive agents from attacking the grain boundaries. It is important to note that the specific method used will depend on the type of special steel and the intended application. The selection of the most appropriate method should be based on a thorough understanding of the steel's composition, processing conditions, and the anticipated corrosive environment.

Q:How does special steel contribute to improving product performance in corrosive environments?: Special steel contributes to improving product performance in corrosive environments by offering enhanced resistance against corrosion. The unique composition of special steel, which includes elements such as chromium, nickel, and molybdenum, provides a protective layer that prevents the material from being affected by corrosive elements present in the environment. This resistance to corrosion ensures that the product remains durable, reliable, and unaffected by rust or degradation, ultimately enhancing its performance and longevity in corrosive conditions.

Q:How does special steel perform in automotive applications?: Due to its outstanding performance characteristics, special steel is frequently utilized in automotive applications. It boasts superior strength, durability, and resistance to wear and corrosion, making it an ideal option for a wide range of automotive components. In terms of strength, special steel surpasses regular steel with its higher tensile strength, enabling it to withstand heavy loads and impacts. This strength is crucial in automotive applications where components must endure extreme forces while maintaining their structural integrity. Additionally, special steel displays excellent fatigue resistance, ensuring longevity and reliability even in demanding conditions. Furthermore, special steel's exceptional durability allows it to withstand harsh environments, including extreme temperatures, chemicals, and moisture. This durability assists automotive components in maintaining their functionality and performance over an extended period. Another significant advantage of special steel in automotive applications lies in its resistance to wear and corrosion. Automotive components are constantly exposed to friction, abrasion, and corrosive substances. Special steel's high wear resistance allows these components to endure prolonged use without experiencing significant degradation. Moreover, its corrosion resistance protects against rust and other forms of deterioration, preventing premature component failure. Additionally, special steel can be easily shaped and formed into intricate designs, empowering automotive manufacturers to create complex components with precise specifications. The versatility and formability of special steel make it an excellent choice for various automotive applications, including engine parts, suspension systems, chassis components, and exhaust systems. Overall, special steel's exceptional strength, durability, resistance to wear and corrosion, and versatility contribute to its status as a highly sought-after material for automotive applications. Its performance characteristics enhance safety, reliability, and efficiency in vehicles, establishing special steel as an integral part of the automotive industry.

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