SD390 Steel Rebar with JIS Standard
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 160 m.t.
- Supply Capability:
- 500000 m.t./month
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Quality Product, Order Online Tracking, Timely Delivery
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Specification
Type:
Carbon Steel
Shape:
Steel Round Bar
SD390 Steel Rebar with JIS Standard
Description of SD390 Steel Rebar with JIS Standard
1, Diameter: 5.5mm-10mm SD390 Steel Rebar with JIS Standard
10m- 40mm SD390 Steel Rebar with JIS Standard
2, Length: 6m, 9m, 12m or customized
3, Standard: GB, ASTM, AISI, SAE, DIN, JIS, EN
OEM technology - send detailed technical parameters for accurate quotation.
2, Produce Process: smelt iron - EAF smelt billet - ESR smelt billet -
hot rolled or forged to get the steel round bar and plate
3, Heat Treatment: annealing, normalizing, tempering, quenching
4, Surface Treatment: Black
5, Quality Assurance: We accept third party inspection for all orders.
You can ask testing organizations such as SGS, BV, etc. to test our products before shipping.
Chemical Composition of SD390 Steel Rebar with JIS Standard
Grade | Technical data of the original chemical composition(%) | |||||
Reinforcing steel bar HRB335 | C | Mn | Si | S | P | B |
≤0.25 | ≤1.60 | ≤0.80 | ≤0.045 | ≤0.045 | >0.0008 | |
Physics Capability | ||||||
Yield Strength(N/cm2) | Tensile Strength(N/cm2) | Elongation(%) | ||||
≥ 335 | ≥490 | ≥16 | ||||
Reinforcing steel bar HRB400 | C | Mn | Si | S | P | B |
≤0.25 | ≤0.16 | ≤0.80 | ≤0.045 | ≤0.045 | 0.04-0.12 | |
Physics Capability | ||||||
Yield Strength(N/cm2) | Tensile Strength(N/cm2) | Elongation(%) | ||||
≥ 400 | ≥ 570 | ≥ 14 | ||||
Products Show of SD390 Steel Rebar with JIS Standard
Company Information
CNBM International Corporation is the most important trading platform of CNBM group.
Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.
F A Q
1, Your advantages?
professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale
2, Test & Certificate?
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem
3, Factory or Trading Company?
CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.
4, Payment Terms?
30% TT as deposit and 70% before delivery.
Irrevocable L/C at sight.
5, Trading Terms?
EXW, FOB, CIF, FFR, CNF
6, After-sale Service?
CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.
For any problem, please kindly contact us at any your convenient time.
We'll reply you in our first priority within 24 hours.
- Q:Can special steel be used in the transportation industry?
- Yes, special steel can be used in the transportation industry. Special steel alloys, such as high-strength steels, stainless steels, and heat-resistant steels, offer superior mechanical properties, corrosion resistance, and temperature stability. These properties make them ideal for various applications in transportation, including manufacturing of automobile bodies, aircraft components, railway infrastructure, and shipbuilding. Special steel's durability, strength, and resistance to wear and tear make it an excellent choice for ensuring the safety, reliability, and efficiency of vehicles and transportation systems.
- Q:What is the impact of grain size on the mechanical properties of special steel?
- The mechanical properties of special steel are significantly affected by the size of its grains. Grain size refers to the dimensions and arrangement of individual crystals within the steel structure. It is determined by various factors, including the speed at which the steel solidifies and subsequent heat treatments. In general, smaller grain sizes in special steel result in improved mechanical properties. This is because smaller grains provide more grain boundaries, which act as obstacles to the movement of dislocations and enhance the steel's strength. Smaller grains also contribute to a more uniform microstructure, enhancing overall toughness and resistance to fracture. Furthermore, smaller grain sizes promote higher hardness and increased resistance to wear in special steel. This is because the greater number of grain boundaries impedes dislocation movement, preventing plastic deformation and resulting in higher hardness values. Conversely, larger grain sizes can have a detrimental effect on the mechanical properties of special steel. Larger grains have fewer grain boundaries, allowing dislocations to move more freely. As a result, the strength, toughness, and hardness of the steel are diminished. Additionally, larger grains can lead to anisotropic behavior, where the mechanical properties vary in different crystallographic directions. This makes the steel more vulnerable to failure under specific loading conditions. Therefore, it is crucial to control and optimize the grain size in special steel to achieve the desired mechanical properties. This can be accomplished through precise heat treatments, such as annealing or quenching, which regulate the cooling rate and subsequent recrystallization processes. By controlling the grain size, special steel can be tailored to meet specific application requirements, ensuring optimal mechanical performance and reliability.
- Q:What are the main factors affecting the strength of special steel?
- The main factors affecting the strength of special steel include the composition of the steel, the heat treatment process, and the presence of any impurities or defects in the material. Additionally, the grain size and structure of the steel, as well as the presence of any alloying elements or treatments, can also impact its strength.
- Q:How does special steel contribute to the metalworking industry?
- Special steel plays a crucial role in the metalworking industry by providing enhanced properties and performance that regular steel cannot achieve. It contributes to the industry in several ways: 1. Improved Strength and Durability: Special steel is manufactured with specific alloys and composition, making it stronger and more durable than regular steel. This enables it to withstand high temperatures, heavy loads, and extreme environments, making it ideal for applications in industries such as aerospace, automotive, and construction. 2. Enhanced Corrosion Resistance: Special steel is often designed to have superior resistance to corrosion compared to regular steel. This makes it highly suitable for applications in marine, chemical, and oil and gas industries, where exposure to harsh environments and corrosive elements is common. 3. Increased Hardness and Wear Resistance: Special steel can be engineered to have higher hardness and wear resistance, making it ideal for manufacturing cutting tools, dies, molds, and other components that require prolonged usage and resistance to wear and tear. This contributes to increased productivity and efficiency in metalworking processes. 4. Precision Machining: Special steel offers excellent machinability, allowing for precise shaping, drilling, and cutting. This enables manufacturers to create complex and intricate designs with ease, resulting in high-quality finished products and components. 5. Customization and Flexibility: Special steel can be tailored to meet specific requirements, allowing for customization and flexibility in design and application. Manufacturers can choose from a wide range of special steel grades, each with its unique properties, to suit their specific needs. Overall, special steel significantly contributes to the metalworking industry by providing enhanced strength, durability, corrosion resistance, hardness, wear resistance, machinability, and customization options. It enables the industry to manufacture high-quality products, improve efficiency, and meet the demanding requirements of various sectors.
- Q:How does special steel contribute to the aerospace racing aftermarket industry?
- Special steel plays a significant role in enhancing the performance, durability, and safety of aircraft and racing vehicles within the aerospace racing aftermarket industry. Its importance cannot be overstated. To start with, critical engine components like turbine blades, compressor discs, and shafts are manufactured using special steel. These components must withstand extreme temperatures, pressures, and mechanical stress during operation. Nickel-based superalloys, which are a type of special steel alloy, provide excellent heat resistance, high strength, and exceptional corrosion resistance. This ensures that the engine systems perform at their best and are reliable. Additionally, special steel is essential in constructing airframe structures. Titanium alloys, which are lightweight yet possess high-strength properties, are crucial in reducing the overall weight of aircraft and racing vehicles. This reduction in weight leads to improved fuel efficiency, increased speed, and better handling capabilities. Therefore, special steel is an indispensable material in the aerospace racing aftermarket. Furthermore, special steel is utilized in the production of landing gear systems, which are vital for safe takeoffs, landings, and overall maneuverability. The landing gear must endure immense forces and shock loads during these operations. Special steel alloys such as chromium-molybdenum steel offer exceptional toughness, fatigue resistance, and impact strength. This ensures the landing gear's reliability and longevity. Moreover, special steel plays a crucial role in manufacturing aerospace racing aftermarket components like fasteners, bearings, and gears. These components require high strength, wear resistance, and dimensional stability to withstand the demanding conditions of racing and provide optimal performance. Special steel alloys like stainless steel and tool steel possess these desirable properties, ensuring the longevity and reliability of these crucial components. To sum up, special steel's exceptional properties, including high strength, heat resistance, corrosion resistance, and fatigue resistance, enable the production of reliable, efficient, and high-performance aircraft and racing vehicles within the aerospace racing aftermarket industry. Without special steel, the industry would be unable to achieve the level of advanced technology, speed, and safety that it currently enjoys.
- Q:Can special steel be used for manufacturing tools?
- Yes, special steel can be used for manufacturing tools. Special steel is often preferred for tool production as it offers superior strength, durability, and resistance to wear and tear. It also allows for the creation of tools with specific properties, such as high heat resistance or corrosion resistance, making it suitable for various applications in industries like automotive, aerospace, and construction.
- Q:What is the process of manufacturing special steel?
- To produce high-quality and durable special steel with specific properties, several steps must be taken in the manufacturing process. Firstly, the raw materials needed for special steel production, such as iron ore, coal, chromium, nickel, and manganese, are selected meticulously based on the desired properties of the final product. Once the raw materials have been chosen, they are melted in large furnaces, either through the use of electric arc furnaces or basic oxygen furnaces. These furnaces subject the raw materials to extremely high temperatures, transforming them into molten metal. After the raw materials have been melted, the molten metal undergoes a refining process to eliminate any impurities. Techniques such as degassing, desulphurization, and deoxidation are employed to ensure that the steel is free from unwanted elements that could have a negative impact on its properties. Next, alloying elements are added to the molten metal after the refining process to achieve the desired properties. The proportion and specific alloying elements utilized depend on the intended application of the special steel. The molten steel is then poured into a continuous casting machine, which solidifies it into semi-finished products known as billets, blooms, or slabs. This continuous casting process guarantees a consistent and uniform structure throughout the steel. The semi-finished products are reheated and passed through a series of hot rolling mills. This process involves reducing the thickness and shaping the steel into various forms, including bars, rods, plates, or sheets, depending on the intended use. Following hot rolling, the steel may undergo heat treatment processes like annealing, quenching, tempering, or case hardening. These treatments further enhance the mechanical properties of the steel, such as its hardness, toughness, and ductility. The final step involves surface finishing and quality control measures. The steel is thoroughly inspected for any defects or imperfections that may have occurred during the manufacturing process. Surface treatments like pickling or galvanizing can also be applied to enhance the steel's appearance and protect it from corrosion. In conclusion, manufacturing special steel is a complex and precise operation that involves careful selection of raw materials, melting, refining, alloying, continuous casting, hot rolling, heat treatment, and finishing. These steps ensure that the resulting steel meets the specific requirements and performance characteristics demanded by various industries.
- Q:What are the requirements for special steel used in high-strength applications?
- To ensure the performance and durability of special steel used in high-strength applications, specific requirements must be met. These requirements encompass various factors: 1. High tensile strength is crucial in withstanding heavy loads and resisting deformation. It enables the steel to endure greater stresses without failure. 2. Excellent toughness is essential as it allows the steel to absorb energy and resist fracture. This prevents sudden and catastrophic failure under impact or dynamic loading conditions. 3. Superior hardness is necessary to resist wear, abrasion, and indentation. It ensures that the material maintains its structural integrity and performance even in extreme conditions. 4. Good ductility is important alongside high tensile strength. It allows the steel to undergo plastic deformation without fracturing, making it suitable for forming or shaping during manufacturing. 5. Resistance to corrosion is vital to prevent degradation caused by moisture, chemicals, or harsh environments. This ensures the longevity and reliability of the steel in various conditions. 6. Heat resistance is required for applications involving high temperatures. It allows the steel to maintain its mechanical properties and structural stability under elevated temperatures. 7. Controlled alloying elements, such as chromium, molybdenum, nickel, or vanadium, are often added to enhance the steel's strength, toughness, hardness, and other desired properties. 8. Precise composition and microstructure are necessary to ensure consistent and predictable mechanical properties. This can be achieved through precise manufacturing processes like controlled cooling rates or heat treatments. By meeting these requirements, special steel used in high-strength applications can endure the demanding conditions it faces, providing reliable performance, longevity, and safety.
- Q:How does special steel contribute to the production of precision instruments?
- Special steel contributes to the production of precision instruments by offering high strength, durability, and resistance to corrosion. It provides the necessary stability and precision required for the manufacturing of sensitive components such as gears, bearings, and springs. Additionally, special steel's excellent machinability allows for intricate designs and precise shaping, ensuring the accuracy and reliability of the final product.
- Q:How does special steel contribute to the transportation industry?
- Special steel plays a crucial role in the transportation industry by providing strength, durability, and reliability to various components and structures. It is used in the construction of vehicle bodies, engines, chassis, and suspension systems, ensuring safety and longevity. Additionally, special steel's high resistance to corrosion and fatigue helps extend the lifespan of transportation equipment, reducing maintenance costs and enhancing efficiency. Overall, special steel enhances the performance, efficiency, and safety of vehicles, making it an invaluable material in the transportation industry.
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SD390 Steel Rebar with JIS Standard
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 160 m.t.
- Supply Capability:
- 500000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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