Bs4449 500B Reinforcing Steel Rebar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 140 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
Bs4449 500B Reinforcing Steel Rebar
Description of Bs4449 500B Reinforcing Steel Rebar
1, Diameter: 5.5mm-10mm Bs4449 500B Reinforcing Steel Rebar
10m- 40mm Bs4449 500B Reinforcing Steel Rebar
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 Bs4449 500B Reinforcing Steel Rebar
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 Bs4449 500B Reinforcing Steel Rebar
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:What are the main factors affecting the fracture toughness of special steel?
- The fracture toughness of special steel is influenced by several main factors. 1. Alloy composition: The specific chemical composition of the steel, including the type and amount of alloying elements, greatly affects its fracture toughness. Elements like chromium, nickel, and molybdenum can improve the toughness by promoting the formation of fine-grained microstructures or enhancing the steel's ability to resist crack propagation. 2. Heat treatment: The heat treatment process, including the temperature and duration of heating and cooling, plays a crucial role in determining the fracture toughness. Proper heat treatment can refine the microstructure and eliminate potential defects, enhancing the steel's resistance to fracture. 3. Microstructure: The microstructure of the steel, such as grain size and distribution, phase composition, and presence of inclusions, significantly affects its fracture toughness. Fine-grained structures generally exhibit higher toughness due to improved resistance to crack propagation. 4. Presence of defects: The presence of defects like cracks, voids, or inclusions in the steel can act as stress concentrators, reducing its fracture toughness. These defects can initiate cracks and propagate them more easily, leading to lower toughness. 5. Temperature: Fracture toughness is temperature-dependent, and the behavior of special steel can vary significantly at different temperatures. Some steels exhibit improved toughness at low temperatures due to the transformation of the microstructure, while others may experience reduced toughness at elevated temperatures due to the softening of the material. 6. Loading conditions: The fracture toughness of special steel can also be influenced by the loading conditions, such as the rate of loading or the presence of dynamic loading. Higher loading rates or dynamic loading can result in reduced toughness as the steel may not have sufficient time to deform and absorb energy before fracture. 7. Mechanical properties: The mechanical properties of the steel, such as strength, hardness, and ductility, can affect its fracture toughness. Higher strength and hardness can sometimes lead to lower toughness, as the material becomes more brittle. However, a balance between strength and toughness can be achieved by carefully selecting the alloy composition and heat treatment parameters. Overall, the fracture toughness of special steel is a complex interplay of various factors, including alloy composition, heat treatment, microstructure, defects, temperature, loading conditions, and mechanical properties. Optimizing these factors can help enhance the fracture toughness of special steel for specific applications.
- Q:How does nitriding steel improve hardness and wear resistance?
- Nitriding steel improves hardness and wear resistance by introducing nitrogen into the surface of the material. This process forms nitrides, which are hard compounds that increase the surface hardness of the steel. Additionally, the nitrides create a protective layer that enhances the material's resistance to wear, erosion, and corrosion.
- Q:What is the role of carbon in special steel?
- Special steel relies on carbon to significantly impact its properties and performance. This type of steel is specifically engineered to showcase exceptional characteristics like high strength, hardness, wear resistance, and corrosion resistance. Carbon is a key alloying element in special steel, and its content dictates many of these desired properties. To begin, carbon is responsible for enhancing the strength and hardness of special steel. When carbon is introduced into the iron matrix, it forms iron carbides, which are exceptionally hard and provide structural integrity to the steel. The higher the carbon content, the greater the steel's hardness and strength. Consequently, special steel is well-suited for applications that demand high toughness, durability, and resistance to deformation, such as the manufacturing of tools, dies, and industrial machinery components. Additionally, carbon contributes to the wear resistance of special steel. The presence of carbon enhances the steel's ability to withstand abrasion and endure extreme conditions. This is especially important in industries like mining, construction, and oil and gas, where components face intense wear and friction. Moreover, carbon plays a crucial role in determining the machinability and weldability of special steel. The carbon content influences how the steel responds to heat treatment, affecting its ease or difficulty of machining and welding. Striking the right balance of carbon content is essential to ensure that special steel can be easily worked on and fabricated into complex shapes without compromising its properties. Lastly, carbon influences the corrosion resistance of special steel. Although steel is generally susceptible to corrosion, the addition of specific amounts of carbon can enhance its resistance to rusting and other forms of corrosion. This is particularly important in applications where the steel is exposed to harsh environments, such as in the marine or chemical industries. In conclusion, carbon plays a vital role in special steel by enhancing its strength, hardness, wear resistance, machinability, weldability, and corrosion resistance. The precise amount of carbon added to the steel is carefully controlled to achieve the desired properties for specific applications. This versatility and sought-after nature make special steel a highly valued material across various industries.
- Q:How is HSLA steel used in the construction industry?
- HSLA (High-Strength Low-Alloy) steel is commonly used in the construction industry for various applications. It offers increased strength, durability, and better resistance to corrosion compared to conventional carbon steel. HSLA steel is used in the construction of bridges, buildings, pipelines, and other structures where high strength and reliability are required. Additionally, it can be found in structural components like beams, columns, and trusses, as well as in reinforcement bars and plates. Overall, HSLA steel plays a crucial role in enhancing the safety, longevity, and overall performance of construction projects.
- Q:What are the challenges in heat treatment of special steel?
- Some challenges in the heat treatment of special steel include achieving the desired hardness and strength without compromising other properties, such as toughness and corrosion resistance. Special steels often have complex compositions, which can make it difficult to accurately control the heat treatment process. Additionally, heat treatment of special steel can be time-consuming and costly due to the need for precise temperature and time control, as well as the potential for distortion or cracking during the heat treatment process.
- Q:How does special steel contribute to improving product safety in high-risk industries?
- Special steel plays a crucial role in enhancing product safety in high-risk industries due to its unique properties. Its exceptional strength, durability, and resistance to corrosion and wear make it ideal for manufacturing critical components in sectors like aerospace, automotive, and energy. By using special steel, manufacturers can ensure that their products can withstand extreme conditions, reducing the risk of failure or malfunction. This, in turn, enhances the safety of the end-users and prevents potential accidents or disasters in high-risk industries.
- Q:What are the different methods for improving the heat resistance of special steel?
- There are various techniques available to enhance the heat resistance of special steel. These techniques comprise: 1. Alloying: Enhancing the heat resistance of steel can be achieved by alloying it with specific elements. The addition of chromium, nickel, or molybdenum, for instance, significantly augments the steel's ability to withstand high temperatures. 2. Heat treatment: Heat treatment processes like annealing, quenching, and tempering can be employed to enhance the heat resistance of special steel. These processes refine the steel's microstructure and enhance its mechanical properties, including heat resistance. 3. Surface modification: The heat resistance of special steel can be improved by applying specialized coatings or surface treatments. Processes such as nitriding, carburizing, or ceramic coating create a protective layer on the steel's surface, preventing oxidation and enhancing its ability to withstand high temperatures. 4. Grain refinement: Heat resistance can be improved by controlling the grain size of the steel through processes like grain refinement or recrystallization. Smaller grain sizes reduce the diffusion of atoms within the material, making it more resistant to high temperatures. 5. Precipitation hardening: Precipitation hardening involves the formation of small particles within the steel matrix, strengthening the material and improving its resistance to heat. This technique requires a specific heat treatment process to enable the formation of these particles. 6. Controlled cooling: Optimizing the cooling process after heat treatment can also enhance the heat resistance of special steel. By controlling the cooling rate, the formation of unwanted phases or microstructural defects can be minimized, ensuring better heat resistance. 7. Material selection: Selecting the appropriate type of special steel with inherent high heat resistance properties is another method to improve heat resistance. Stainless steel, tool steel, or superalloys, for instance, are renowned for their excellent heat resistance and are often chosen for applications involving high temperatures. It is important to note that the choice of the suitable method or combination of methods for enhancing heat resistance depends on the specific requirements and limitations of the application.
- Q:What are the different surface treatment methods for special steel?
- There are several surface treatment methods for special steel, including but not limited to: hot-dip galvanizing, electroplating, powder coating, painting, and nitriding. Each method offers unique benefits and is chosen based on the specific requirements of the application, such as corrosion resistance, aesthetic appeal, or improved hardness.
- Q:How does aluminum contribute to the properties of special steel?
- Aluminum is commonly added as an alloying element in special steel to enhance its properties. By adding aluminum to steel, several improvements can be achieved. Firstly, aluminum improves the strength of steel by forming a fine dispersion of aluminum nitride particles within the steel matrix. These particles act as barriers to dislocation movement, impeding the deformation of the steel and increasing its strength. This makes the steel more resistant to mechanical stresses and enhances its load-bearing capacity. Secondly, aluminum also enhances the corrosion resistance of steel. It forms a protective oxide layer on the surface of the steel, acting as a barrier against the corrosive agents. This oxide layer prevents the steel from oxidizing, rusting, and deteriorating over time, making it more durable and long-lasting in various environments. Additionally, aluminum can improve the machinability of special steel. Its presence in the steel composition reduces the tendency of the steel to work harden during machining operations. This makes it easier to cut, drill, or shape the steel, resulting in improved productivity and reduced tool wear. Moreover, aluminum contributes to the heat resistance of special steel. It has a high melting point and good thermal conductivity, which helps in maintaining the structural integrity of the steel at elevated temperatures. This makes aluminum-steel alloys suitable for applications where high-temperature resistance is required, such as in the aerospace and automotive industries. In summary, aluminum contributes significantly to the properties of special steel. It enhances the strength, corrosion resistance, machinability, and heat resistance of steel, making it a versatile material with a wide range of applications.
- Q:How does electrical steel minimize energy losses in electrical devices?
- Electrical steel minimizes energy losses in electrical devices through its unique magnetic properties and composition. It is specifically designed to have low electrical conductivity and high magnetic permeability, which reduces eddy current losses and hysteresis losses. These losses occur due to the alternating magnetic fields generated in electrical devices, such as transformers and motors. By using electrical steel, these losses are minimized, resulting in more efficient energy transfer and reduced energy wastage.
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Bs4449 500B Reinforcing Steel Rebar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 140 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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