Bs4449 Deformed Steel Bar with All Sizes

Bs4449 Deformed Steel Bar with All Sizes System 1

Bs4449 Deformed Steel Bar with All Sizes System 2

Bs4449 Deformed Steel Bar with All Sizes System 3

Bs4449 Deformed Steel Bar with All Sizes

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 50000 m.t./month

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Bs4449 Deformed Steel Bar with All Sizes

Description of Bs4449 Deformed Steel Bar:

1, Diameter: 5.5mm-10mm rounds reinforcing steel bar

10m- 40 rods reinforcing Bs4449 Deformed Steel Bar

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 Deformed Steel Bar:

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

Product Show of Bs4449 Deformed Steel Bar:

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.

Verified Suppliers Bs4449 Deformed Steel Bar Manufacturer

FAQ:

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: How does the heat treatment process affect the hardness of special steel?: The heat treatment process has a significant impact on the hardness of special steel. Heat treatment involves heating the steel to a specific temperature, holding it at that temperature for a certain period, and then cooling it at a controlled rate. This process alters the microstructure of the steel, which in turn affects its hardness. One of the most common heat treatment techniques is quenching, which involves rapid cooling of the steel. Quenching results in the formation of a hard and brittle microstructure called martensite. The rapid cooling prevents the formation of other softer microstructures, such as pearlite or ferrite, and thus increases the hardness of the steel. Another heat treatment process that affects the hardness of special steel is tempering. After quenching, the steel is often tempered to reduce its brittleness and improve its toughness. Tempering involves reheating the quenched steel to a lower temperature and then slowly cooling it. This process allows for the transformation of some of the martensite into a more ductile microstructure, such as tempered martensite or bainite. These microstructures retain some of the hardness of martensite but also provide improved toughness and resistance to fracture. In summary, the heat treatment process significantly affects the hardness of special steel. Quenching increases hardness by forming martensite, while tempering balances hardness with improved toughness. The specific heat treatment parameters, such as temperature and cooling rate, can be adjusted to achieve the desired hardness and mechanical properties for different applications of special steel.

Q: What are the main factors affecting the cost of special steel?: The main factors affecting the cost of special steel include the cost of raw materials, such as iron ore and alloying elements, production and manufacturing costs, market demand and competition, transportation and logistics expenses, and global economic factors such as currency exchange rates and trade policies. Additionally, the complexity and uniqueness of the steel's composition and processing requirements can also impact its cost.

Q: What are the main characteristics of electrical steel forgings?: Electrical applications greatly benefit from the numerous advantageous features possessed by electrical steel forgings. Firstly, their low core loss property minimizes energy loss as heat during the magnetic cycle, making them exceptionally suitable for devices like transformers, motors, and generators. Consequently, the overall efficiency and performance of these devices are significantly enhanced. Secondly, electrical steel forgings exhibit high magnetic permeability, enabling them to conduct magnetic flux with ease. This attribute facilitates effective magnetic induction and maximizes the strength of the magnetic field in electrical components. As a result, energy conversion and transmission are efficiently achieved. Moreover, electrical steel forgings possess low coercivity, indicating that they require minimal magnetic field strength for magnetization and demagnetization. This characteristic results in quicker and more precise magnetic switching in electrical devices, leading to improved performance and reduced energy losses. Additionally, electrical steel forgings possess high electrical resistivity, which effectively restricts the flow of electrical current and diminishes energy losses due to eddy currents. This attribute is particularly vital in applications where electrical steel forgings are subjected to rapidly changing magnetic fields, such as in power transformers. Lastly, to further enhance their electrical performance and prevent short circuits or electrical leakage, electrical steel forgings are often treated with surface insulation coatings or coatings with high electrical resistivity. In conclusion, electrical steel forgings offer a range of essential characteristics including low core loss, high magnetic permeability, low coercivity, high electrical resistivity, and the ability to be coated for insulation. These properties make them indispensable in various electrical applications, ensuring efficient energy conversion, reduced losses, and reliable performance.

Q: What are the different methods of surface carburizing for special steel?: Some of the different methods of surface carburizing for special steel include pack carburizing, gas carburizing, liquid carburizing, and plasma carburizing.

Q: What is the role of heat treatment in special steel?: Enhancing the properties and performance of special steel is of utmost importance, and heat treatment plays a vital role in achieving this. Special steel refers to alloys that are deliberately designed to possess unique characteristics such as high strength, corrosion resistance, or heat resistance. To alter the microstructure of the steel and attain the desired properties, heat treatment involves subjecting it to controlled heating and cooling processes. Improving the mechanical properties of special steel is one of the primary functions of heat treatment. By carefully regulating the temperature during heating and controlling the rate of cooling, the steel's hardness, strength, and toughness can be greatly enhanced. For instance, procedures like quenching and tempering significantly increase the steel's strength and resistance to wear and fatigue. This makes it suitable for applications requiring high strength and durability, such as machinery, tools, or aerospace components. Heat treatment also plays a crucial role in optimizing the steel's resistance to corrosion. Special steel is frequently used in environments where it is exposed to harsh conditions like corrosive chemicals or high temperatures. By subjecting the steel to specific heat treatment processes like annealing or precipitation hardening, a more stable microstructure is developed, improving its resistance to corrosion and oxidation. This ensures that the special steel retains its structural integrity and performance even in challenging environments. Furthermore, heat treatment can modify the steel's heat resistance properties. Special steel often finds applications in industries where it is exposed to high temperatures, such as turbines or exhaust systems. Through heat treatment techniques like normalization or hardening, the steel can be made more resistant to deformation, cracking, or softening at elevated temperatures. This allows the special steel to maintain its strength and structural integrity even under extreme heat conditions. To summarize, heat treatment is crucial in optimizing the mechanical, corrosion resistance, and heat resistance properties of special steel. By carefully manipulating the steel's microstructure through controlled heating and cooling processes, heat treatment enhances its strength, durability, and performance, making it suitable for a wide range of demanding applications.

Q: What are the limitations of using special steel in high-temperature applications?: The utilization of special steel in high-temperature scenarios comes with its own set of constraints. One notable limitation is the potential for thermal expansion. Similar to other materials, special steel expands when subjected to high temperatures. This expansion can result in changes in dimensions and internal stress, which can impact the overall performance and integrity of the structure. Another constraint is the likelihood of oxidation and corrosion. Elevated temperatures can expedite the oxidation process, leading to the formation of oxides on the steel's surface. These oxides can cause corrosion and weaken the material over time. To counteract this drawback, special steel alloys with enhanced resistance to oxidation and corrosion are frequently employed in high-temperature applications. Additionally, special steel may experience a decrease in strength at higher temperatures. The mechanical properties of the material, such as tensile strength and hardness, can be significantly diminished as the temperature rises. This reduction in strength can compromise the structural integrity of the component, making it more susceptible to failure. Lastly, special steel may possess a limited temperature range within which its desired properties can be maintained. Beyond a certain temperature threshold, the material may undergo phase transformations or experience degradation, resulting in a loss of its intended characteristics. It is crucial to carefully assess the operating temperature and select the appropriate special steel alloy with a suitable temperature range for the specific high-temperature application. In conclusion, while special steel presents numerous advantages for high-temperature applications, such as exceptional strength, durability, and heat resistance, it is vital to acknowledge its limitations. Considerations such as thermal expansion, oxidation and corrosion, reduced strength at high temperatures, and temperature restrictions must be taken into account and addressed when utilizing special steel in these applications.

Q: Is special steel suitable for structural applications?: Yes, special steel is suitable for structural applications. Special steel refers to high-quality steel that is specially engineered to have specific properties and characteristics to meet the demands of various applications. It is often used in industries such as construction, automotive, aerospace, and oil and gas. Special steel is known for its exceptional strength, durability, and resistance to corrosion, making it an ideal material for structural applications. It can withstand heavy loads, high temperatures, and extreme weather conditions, ensuring the safety and longevity of structures. Additionally, special steel offers excellent weldability, machinability, and formability, allowing for flexibility in design and construction. It can be easily shaped, fabricated, and assembled into various structural components, making it suitable for complex and unique projects. Furthermore, special steel is available in a wide range of grades and types, each with specific properties tailored for different structural requirements. These include carbon steel, alloy steel, stainless steel, and tool steel, among others. This versatility allows engineers and designers to select the most suitable type of special steel for their specific application, ensuring optimal performance and cost-effectiveness. In conclusion, special steel is highly suitable for structural applications due to its exceptional strength, durability, resistance to corrosion, and flexibility in design. Its wide range of grades and types offers engineers and designers the ability to choose the most appropriate material for their specific project requirements.

Q: How does special steel contribute to the electrical resistance of products?: Special steel can contribute to the electrical resistance of products by providing a higher resistance to the flow of electric current. This is achieved by alloying the steel with specific elements that increase its resistivity, making it suitable for applications where low electrical conductivity is desired.

Q: How does special steel perform in terms of thermal conductivity?: Special steel typically has lower thermal conductivity compared to other materials. This means that it is not as efficient in conducting heat and may retain heat for longer periods of time.

Q: How does special steel compare to other high-performance materials?: Special steel, being a high-performance material itself, offers several advantages over other high-performance materials. Its exceptional strength, durability, and resistance to corrosion make it a preferred choice in various industries. Furthermore, special steel can withstand extreme temperatures and pressures, making it ideal for applications that demand reliability and performance under challenging conditions. In terms of cost-effectiveness, special steel often proves to be more economical compared to other high-performance materials. Overall, special steel's unique combination of properties sets it apart and makes it a reliable and versatile option in comparison to other high-performance materials.

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