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 is corrosion-resistant tool steel used in the production of molds and dies?: Corrosion-resistant tool steel is commonly used in the production of molds and dies due to its ability to withstand exposure to corrosive environments. This steel helps to prevent rust and degradation, ensuring that the molds and dies maintain their structural integrity and dimensional accuracy over time. By using corrosion-resistant tool steel, manufacturers can produce high-quality molds and dies that are durable and resistant to wear and tear, ultimately improving the overall efficiency and longevity of the production process.

Q: What are the specific requirements for special steel used in nuclear applications?: The specific requirements for special steel used in nuclear applications include high resistance to corrosion, excellent mechanical properties, and the ability to withstand high temperatures and neutron irradiation. Additionally, the steel must possess low levels of impurities and be highly resistant to embrittlement. It must also be capable of maintaining its integrity and structural stability over long periods of time, ensuring the safety and reliability of nuclear systems.

Q: What are the environmental benefits of using special steel?: Special steel, also known as stainless steel, offers numerous environmental benefits. Firstly, it is highly durable and long-lasting, resulting in reduced waste and resource consumption over time. Additionally, stainless steel is 100% recyclable, allowing it to be repurposed indefinitely without any loss in quality. This recycling process requires significantly less energy compared to the production of new steel, leading to a considerable reduction in carbon emissions and environmental impact. Moreover, special steel is corrosion-resistant, eliminating the need for frequent replacements and reducing the use of resources and energy associated with maintenance. Overall, the environmental benefits of using special steel include decreased waste generation, lower energy consumption, reduced carbon emissions, and increased resource efficiency.

Q: What are the different methods for quenching special steel?: Quenching is a critical step in the heat treatment process of special steel, as it helps to achieve the desired mechanical properties and improve the material's hardness and strength. There are several methods for quenching special steel, each with its own advantages and considerations. 1. Oil Quenching: This is one of the most commonly used methods for quenching special steel. The steel component is immersed in oil, which acts as a cooling medium. Oil quenching provides a moderate rate of cooling, allowing for controlled and uniform hardening. It is suitable for a wide range of steel grades and can prevent cracking or distortion. 2. Water Quenching: Water quenching is a faster cooling method compared to oil quenching. It provides rapid heat extraction, resulting in higher hardness and strength. However, the high cooling rate can also lead to increased risk of cracking or distortion, especially with thicker sections. Water quenching is commonly used for low-alloy steels and some high-alloy steels. 3. Polymer Quenching: Polymer quenching involves using a specialized polymer solution as the cooling medium. This method provides a controlled cooling rate, offering a balance between the slower oil quenching and faster water quenching. Polymer quenching can be particularly suitable for steels with complex shapes or critical dimensions, as it reduces the risk of distortion and cracking. 4. Air Quenching: Air quenching is a slower cooling method that involves allowing the steel component to cool in ambient air. It is typically used for steels with lower hardenability, as it provides a more gradual cooling rate. Air quenching can help to reduce the risk of distortion and cracking, but it may result in lower hardness and strength compared to other quenching methods. 5. Salt Bath Quenching: Salt bath quenching involves immersing the steel component in a molten salt bath as the cooling medium. This method provides a controlled and uniform cooling rate, reducing the risk of distortion and cracking. Salt bath quenching is particularly suitable for complex-shaped or delicate parts, as it minimizes the thermal stress during cooling. It is important to note that the choice of quenching method depends on various factors, such as the steel grade, desired hardness, component size and shape, and the required mechanical properties. Proper selection and implementation of the quenching method are crucial to achieving the desired material characteristics and ensuring the overall quality of the special steel product.

Q: What are the main factors affecting the machinability of special steel?: Several key factors influence the machinability of special steel, which refers to its ease of cutting, shaping, and forming. 1. The chemical composition of special steel plays a crucial role in its machinability. Elements like carbon, chromium, nickel, and molybdenum can significantly impact the material's hardness, toughness, and cutting properties. For instance, higher carbon content can increase steel's hardness, making it more difficult to machine. 2. The hardness of special steel is a critical factor in determining its machinability. Harder steels require more cutting force and generate more heat during machining, leading to increased tool wear and reduced efficiency. On the other hand, softer steels are generally easier to machine but may result in lower tool life. 3. The heat treatment process applied to special steel can greatly influence its machinability. Treatments like annealing, tempering, or quenching can alter the steel's microstructure and mechanical properties, affecting how it responds to cutting forces. Proper heat treatment can improve machinability by reducing hardness and increasing toughness. 4. The size and distribution of grains within the steel also impact its machinability. Fine-grained steel tends to have better machinability compared to coarse-grained steel, as smaller grains offer more uniform cutting conditions and reduce the risk of tool damage. 5. Machining parameters, including cutting speed and feed rate, directly affect the machinability of special steel. Higher cutting speeds can increase tool wear and generate excessive heat, affecting surface finish and dimensional accuracy. Similarly, incorrect feed rates can cause chip formation problems, resulting in poor machinability. 6. The choice of cutting tool material and geometry is crucial for achieving optimal machinability. Different tool materials, like carbide or high-speed steel, have varying wear resistance and cutting properties. The tool geometry, including rake angle and clearance angle, also affects chip formation, cutting forces, and heat generation. 7. Adequate lubrication and cooling during machining are essential to enhance machinability. Lubricants or coolants help reduce friction and heat, prolong tool life, and improve chip evacuation. Additionally, they prevent workpiece deformation and improve surface finish. Considering these factors, it is important to carefully select the appropriate special steel grade, optimize machining parameters, and use suitable cutting tools and lubrication to achieve the desired machinability and maximize productivity.

Q: How does special steel perform in high-frequency applications?: Special steel, also known as high-speed steel (HSS), performs exceptionally well in high-frequency applications. This type of steel is specifically designed to withstand the extreme heat and stress generated in high-speed machining operations. The unique composition of special steel, which typically includes elements such as tungsten, molybdenum, cobalt, and vanadium, provides it with remarkable hardness, toughness, and wear resistance. These properties make it highly suitable for use in high-frequency applications where the material is subjected to rapid cutting speeds and frequent abrasion. Due to its excellent hardness, special steel can maintain its cutting edge even at elevated temperatures, ensuring superior performance in high-frequency applications. It exhibits minimal deformation or loss of cutting efficiency, which results in improved productivity and extended tool life. Moreover, its exceptional wear resistance allows it to withstand the constant friction and heat generated during high-speed machining operations, preventing premature tool failure. Furthermore, special steel possesses excellent thermal conductivity, which helps dissipate the heat generated during high-frequency applications. This feature is crucial for maintaining dimensional stability and preventing the material from warping or distorting under extreme temperatures. As a result, special steel tools can maintain their precision and accuracy even during prolonged high-frequency operations. In summary, special steel is highly effective in high-frequency applications due to its exceptional hardness, toughness, wear resistance, and thermal conductivity. Its ability to withstand extreme heat and stress, while maintaining cutting performance and dimensional stability, makes it the preferred choice for industries such as aerospace, automotive, and manufacturing where high-speed machining is essential.

Q: How does special steel contribute to the manufacturing aftermarket industry?: Special steel plays a significant role in the manufacturing aftermarket industry by offering enhanced performance, durability, and reliability in the production of various components and equipment. One of the key contributions of special steel is its ability to withstand extreme conditions, such as high temperatures, corrosive environments, or heavy loads. This makes it an ideal material for manufacturing critical parts used in industries like automotive, aerospace, energy, and machinery. In the manufacturing aftermarket industry, special steel is commonly used in the production of replacement parts for machinery or equipment that have become worn out or damaged over time. The use of special steel ensures that these replacement parts possess the necessary strength and resilience to meet the original equipment manufacturer (OEM) specifications. Furthermore, special steel allows for the development of innovative designs and the production of more efficient and lightweight components. This helps in improving the overall performance of the equipment, reducing energy consumption, and enhancing productivity. For example, in the automotive industry, special steel is used to manufacture lightweight engine components, resulting in improved fuel efficiency and reduced emissions. Moreover, the use of special steel in the manufacturing aftermarket industry contributes to the reduction of maintenance and downtime costs. By using high-quality steel, the longevity of the replacement parts is increased, reducing the frequency of repairs or replacements. This leads to a decrease in production downtime and associated costs, as well as improving the overall reliability of the equipment. Additionally, special steel offers a wide range of customization options, enabling manufacturers to tailor the material properties to specific requirements. This flexibility allows for the development of unique solutions and the production of specialized components that meet the demands of various industries. It also enables manufacturers to address specific challenges related to wear resistance, hardness, or toughness, which are crucial factors in the aftermarket industry. In conclusion, special steel contributes significantly to the manufacturing aftermarket industry by providing enhanced performance, durability, and reliability to replacement parts. Its ability to withstand extreme conditions, enable innovative designs, reduce maintenance costs, and offer customization options makes it an indispensable material in the production of components and equipment in various industries.

Q: What properties make special steel unique?: Special steel, also referred to as alloy steel, possesses distinct characteristics that differentiate it from other forms of steel. Firstly, special steel stands out due to its remarkable strength and hardness. It is specifically designed to resist deformation, making it ideal for applications that demand robust materials. Whether in the construction, automotive, or aerospace sectors, special steel provides the necessary durability and reliability. Another noteworthy attribute of special steel is its exceptional ability to resist corrosion. By incorporating certain alloying elements like chromium, nickel, or molybdenum, this type of steel becomes highly resistant to rust and other forms of corrosion. Consequently, special steel finds extensive use in marine environments, chemical plants, and oil and gas industries where exposure to harsh conditions is prevalent. Moreover, special steel displays excellent heat resistance. It can endure high temperatures without compromising its strength or structure, rendering it suitable for use in extreme heat environments such as power generation or furnace components. This property allows special steel to be employed in critical situations where other materials may fail or deteriorate. Special steel is renowned for its versatility and adaptability as well. Through the incorporation of various alloying elements and heat treatment processes, it can be customized to meet the specific requirements of different industries. This flexibility enables the creation of specialized alloys with unique properties, such as enhanced machinability, wear resistance, or improved magnetic properties, catering to a wide range of applications. In conclusion, the exceptional strength and hardness, superior corrosion resistance, excellent heat resistance, and adaptability of special steel make it an invaluable material in numerous industries. It enables the development of innovative and reliable products that meet specific industry needs.

Q: How does special steel play a role in the defense sector?: Special steel plays a crucial role in the defense sector due to its exceptional strength, durability, and resistance to heat, corrosion, and impact. It is used to manufacture various defense equipment and vehicles, including tanks, submarines, aircraft carriers, and ballistic missile systems. Special steel ensures the structural integrity and performance of these defense assets, providing enhanced protection, firepower, and overall operational efficiency in critical military operations.

Q: What are the main characteristics of pressure vessel steel forgings?: Pressure vessel steel forgings possess several key features that render them suitable for utilization in pressure vessels. Firstly, these forgings are renowned for their exceptional strength and toughness. This attribute is of utmost importance as pressure vessels typically encounter significant internal pressure, necessitating steel capable of withstanding such force without deformation or rupture. Meticulous design and manufacturing ensure that the forgings possess the requisite strength and toughness to endure these pressures. Secondly, pressure vessel steel forgings exhibit remarkable resistance to corrosion. Given that pressure vessels frequently house corrosive fluids or gases, it becomes imperative for the steel employed in their construction to possess corrosion resistance. This feature guarantees the durability and dependability of the pressure vessel. The steel forgings are often crafted with specific alloying elements that enhance their resistance to corrosion. A further notable characteristic of pressure vessel steel forgings lies in their ability to retain their mechanical properties at elevated temperatures. Pressure vessels may be subjected to heightened temperatures due to the nature of the processes or fluids they contain. The forgings are designed to maintain their strength and toughness even in these high-temperature conditions, thereby ensuring the safety and reliability of the pressure vessel. Moreover, pressure vessel steel forgings typically undergo stringent quality control measures during their manufacturing process. This is essential to ensure that the forgings meet the prescribed standards and specifications for pressure vessel applications. The manufacturing process incorporates comprehensive inspections, testing, and documentation to guarantee compliance with the necessary quality and safety requirements. In summary, the primary characteristics of pressure vessel steel forgings encompass high strength and toughness, exceptional corrosion resistance, the ability to endure high temperatures, and stringent quality control measures. These attributes render pressure vessel steel forgings ideal for utilization in pressure vessels, providing the requisite strength, reliability, and safety demanded by such applications.

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