HRB 400 Steel Rebar, Deformed Steel Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 1000 m.t./month
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Specification
Type:
Deformed Steel
Shape:
Steel Round Bar
HRB 400 Steel Rebar, Deformed Steel Bar
Product information
1. Produce Standard: GB, AISI, ASTM, SAE, EN, BS, DIN, JIS
2. Produce processes: Smelt Iron -EAF smelt Billet - ESR smelt Billet -Hot rolled or forged get the steel round bar and plate
3. Heat treatment: Normalized / Annealed / Quenched+Tempered
4. Quality assurance: All order we can received third party inspection, You can let SGS, BV,.. and others test company test and inspect our products before Goods shipping.
Product detail
deformed steel bar steel rebar Chemical components (%)
| Grade | C | Si | Mn | P | S | Ceq |
| HRB335 | 0.25 | 0.8 | 1.6 | 0.45 | 0.45 | 0.52 |
| HRB400 | 0.25 | 0.8 | 1.6 | 0.45 | 0.45 | 0.55 |
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- Q: What are the main factors affecting the wear resistance of special steel?
- There are several main factors that affect the wear resistance of special steel. Firstly, the composition of the steel plays a crucial role. The addition of certain alloying elements, such as chromium, vanadium, and tungsten, can significantly enhance the wear resistance of the steel. These elements form hard carbides or nitrides within the steel matrix, which increase its hardness and resistance to wear. Secondly, the heat treatment process used on the steel greatly influences its wear resistance. Through processes like quenching and tempering, the steel can be hardened to achieve a desired level of wear resistance. The heat treatment also helps in refining the microstructure of the steel, making it more resistant to wear and deformation. Thirdly, the microstructure of the steel is another important factor. The presence of fine grains and a homogeneous distribution of carbides or other reinforcing phases within the steel matrix greatly enhances its wear resistance. Additionally, the presence of retained austenite, a metastable phase, can also contribute to improved wear resistance. Furthermore, the hardness of the steel is a key determinant of its wear resistance. A higher hardness level generally translates to better wear resistance, as it provides resistance against the abrasive forces acting on the steel surface. Lastly, the design and surface finish of components made from special steel also affect their wear resistance. The shape, size, and surface roughness of the components can influence the distribution and magnitude of the contact stresses on the steel, thereby affecting its wear resistance. In conclusion, the wear resistance of special steel is influenced by factors such as its composition, heat treatment, microstructure, hardness, and the design and surface finish of the components. By carefully considering these factors, engineers can optimize the wear resistance of special steel for various applications.
- Q: What is the cost difference between regular steel and special steel?
- The cost difference between regular steel and special steel can vary significantly depending on various factors such as the specific type of special steel, its grade, production techniques, and market demand. In general, special steel tends to be more expensive than regular steel due to its enhanced properties, specific alloy compositions, and specialized production processes. However, it is important to note that the cost difference may fluctuate and it is best to consult with suppliers or conduct market research for accurate and up-to-date pricing information.
- Q: How is special steel used in the production of automotive parts?
- Special steel is used in the production of automotive parts due to its exceptional strength, durability, and resistance to wear and corrosion. It is commonly used for manufacturing critical components such as engine parts, chassis, drive shafts, and suspension systems. Special steel helps enhance the overall performance, safety, and longevity of automobiles, making them more reliable and efficient on the road.
- Q: What are the different types of tool steels used in special steel?
- Special steel applications commonly utilize various types of tool steels, each designed to possess exceptional hardness, wear resistance, toughness, and heat resistance. These steels are ideal for tooling and cutting applications. Some of the types of tool steels used in special steel are as follows: 1. Carbon Tool Steel: With high carbon content ranging from 0.60% to 1.5%, this type offers excellent hardness and wear resistance, making it suitable for drills, taps, and cutting tools. 2. High-Speed Steel (HSS): HSS is an alloy steel containing elements like tungsten, molybdenum, chromium, and vanadium. It provides exceptional heat resistance, hardness, and toughness, retaining its cutting edge even at high temperatures. HSS is commonly used in drill bits, milling cutters, and other cutting tools. 3. Cold Work Tool Steel: Specifically designed for room temperature or lower temperatures, this type offers excellent toughness, wear resistance, and strength. It is used in blanking, piercing, and forming dies. 4. Hot Work Tool Steel: Developed to withstand high temperatures without sacrificing hardness and strength, these steels possess good thermal conductivity, resistance to thermal fatigue, and deformation. They find applications in forging dies, extrusion dies, and die casting molds. 5. Shock-Resisting Tool Steel: Designed to resist shock and impact loads, this type offers excellent toughness, strength, and wear resistance. It is commonly used in hammers, chisels, and pneumatic tools. 6. Stainless Tool Steel: Stainless tool steels contain high levels of chromium, providing excellent corrosion resistance. They are used in applications where resistance to rust and corrosion is crucial, such as surgical instruments, molds, and cutlery. 7. Powder Metallurgy Tool Steel: Manufactured using a powder metallurgy process, these steels offer precise control over composition and microstructure. They exhibit excellent wear resistance, high toughness, and good machinability, finding applications in high-speed cutting tools and forming tools. Overall, the various types of tool steels used in special steel applications possess a wide range of characteristics and properties to meet the specific requirements of cutting, forming, and tooling applications.
- Q: How does special steel perform in high-temperature corrosion?
- Special steel has been specifically engineered to excel in environments with high-temperature corrosion. Its exceptional properties grant it exceptional resistance against oxidation and corrosive reactions when subjected to elevated temperatures. The high chromium content found in special steel is a key factor contributing to its performance in high-temperature corrosion. Chromium creates a protective oxide layer, referred to as a passive film, which functions as a barrier against corrosive elements. This passive film remains stable even under high temperatures, successfully preventing oxidation and corrosion. Furthermore, special steel often incorporates additional alloying elements like nickel, molybdenum, and titanium, which further enhance its ability to resist high-temperature corrosion. These elements augment the steel's capacity to withstand aggressive chemical environments typically encountered in industrial processes involving high temperatures and corrosive substances. Moreover, special steel is renowned for its remarkable mechanical properties, which encompass high strength and toughness. These qualities enable the steel to endure the harsh conditions associated with high-temperature corrosion. Even when exposed to extreme temperatures and corrosive chemicals, it can retain its structural integrity and dimensional stability. In conclusion, special steel's exceptional resistance against high-temperature corrosion makes it the ideal choice for various applications in industries such as petrochemical, power generation, and aerospace. Its capacity to maintain performance and durability in challenging environments guarantees the longevity and reliability of equipment and structures, ultimately reducing maintenance and replacement expenses.
- Q: Can special steel be used in the construction equipment manufacturing industry?
- Yes, special steel can be used in the construction equipment manufacturing industry. Special steel is known for its exceptional strength, durability, and resistance to wear and tear, making it suitable for constructing heavy-duty machinery and equipment used in the construction industry. It offers superior performance in challenging and demanding applications, ensuring the longevity and reliability of the manufactured equipment. Additionally, special steel can be tailored to meet specific requirements and improve the functionality and efficiency of construction equipment.
- Q: What are the different methods of surface carburizing for special steel?
- Surface carburizing is a heat treatment process used to increase the carbon content at the surface of steel, resulting in a hardened outer layer. There are several methods of surface carburizing for special steel, each with its own advantages and disadvantages. 1. Gas Carburizing: This method involves exposing the steel to a carbon-rich gas, such as methane or propane, at elevated temperatures. The gas reacts with the steel surface, depositing carbon and forming a hardened layer. Gas carburizing is a widely used method due to its versatility, controllability, and ability to produce uniform and deep case depths. However, it requires specialized equipment and longer processing times. 2. Pack Carburizing: In this method, the steel is packed in a container with a carbon-rich material, such as charcoal or carbon powder. The container is then heated to high temperatures, allowing carbon to diffuse into the steel surface. Pack carburizing is a cost-effective method, but it is relatively slower and less controllable compared to gas carburizing. 3. Liquid Carburizing: Also known as cyaniding, this method involves immersing the steel in a liquid bath containing a carbon-rich compound, such as sodium cyanide. The bath is heated to high temperatures, which enables carbon diffusion into the surface of the steel. Liquid carburizing is a fast and cost-effective method, but it requires careful handling of toxic chemicals and may result in lower case depths compared to other methods. 4. Plasma Carburizing: This method utilizes a plasma discharge to provide a carbon-rich atmosphere around the steel surface. The plasma contains hydrocarbons, which dissociate into carbon atoms that diffuse into the steel. Plasma carburizing offers precise control over case depth and can achieve high surface hardness. However, it requires specialized equipment and is generally more expensive than other methods. 5. Salt Bath Carburizing: In this method, the steel is immersed in a molten salt bath containing carbon-rich compounds. The salt bath is heated to high temperatures, allowing carbon to diffuse into the steel surface. Salt bath carburizing is a versatile method that can achieve high case depths and excellent surface hardness. However, it requires careful temperature control and can be challenging to remove the salt residues after the process. It is important to select the appropriate method of surface carburizing based on the specific requirements of the special steel, such as desired case depth, hardness, and cost considerations.
- Q: What are the different welding techniques for special steel?
- There are several different welding techniques that can be used for special steel, depending on the specific requirements and characteristics of the steel. Some of the commonly used welding techniques for special steel include: 1. Shielded Metal Arc Welding (SMAW): Also known as stick welding, SMAW uses a consumable electrode coated in flux to create an arc between the electrode and the base metal. This technique is versatile and can be used for a wide range of steel types, including special steel. 2. Gas Metal Arc Welding (GMAW): Also known as MIG (Metal Inert Gas) welding, GMAW uses a continuous solid wire electrode and a shielding gas to protect the weld from atmospheric contamination. This technique is commonly used for thinner special steel materials. 3. Flux-Cored Arc Welding (FCAW): Similar to GMAW, FCAW uses a continuous tubular electrode filled with flux. This flux provides additional shielding and can allow for higher deposition rates. FCAW is suitable for special steel with thick sections or when welding in outdoor or windy conditions. 4. Gas Tungsten Arc Welding (GTAW): Also known as TIG (Tungsten Inert Gas) welding, GTAW uses a non-consumable tungsten electrode and a shielding gas. This technique is known for its precision and is often used for special steel alloys that require high-quality and aesthetically pleasing welds. 5. Plasma Arc Welding (PAW): PAW is similar to GTAW but uses a more focused arc created by passing gas through a constricted nozzle. This technique is often used for special steel alloys that have higher melting temperatures or require deeper penetration. 6. Submerged Arc Welding (SAW): SAW involves feeding a continuous wire electrode into a molten flux layer that covers the weld. This technique is commonly used for heavy and thick special steel sections, as it provides excellent penetration and high deposition rates. It is important to choose the most appropriate welding technique for special steel based on factors such as the steel composition, thickness, intended application, and desired weld quality. Consulting with a qualified welding professional or referring to the steel manufacturer's recommendations can help ensure the best welding technique is selected for the specific special steel being used.
- Q: How does special steel contribute to improving product sustainability?
- Special steel contributes to improving product sustainability in several ways. Firstly, it offers enhanced durability and strength, which means that products made from special steel have a longer lifespan and reduced need for frequent replacements. This reduces the overall impact on the environment by minimizing waste generation and conserving resources. Secondly, special steel often has high corrosion resistance, making it suitable for use in various industries, including construction, automotive, and aerospace. This resistance to corrosion ensures that products made from special steel require less maintenance and repairs over time, reducing the consumption of energy, materials, and resources. Additionally, special steel can be recycled and reused efficiently. This recyclability reduces the demand for new raw materials, decreases energy consumption, and minimizes greenhouse gas emissions associated with the production of steel from virgin materials. By using recycled special steel, companies can contribute to a circular economy and reduce their environmental footprint. Overall, the utilization of special steel in various products contributes to their longevity, reduced maintenance needs, and recyclability, all of which are essential for improving product sustainability and minimizing environmental impact.
- Q: Can special steel be coated or plated?
- Yes, special steel can be coated or plated. Coatings or platings are often applied to special steel to enhance its corrosion resistance, improve its appearance, or provide additional properties such as increased hardness or lubricity. These coatings can be achieved using various methods such as electroplating, hot-dip galvanizing, powder coating, or physical vapor deposition.
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HRB 400 Steel Rebar, Deformed Steel Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 1000 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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