Reinforced Building Steel Bars Deformed Steel

Reinforced Building Steel Bars Deformed Steel System 1

Reinforced Building Steel Bars Deformed Steel

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Reinforced Building Steel Bars Deformed Steel

Product Information:

Specifications

1.Type:Metal Building Material
2.Material:Steel
3.Use:Building
4.Feature:Reinforced

Chemical Composition(%)

C	Si	Mn	P	S	B	Cr	Cu	V	Mo	CEQ
0.19	0.13	0.41	0.037	0.018	0.0015	0	0	0	0	0.26

Product Overviews:

Product Name	Typical Grades	Diameter(mm)	Standard adopted
Carbon Steel	20 (1020/S20C/C22)	Ø16-Ø300	GB/SAE/JIS/DIN
	40 (1040/S40C/C40)
	45 (1045/S45C/C45)
Bearing Steel	GCr9 (51100/SUJ1)	Ø12-Ø250
	GCr15 (52100/SUJ2/100Gr6)
	GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel	20Cr (5120/SCr420H/20Cr4)	Ø12-Ø250
	40Cr (5140/SCr440/41Cr4)
	42CrMo(4140/SCM440/42CrMo4)
Gear Steel	20CrNiMo	Ø16-Ø600
	20CrMn(5115/SMnC420/20MnCr5)
	20CrNiMo(8620/SNCM220/20CrMiMo2)

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Reinforced Building Steel Bars Deformed Steel

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· Industry experience over 20 years.

· Shipment of goods -More than 70 countries worldwide.

· The most convenient transport and prompt delivery.

· Competitive price with best service.

· High technical production line with top quality products.

· High reputation based on best quality products.

With our experienced, enthusiastic and dynamic staffs, we assure to bring you the products with best quality, reasonable prices and good after-sales services under the motto: Friends First, Business After.

Communication, Experience, Expertise and Best efforts are our Promises to you.

Q:How does quenching and tempering affect the hardness of special steel?: Special steel can have its hardness and mechanical properties improved through the use of heat treatment processes known as quenching and tempering. During quenching, the steel undergoes rapid cooling from a high temperature to either room temperature or below. This is typically achieved by immersing the steel in a quenching medium like oil or water. The quick cooling results in the formation of a martensitic structure, which is characterized by high hardness and brittleness. Quenching significantly enhances the hardness of the steel. However, the brittleness of the martensitic structure limits its usability in many applications. To address this issue, the steel then undergoes tempering. Tempering entails reheating the quenched steel to a temperature below the lower critical temperature, usually ranging from 200 to 600 degrees Celsius. The steel is held at this temperature for a specific period of time. This process facilitates the transformation of the brittle martensite into a more ductile structure known as tempered martensite. Tempering reduces the hardness of the steel but imparts improved toughness and ductility. The actual hardness achieved after tempering depends on the tempering temperature and time. Higher temperatures and longer times result in a greater reduction in hardness. By carefully adjusting the tempering parameters, a balance between hardness and toughness suitable for the intended application can be achieved. To summarize, quenching and tempering have a significant impact on the hardness of special steel. Quenching increases hardness by creating a martensitic structure, while tempering reduces hardness but enhances toughness and ductility. The specific hardness achieved through these processes can be controlled by adjusting the quenching and tempering parameters to meet the desired mechanical properties for the specific application.

Q:How is corrosion-resistant steel used in marine applications?: Corrosion-resistant steel is widely used in marine applications due to its ability to withstand the harsh and corrosive conditions of the marine environment. It is commonly used in the construction of ships, offshore platforms, and marine equipment. The steel's corrosion resistance properties help to prevent rusting and corrosion caused by saltwater, moisture, and other environmental factors. This increases the durability and longevity of marine structures, ensuring their safe operation and reducing maintenance costs.

Q:What are the different methods of surface polishing for special steel?: There are several methods of surface polishing for special steel, each with its own advantages and applications. Some of the commonly used methods include mechanical polishing, electrochemical polishing, and chemical polishing. 1. Mechanical Polishing: This method involves the use of abrasive materials to remove surface imperfections and create a smooth and reflective surface. It can be done manually or using automated polishing machines. Mechanical polishing is effective for removing scratches, dents, and other surface defects. It is commonly used in industries such as automotive, aerospace, and precision engineering. 2. Electrochemical Polishing: Also known as electrolytic polishing, this method uses an electrolyte solution and an electric current to dissolve and remove surface material. Electrochemical polishing can provide a high level of surface smoothness and can be particularly useful for complex shapes and hard-to-reach areas. It is commonly used in industries such as medical devices, semiconductors, and jewelry manufacturing. 3. Chemical Polishing: This method involves the use of chemical solutions to selectively remove surface material and create a smooth finish. Chemical polishing is effective for removing oxide layers, stains, and contaminants. It is often used for stainless steel and other corrosion-resistant alloys. The process involves immersing the steel in a chemical bath and controlling factors such as temperature, concentration, and time to achieve the desired surface finish. 4. Electropolishing: Electropolishing is an electrochemical process that combines the benefits of electrochemical and chemical polishing. It involves the application of an electric current to remove surface material while simultaneously dissolving it in an electrolyte solution. Electropolishing can provide a highly smooth, clean, and corrosion-resistant surface finish. It is commonly used for stainless steel and other alloys in industries such as pharmaceutical, food processing, and semiconductor manufacturing. 5. Vibratory Polishing: This method utilizes vibrating media, such as ceramic chips or abrasive pellets, along with a polishing compound to remove surface imperfections. The steel parts are placed in a vibratory tumbler or bowl where the continuous movement causes the media to rub against the parts, resulting in a polished surface. Vibratory polishing is commonly used for small or delicate parts and can be an efficient and cost-effective method. Overall, the choice of surface polishing method for special steel depends on factors such as the desired surface finish, part geometry, material properties, and industry requirements. It is important to consider these factors and consult with experts or specialists to determine the most suitable method for a specific application.

Q:How is the toughness of special steel measured?: The toughness of special steel is typically measured using impact testing methods, such as the Charpy or Izod test. These tests involve measuring the amount of energy absorbed by the steel when it is struck by a pendulum or a falling weight. The higher the energy absorbed, the tougher the steel is considered to be.

Q:How does special steel contribute to the fatigue resistance of products?: Special steel contributes to the fatigue resistance of products by providing enhanced strength, durability, and resistance to wear and tear. The unique composition and manufacturing processes of special steel result in improved mechanical properties, such as higher tensile strength and hardness, which help products withstand repeated loading and stress cycles without failure. Additionally, special steel can be engineered to have specific microstructures that enhance its resistance to fatigue, preventing the growth of cracks and ensuring longer product lifespan.

Q:Can special steel be used in the semiconductor industry?: Yes, special steel can be used in the semiconductor industry. Special steel, such as stainless steel, is often used in the semiconductor industry due to its excellent corrosion resistance, high temperature resistance, and low contamination properties. It is commonly used in various components and equipment used for semiconductor fabrication and processing.

Q:What are the different methods of surface anodizing for special steel?: There are several methods of surface anodizing for special steel, each with its own advantages and applications. Here are some of the different methods: 1. Chromic Acid Anodizing: This method involves immersing the steel in a solution of chromic acid. It forms a thin, hard, and corrosion-resistant oxide layer on the surface of the steel. Chromic acid anodizing provides excellent adhesion for paint and other coatings, making it suitable for applications requiring enhanced durability and aesthetic appeal. 2. Sulfuric Acid Anodizing: Sulfuric acid anodizing is one of the most widely used methods. It involves immersing the steel in a sulfuric acid bath and applying a direct current to create an oxide layer on the surface. This method offers excellent corrosion resistance, increased hardness, and improved wear resistance. It also provides a good base for applying dyes or sealing to achieve various colors and finishes. 3. Phosphoric Acid Anodizing: Phosphoric acid anodizing is commonly used for stainless steel. It involves immersing the steel in a solution of phosphoric acid and applying a direct current. This process creates a protective oxide layer that improves corrosion resistance and provides a uniform matte finish. Phosphoric acid anodizing is often used for applications where a decorative appearance is not required. 4. Titanium Anodizing: This method involves anodizing steel with titanium electrodes. It creates a thick oxide layer on the surface, resulting in improved corrosion resistance, increased hardness, and enhanced wear resistance. Titanium anodizing is commonly used in industries such as aerospace, where strong and durable surface properties are essential. 5. Hard Anodizing: Hard anodizing is a specialized process that produces a thick and highly durable oxide layer on the steel surface. It involves using a higher voltage and lower temperature in the anodizing process, resulting in improved hardness, wear resistance, and electrical insulation properties. Hard anodizing is often used in applications requiring superior abrasion resistance, such as parts subjected to heavy wear or friction. These are just a few of the different methods of surface anodizing for special steel. The selection of the most suitable method depends on the specific requirements of the application, desired properties, and the type of steel being treated. It is important to consult with experts in the field to determine the optimal anodizing method for a particular steel application.

Q:What are the main applications of special steel in the pharmaceutical industry?: Special steel is widely used in the pharmaceutical industry for various applications. One of the main applications is in the manufacturing of high-quality equipment such as tanks, vessels, and pipes that are required for the storage and transportation of pharmaceutical products. Special steel is preferred due to its corrosion resistance, durability, and ability to maintain product purity. Additionally, special steel is utilized in the production of precision tools and instruments used in pharmaceutical research, development, and quality control processes. Moreover, special steel is essential in the construction of cleanrooms and controlled environments, ensuring the hygienic and sterile conditions required in pharmaceutical manufacturing.

Q:What properties make special steel unique?: Special steel, also known as alloy steel, possesses unique properties that set it apart from other types of steel. Firstly, special steel is distinguished by its exceptional strength and hardness. It is engineered to have a high resistance to deformation, making it suitable for applications that require robust materials. Whether in construction, automotive, or aerospace industries, special steel provides the necessary durability and reliability. Another remarkable property of special steel is its superior corrosion resistance. By incorporating certain alloying elements such as chromium, nickel, or molybdenum, this type of steel becomes highly resistant to rust and other forms of corrosion. As a result, special steel is often used in marine environments, chemical plants, and oil and gas industries where exposure to harsh conditions is prevalent. Furthermore, special steel demonstrates excellent heat resistance. It can withstand high temperatures without losing its strength or structure, making it suitable for applications in extreme heat environments, such as power generation or furnace components. This property allows special steel to be utilized in critical situations where other materials may fail or degrade. Special steel is also known for its versatility and adaptability. With various alloying elements and heat treatment processes, it can be tailored to meet specific requirements of different industries. This flexibility makes it possible to create specialized alloys with unique properties, such as improved machinability, wear resistance, or enhanced magnetic properties, catering to a wide range of applications. In conclusion, the properties that make special steel unique are its exceptional strength and hardness, superior corrosion resistance, excellent heat resistance, and its versatility in being tailored to specific requirements. These properties make special steel an invaluable material in numerous industries, enabling the development of innovative and reliable products.

Q:How is boron steel used in automotive safety applications?: Boron steel is used in automotive safety applications due to its exceptional strength and ability to absorb impact energy. It is commonly utilized in the construction of car bodies and safety components such as side impact beams, roll cage reinforcements, and door intrusion beams. By incorporating boron steel, vehicles can better withstand and distribute crash forces, providing enhanced protection to occupants during collisions.

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