20Cr Steel Round Bar SAE520 Steel Round Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 50000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
20Cr Steel Round Bar SAE520 Steel Round Bar
Product Description:
1.Standard:40Cr,20Cr, 40CrMo4,SCM440,AISI4140, etc.
2.Diameter:25mm-450mm
3.Length:5.8/6m-12m or as required
4.Application:re-manufacture, structural steel etc.
5.Certificates:ISO9001:2008,ISO14001:2004,OHSAS18001
6.Packing: In bundles,Standard export sea-worthy packing or as customer's requirement
7.Shipment: by bulk or by container
8.Quality Contation
Both end of each bar must be cut.
Ladle furnanced and vacuum de-gassed
Show heat No. on each bar
Surface condition the surface of the hot rolled square bar shall befree cracks, scar and wrinkles that affect the use of the
billets. In case there is the above-mentioned defect, it shall be remove.
The mill test certificate shall show the chemical composition, and it is guaranteed that the chemical composition shall be
within the limit stipulated in the contract.
Chemical composition:
Grade | C | Si | Mn | Cr |
20Cr | 0.18-0.24 | 0.17-0.37 | 0.5-0.8 | 0.7-0.9 |
Specification:
OD | Length | Material | Standard | Technique |
16-260mm | 6-12m or aques per request | 20# | GB ASTM DIN | Hot rolled |
16-350mm | 45# | |||
200-500mm | 45# | Forged | ||
20-250mm | 20Cr,40Cr,20-42CrMo | Hot rolled | ||
50-300mm | GCr15 |
Application:
Hot rolled alloy structure steel round bar are widely used in machinery making, autombile making, railway, mine machinery, petoleum machinry, agricultural machinery and civil archtectue such as all kinds of shafts, screws, connecting rods, hardware tools, gears, standard parts, spanners fasteners, structural parts for automobile and agricultural machinery, outer and iner sleeves, rollers and balls for bearing making.
Product Show:
- Q: What are the different types of case-hardening steel?
- There are several different types of case-hardening steel, including carburizing steel, nitriding steel, and cyaniding steel.
- Q: What are the properties of leaded steel?
- Leaded steel is a type of steel that contains a small amount of lead as an alloying element. The addition of lead enhances the machinability and chip formation properties of the steel. Leaded steel has improved cutting and drilling capabilities, making it easier to work with during machining operations. However, it also reduces the strength and hardness of the steel, which may limit its use in certain applications where high strength is required. Additionally, the presence of lead can pose health and environmental risks, so proper safety measures should be taken when handling and disposing of leaded steel.
- Q: What are the different methods of surface honing for special steel?
- There are several methods of surface honing for special steel, including abrasive honing, superabrasive honing, and diamond honing. Abrasive honing involves using a honing stone with abrasive particles to remove material from the surface of the steel. Superabrasive honing uses a honing tool with diamond or cubic boron nitride particles for more precise and efficient honing. Diamond honing, as the name suggests, utilizes diamond abrasives to achieve a superior surface finish and dimensional accuracy. Each method has its own advantages and suitability for specific applications in surface honing special steel.
- Q: What are the applications of special steel in the oil and gas manufacturing process?
- Special steel is used extensively in the oil and gas manufacturing process for various applications. It is commonly used in the construction of pipelines, vessels, and storage tanks due to its high strength and resistance to corrosion. Special steel is also utilized in drilling equipment, such as drill bits and casings, to withstand the harsh conditions encountered during drilling operations. Additionally, it is employed in the manufacturing of valves, fittings, and other critical components that need to endure high pressure and extreme temperatures. Overall, special steel plays a crucial role in ensuring the integrity and longevity of oil and gas infrastructure.
- Q: What are the different stamping grades of special steel?
- There are several different stamping grades of special steel used in various industries. Some of the common stamping grades include: 1. Low Carbon Steel: This grade of special steel is known for its excellent formability and weldability. It is often used in applications that require deep drawing or complex bending. Low carbon steel is also cost-effective and widely available, making it a popular choice in stamping processes. 2. High Strength Low Alloy (HSLA) Steel: HSLA steel is a type of special steel that contains small amounts of alloying elements such as copper, nickel, or chromium. This grade offers higher strength and better toughness compared to low carbon steel. It is commonly used in automotive components, structural parts, and other applications that require strength and durability. 3. Stainless Steel: Stainless steel is a corrosion-resistant special steel that contains a minimum of 10.5% chromium. It is commonly used in stamping applications that demand resistance to rust, staining, and corrosion. Stainless steel comes in various grades, such as 304, 316, and 430, each offering different levels of corrosion resistance and mechanical properties. 4. Tool Steel: Tool steel is a high-quality special steel designed for applications that require resistance to wear, deformation, and high temperatures. It is commonly used in stamping dies, cutting tools, and other applications where hardness and toughness are crucial. Tool steel grades include D2, A2, O1, and M2, among others. 5. Electrical Steel: Electrical steel, also known as silicon steel, is a special grade that has high magnetic permeability and low electrical conductivity. It is used in stamping applications that require efficient magnetic properties, such as transformers, motors, and generators. These are just a few examples of stamping grades of special steel. Each grade is chosen based on the specific requirements of the application, such as strength, corrosion resistance, magnetic properties, or formability.
- Q: How does special steel contribute to the aerospace safety?
- Special steel contributes to aerospace safety in several ways. Firstly, special steel is used in the construction of aircraft components such as landing gear, engine parts, and structural supports. These components need to withstand extreme stress, high temperatures, and corrosive environments, and special steel provides the necessary strength, durability, and resistance to ensure the safety and reliability of the aircraft. Secondly, special steel is utilized in the manufacturing of aerospace tools and equipment. These tools are essential for maintenance, repairs, and inspections of aircraft systems. The high strength and toughness of special steel ensure that these tools can withstand heavy use, enabling efficient and accurate maintenance procedures, ultimately contributing to the overall safety of aerospace operations. Furthermore, special steel is also used in the production of safety-critical fasteners and connectors in aerospace applications. These fasteners play a crucial role in holding aircraft components together, and their reliability is paramount for the safe operation of the aircraft. Special steel's excellent mechanical properties, including high tensile strength and resistance to fatigue, ensure the integrity and security of these fasteners, reducing the risk of component failure and enhancing aerospace safety. Overall, the use of special steel in aerospace applications significantly contributes to safety by providing the necessary strength, durability, and reliability required in critical aircraft components, tools, and fasteners.
- Q: How does special steel contribute to the food processing industry?
- Special steel contributes to the food processing industry by providing high-quality and durable materials for the production of equipment and machinery. The unique properties of special steel, such as corrosion resistance, heat resistance, and hygiene, ensure that the food processing industry can maintain strict standards of cleanliness and efficiency. This type of steel is used in various applications, including cutting, grinding, and packaging, ultimately enhancing the safety, productivity, and longevity of food processing operations.
- 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 production of hydraulic components?
- Yes, special steel can be used in the production of hydraulic components. Special steels, such as stainless steel or high-strength alloy steels, offer excellent corrosion resistance, high strength, and durability, making them suitable for hydraulic applications where resistance to pressure, fluid flow, and environmental factors is crucial.
- Q: How does special steel contribute to the electrical resistance of products?
- There are several ways in which special steel can contribute to the electrical resistance of products. To begin with, special steel can be customized in terms of its composition to possess specific electrical properties, such as resistivity. By carefully choosing the appropriate alloys and adjusting the carbon content, special steel can be made to have a higher resistivity compared to regular steel or other materials. This increased resistivity is advantageous in situations where electrical conductivity needs to be restricted. For instance, in electrical wiring, the utilization of special steel with higher resistivity can help prevent excessive current flow, thereby reducing the risk of overheating and potential electrical hazards. Similarly, in electrical resistors, special steel can be employed to achieve the desired level of resistance, allowing for controlled current flow and energy dissipation. Moreover, special steel can also contribute to electrical resistance through its physical properties. The microstructure of special steel can be engineered to enhance its resistance to the flow of electrical current. For example, the introduction of certain alloying elements or the implementation of specific heat treatment processes can generate a fine-grained structure or create barriers to the movement of electrons, ultimately increasing the overall resistance. Additionally, special steel finds application in the production of electrical contact materials. These materials must possess specific electrical and mechanical properties to ensure reliable and efficient electrical connections. Special steel alloys can offer high electrical conductivity while also exhibiting resistance to corrosion, wear, and deformation, thereby contributing to the overall electrical resistance of the product. In conclusion, special steel contributes to the electrical resistance of products through its tailor-made composition, which provides higher resistivity compared to regular steel. Furthermore, the microstructure of special steel can be modified to enhance its resistance to electrical current flow. Whether it is employed to limit current flow, control resistance, or create dependable electrical contacts, special steel plays a crucial role in a variety of electrical applications.
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20Cr Steel Round Bar SAE520 Steel Round Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 50000 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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