52100 Bearing Steel Rounds Hot Rolled Treatment
- 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:
Bearing Steel
Shape:
Steel Round Bar
52100 Bearing Steel Rounds Hot Rolled Treatment
Product Description:
Material | suj2 | ||
Chemical Composition | Mechanical Properties(In Quenched & Tempered State) | ||
C | 0.95-1.05 | Tensile strength(MPA) | ---- |
Si | 0.15-0.35 | Yield strength (MPA) | -- |
Mn | 0.25-0.45 | Elongation(δ5/%) | -- |
Cr | 1.40-1.65 | Reduction in Area (ψ/%) | -- |
Mo | ≤0.10 | Impact (J) | -- |
P | ≤0.025 |
Hardness | HB170-207 HB207-229 HB270-390 HB229-285 HRC62-66 HRC61-66 HRC≈67 |
S | ≤0.025 | ||
Ni | ≤0.30 | ||
Cu | ≤0.25 | ||
Ni+Cu | ≤0.50 | ||
Characteristics:
1) Good hardability and high toughness
2) Long fatigue life
3) Medium cold processing plasticity
4) Certain machinability
5) Poor weldability
Application:
1) Steel ball, roller and collar of large machinery bearing
2) High-hardness and high contact fatigue strength machinery parts with heavy load, such as axis of rotation, blade, stator pump, profiling, sleeve, mandril, etc.
Photos of our products:
- Q: How does special steel perform in terms of creep resistance?
- Special steel typically performs very well in terms of creep resistance. Due to its unique composition and heat treatment, it can withstand high temperatures and prolonged stress without deforming or failing. This makes it an excellent choice for applications that require long-term stability under extreme conditions, such as in power plants or aerospace industry.
- Q: How does special steel perform in high-stress environments?
- Special steel is specifically designed to perform exceptionally well in high-stress environments. Its unique composition and manufacturing process make it highly resistant to various forms of stress, such as mechanical, thermal, and chemical stress. One of the key properties of special steel is its high tensile strength, which allows it to withstand immense pressure without deformation or failure. This strength is achieved through the addition of alloying elements, such as chromium, nickel, and molybdenum, which enhance its structural integrity and toughness. The presence of these elements also increases the steel's resistance to corrosion and oxidation, making it more durable and reliable in harsh environments. Moreover, special steel exhibits excellent fatigue resistance, enabling it to withstand repetitive and cyclic loading without developing cracks or fractures. This property is crucial in high-stress environments where components are subjected to constant vibrations or cyclic loading, such as in aerospace, automotive, and industrial applications. In addition to its mechanical properties, special steel is also highly resistant to extreme temperatures. It can maintain its strength and integrity even at elevated temperatures, making it suitable for applications in high-temperature environments such as power plants, furnaces, and chemical processing industries. Furthermore, special steel has excellent wear resistance, which enables it to withstand abrasive conditions, such as those encountered in mining, construction, or manufacturing processes. This reduces the need for frequent maintenance or replacement, resulting in cost savings and increased productivity. Overall, special steel's exceptional performance in high-stress environments can be attributed to its unique combination of strength, durability, corrosion resistance, fatigue resistance, temperature resistance, and wear resistance. Its ability to withstand extreme conditions makes it an ideal choice for critical applications where reliability and safety are paramount.
- Q: What are the different types of welding techniques used for special steel?
- There are several types of welding techniques used for special steel, including TIG (Tungsten Inert Gas) welding, MIG (Metal Inert Gas) welding, Stick welding, and Flux-cored arc welding. These techniques are commonly used for welding special steel due to their ability to provide strong and precise welds, ensuring the integrity and durability of the material.
- Q: How does special steel contribute to the aerospace fuel efficiency?
- Special steel contributes to aerospace fuel efficiency in several ways. Firstly, special steel alloys are used in the manufacturing of aircraft engines, which are designed to be lightweight and durable. The use of these alloys helps reduce the overall weight of the engine, resulting in less fuel consumption during flight. Additionally, special steel is also used in the construction of various aircraft components, such as wings and landing gear. By utilizing stronger and lighter steel materials, the overall weight of the aircraft is reduced, leading to improved fuel efficiency. Moreover, special steel's high temperature resistance properties enable it to withstand the extreme heat generated by engines, allowing for more efficient combustion and reduced energy loss. Overall, the use of special steel in aerospace applications significantly contributes to fuel efficiency by reducing weight, improving durability, and optimizing engine performance.
- Q: What are the different nitriding techniques used for special steel?
- There are several nitriding techniques used for special steel, including gas nitriding, salt bath nitriding, plasma nitriding, and ion nitriding. Each technique involves introducing nitrogen into the surface of the steel to improve its hardness, wear resistance, and corrosion resistance. Gas nitriding involves exposing the steel to ammonia gas at high temperatures, while salt bath nitriding immerses the steel in a bath of molten salts containing nitrogen. Plasma nitriding and ion nitriding both use electrical discharges to ionize nitrogen gas and accelerate it towards the steel surface. These techniques offer different levels of control over the nitriding process and can be tailored to meet specific requirements for different types of special steel applications.
- Q: What are the different forging techniques for special steel?
- There are several different forging techniques that can be used for special steel, depending on the desired properties and characteristics of the final product. Some of the most common forging techniques for special steel include: 1. Open-die forging: Also known as smith forging or hand forging, this technique involves shaping the steel between two flat dies or anvils. The metal is repeatedly heated and hammered until it takes the desired shape. Open-die forging is often used for larger and more complex components, such as shafts, cylinders, or discs. 2. Closed-die forging: Also called impression-die forging, this technique involves shaping the steel within a set of dies that contain the desired shape. The metal is placed between the dies and compressed under high pressure. Closed-die forging is often used for smaller, more intricate components, and it allows for greater control over the final shape and dimensions. 3. Roll forging: In this technique, the steel is passed between two or more rotating rolls to shape it. The rolls exert pressure on the metal, causing it to deform and take the desired shape. Roll forging is commonly used to produce long, cylindrical components such as axles, bars, or rings. 4. Upset forging: This technique involves deforming the steel by reducing its length and increasing its cross-sectional area. The metal is placed between two dies and compressed axially, causing it to bulge and take the desired shape. Upset forging is often used to produce short, thick components such as bolts, screws, or nuts. 5. Press forging: Similar to closed-die forging, press forging uses a hydraulic or mechanical press to shape the steel. The metal is placed between two dies and compressed under high pressure, resulting in a controlled deformation. Press forging allows for precise control over the shaping process and is often used for producing high-quality and complex components. Each of these forging techniques has its own advantages and limitations, and the choice of technique depends on factors such as the size, complexity, and desired properties of the final product. By selecting the appropriate forging technique, manufacturers can ensure that special steel components meet the required specifications and performance standards.
- Q: What are the specific requirements for special steel used in the railway sector?
- The specific requirements for special steel used in the railway sector are crucial for ensuring the safety, durability, and efficient operation of the railway infrastructure. Some of the key requirements include: 1. High strength: Special steel used in the railway sector must possess exceptional strength to withstand heavy loads, vibrations, and impacts. This is crucial for maintaining the structural integrity of tracks, bridges, and other components. 2. Wear resistance: Railway tracks and wheels experience significant wear due to continuous contact and friction. Special steel must have excellent wear resistance to minimize the need for frequent maintenance and replacement. 3. Fatigue resistance: The constant cyclic loading experienced by railway components demands high fatigue resistance in the steel. This allows them to withstand repetitive stress and prevents the occurrence of fatigue failures. 4. Corrosion resistance: Railway infrastructure is exposed to various environmental conditions, such as moisture, extreme temperatures, and chemicals. Special steel must possess good corrosion resistance to prevent rusting and degradation, ensuring a longer service life. 5. Heat resistance: In certain applications, such as rail joints and fasteners, special steel is subjected to high temperatures due to friction and stresses. The steel must have good heat resistance to maintain its mechanical properties under such conditions. 6. Weldability: Special steel used in the railway sector should have good weldability to enable efficient and reliable joining of components during manufacturing and maintenance processes. 7. Ductility and toughness: The steel must exhibit sufficient ductility and toughness to absorb energy and resist fracture in the event of a collision or impact, ensuring passenger safety. 8. Dimensional stability: Special steel used in the railway sector must maintain its dimensional stability under varying temperatures and loads to prevent deformation and ensure proper alignment of tracks and components. Meeting these specific requirements for special steel in the railway sector is essential for ensuring the safety, reliability, and longevity of railway infrastructure, contributing to the smooth operation of the entire transport network.
- Q: What are the properties of magnetic alloy steel?
- Magnetic alloy steel possesses a combination of magnetic and mechanical properties that make it suitable for various applications. It exhibits high magnetic permeability, allowing it to attract and retain magnetic fields efficiently. Additionally, it boasts excellent strength, hardness, and wear resistance, making it ideal for manufacturing components in electrical transformers, motors, generators, and magnetic cores. Its properties can be further enhanced through heat treatment processes, ensuring optimal performance in magnetic applications.
- Q: What is the difference between stainless steel and special steel?
- Stainless steel is a type of steel that contains a high amount of chromium, which makes it resistant to corrosion and staining. On the other hand, special steel refers to a wide range of alloys that are specifically designed to have unique properties, such as high strength, heat resistance, or electrical conductivity. While stainless steel is primarily used for its corrosion resistance, special steel is tailored to meet specific requirements in various industries, such as aerospace, automotive, or construction.
- Q: What are the applications of high-strength low-alloy (HSLA) steel?
- High-strength low-alloy (HSLA) steel finds applications in various industries such as automotive, construction, and manufacturing. It is commonly used in the production of lightweight and durable vehicle components, structural beams, pipelines, and machinery parts. HSLA steel's enhanced strength and toughness make it ideal for applications where weight reduction, increased load-bearing capacity, and resistance to corrosion and impact are crucial.
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52100 Bearing Steel Rounds Hot Rolled Treatment
- 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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