Hot-rolled Round Bearing Steel GCr15,100Cr6,SAE 52100

Hot-rolled Round Bearing Steel GCr15,100Cr6,SAE 52100 System 1

Hot-rolled Round Bearing Steel GCr15,100Cr6,SAE 52100

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 500 m.t.

Supply Capability:: 10000 m.t./month

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Specifications of Hot-rolled Round Bearing Steel GCr15,100Cr6,SAE 52100

1) Grade: Bearing steel SAE 52100 / GCr15 round bars

2) Diameter: 20-500mm

3) Hot rolled/forged, annealed

Application of Hot-rolled Round Bearing Steel GCr15,100Cr6,SAE 52100:

Commom steel used to produce balls and rings of bearing. The product has characteristics of uniform-chemical composition, low percentage of harmful elements, high purity, well-distributed carbide, good surface quality. It also has characteristics of wide scope of plastic,stable heat-treatment quality, uniformand high hardness, high wear resistance,high strength of touching fatigue. It has excellent machining property afer spheroidize annealing.

The use of products The product is used to produce balls and rings of bearing. Future Development By rational rolling and cooling process, the product can be spheroidized on-line and can be used in drawing and machining directly by customers. By combining re-spheroidize annealing and re-crystallisation of semi-finished product, the steel wire process can be simplified.

Packaging & Delivery of Hot-rolled Round Bearing Steel GCr15,100Cr6,SAE 52100

Mark: Heat No. will be cold stamped and Steel grade, diameter (mm), length (mm), and the manufacturer LOGO and weight (kg) is painted.

Standard seaworthy packing or as customer required

Delivery time: Within 30 days after order is confirmed.

Q: What are the different surface protection methods used for special steel?: The different surface protection methods used for special steel include galvanizing, painting, powder coating, and electroplating. These methods are employed to prevent corrosion, enhance durability, and improve appearance. Galvanizing involves applying a layer of zinc to the steel surface, creating a protective barrier. Painting involves applying a coat of paint, acting as a protective layer against environmental factors. Powder coating is a process where a dry powder is applied to the steel surface and then heated to form a durable and protective layer. Electroplating involves depositing a thin layer of metal onto the steel surface through an electrolytic process, providing corrosion resistance and aesthetic appeal.

Q: How does special steel perform in food processing applications?: The unique properties and benefits of special steel make it a widely used material in food processing applications. Its exceptional corrosion resistance is one of its key advantages in this industry. When exposed to corrosive substances like acids, alkalis, and salt solutions, special steel, such as stainless steel, forms a protective oxide layer on its surface, preventing corrosion and maintaining the hygiene and safety of the processed food. In addition to its corrosion resistance, special steel is highly durable and resistant to wear and tear. This is crucial in food processing equipment that undergoes rigorous and repetitive operations like cutting, grinding, and mixing. Special steel's high strength and toughness allow it to withstand these demanding applications without compromising its performance or integrity. As a result, the equipment has a longer lifespan, minimizing downtime and maintenance costs. Special steel also offers excellent heat resistance, which is essential for high-temperature food processing applications. It can withstand extreme temperatures without losing its mechanical properties, ensuring the structural integrity of the equipment and preventing any contamination risks. Furthermore, special steel is easy to clean and maintain, a critical factor in the food processing industry. Its smooth surface and non-porous nature prevent the accumulation of food particles, bacteria, and other contaminants, maintaining a high level of hygiene. Special steel is also resistant to chemical cleaning agents and can be easily sterilized, making it an ideal material for food processing equipment. To summarize, special steel's corrosion resistance, durability, heat resistance, and ease of maintenance make it an exceptional choice for food processing applications. Its properties contribute to the safety, efficiency, and longevity of the equipment, ensuring high-quality and hygienic food production.

Q: What are the applications of special steel in the nuclear industry?: Special steel is extensively used in the nuclear industry due to its exceptional properties. It is primarily employed in the construction of reactor vessels, containment structures, and fuel storage systems. Its high strength, corrosion resistance, and ability to withstand extreme temperatures make it an ideal material for these critical components. Additionally, special steel is also utilized in the production of nuclear fuel rods, shielding materials, and various other components that require excellent mechanical properties and resistance to radiation damage.

Q: What are the requirements for special steel used in military applications?: The requirements for special steel used in military applications typically include high strength, toughness, and durability to withstand extreme conditions and heavy impact. It should have excellent resistance to corrosion, wear, and fatigue to ensure long-term performance. The steel must also possess good weldability and machinability for ease of fabrication and maintenance. Additionally, it should meet stringent specifications and standards set by military organizations to ensure reliability, safety, and compatibility with other materials and systems.

Q: What are the different methods of preventing hydrogen-induced cracking in special steel?: To prevent hydrogen-induced cracking in special steel, various methods can be utilized: 1. Preheating the steel prior to welding or any high-temperature process can lower the possibility of hydrogen-induced cracking. This technique slows down the cooling rate, allowing hydrogen to dissipate before causing any cracks. 2. Employing specific heat treatment processes like stress relieving or post-weld heat treatment helps alleviate hydrogen-induced cracking. These processes decrease residual stresses and facilitate hydrogen diffusion, minimizing the risk of cracking. 3. Opting for steel alloys with higher resistance to hydrogen-induced cracking is an effective preventive measure. Certain steel compositions, such as low carbon or low alloy steels, demonstrate reduced susceptibility to cracking in the presence of hydrogen. 4. Ensuring proper control of hydrogen during welding is crucial. This can be achieved by utilizing low-hydrogen welding consumables, such as electrodes, and guaranteeing adequate shielding gas coverage to prevent atmospheric moisture from contaminating the weld. 5. Managing stress on the steel during welding or operation is essential in preventing cracking. This can be accomplished by employing appropriate welding techniques, such as avoiding excessive heat input or rapid cooling rates, and minimizing the introduction of tensile stresses during welding. 6. Applying protective coatings or surface treatments acts as a barrier against hydrogen absorption, reducing the risk of hydrogen-induced cracking. 7. Optimizing the welding parameters, including current, voltage, and travel speed, can help reduce the chances of hydrogen-induced cracking. Adjusting these parameters allows control over heat input and cooling rate, thus minimizing hydrogen absorption and subsequent cracking. It is important to note that a combination of these preventive measures is often necessary to effectively mitigate the risk of hydrogen-induced cracking in special steel. Additionally, implementing proper inspection and quality control procedures is crucial to ensure the integrity of the steel and detect any cracks or defects.

Q: How does heat-resistant steel perform in high-temperature applications?: Heat-resistant steel performs well in high-temperature applications as it retains its mechanical properties, such as strength and hardness, at elevated temperatures. It exhibits excellent resistance to thermal fatigue, oxidation, and creep, making it suitable for applications where exposure to extreme heat and stress is common. Additionally, heat-resistant steel maintains dimensional stability and can withstand thermal cycling without significant deformation or degradation, ensuring long-term reliability in high-temperature environments.

Q: What are the different construction grades of special steel?: In various industries and applications, special steel with different construction grades is utilized. These grades are specifically engineered to offer superior strength, durability, and resistance to corrosion and other environmental factors. Some well-known construction grades of special steel include: 1. Mild Steel: This grade is widely used in construction and is considered the most basic. It has a low carbon content, making it easy to work with and weld. Mild steel is suitable for applications that require moderate strength and durability. 2. High-Strength Low-Alloy (HSLA) Steel: HSLA steel is a type of special steel that contains small amounts of alloying elements like copper, nickel, and vanadium. This grade provides higher strength and improved formability compared to mild steel. It is commonly used in structural applications where a higher strength-to-weight ratio is needed. 3. Weathering Steel: Also referred to as Cor-Ten steel, weathering steel is a special grade that develops a protective layer of rust when exposed to the elements. This layer acts as a barrier against further corrosion, making it ideal for outdoor structures. Weathering steel is commonly used in bridges, buildings, and other architectural applications. 4. Stainless Steel: Stainless steel is a corrosion-resistant alloy that contains at least 10.5% chromium. It offers exceptional resistance to corrosion, heat, and chemicals, making it suitable for a wide range of construction applications. Stainless steel is commonly used in building facades, roofing, and structural components. 5. Tool Steel: Tool steel is a special grade specifically designed for manufacturing tools, dies, and molds. It possesses high hardness, wear resistance, and toughness properties, making it suitable for applications that involve cutting, shaping, and forming materials. 6. Alloy Steel: Alloy steel is a special grade that incorporates additional alloying elements like manganese, silicon, nickel, and chromium. This grade provides enhanced strength, toughness, and wear resistance compared to carbon steel. Alloy steel finds common usage in machinery, equipment, and components subjected to high stress and wear. These examples highlight the various construction grades of special steel. Each grade possesses unique properties and is chosen based on the specific requirements of the application.

Q: How is ultra-high-strength steel used in the construction industry?: Ultra-high-strength steel is commonly used in the construction industry to enhance the structural integrity and resilience of buildings and infrastructure. Its exceptional strength-to-weight ratio allows for the creation of lighter and more durable structures. This steel variant is often employed in applications such as high-rise buildings, bridges, and offshore structures, where its superior strength properties provide increased safety and load-bearing capacity.

Q: How does special steel perform in terms of thermal conductivity?: Special steel typically has lower thermal conductivity compared to other materials such as copper or aluminum. However, it can still conduct heat to a certain extent, making it suitable for applications where controlled heat transfer is required, such as in engine components or heat exchangers.

Q: How does special steel contribute to the nuclear industry?: Special steel plays a crucial role in the nuclear industry by offering unique properties such as high strength, heat resistance, and corrosion resistance. It is used in critical applications like reactor pressure vessels, steam generators, fuel cladding, and containment structures. The exceptional performance of special steel ensures the safety, reliability, and longevity of nuclear power plants, making it an indispensable material for the industry.

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