Bearing Steel Bar

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 25MT m.t.

Supply Capability:: 600000TONS/YEAR m.t./month

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Specifications of Bearing Steel Bar

1. Dimensional sizes: Thickness: 14~100mm.Length:3000~5800mm,Diameter :14-500mm

2.Chemical composition: C=0.96~1.05,Si=0.15~0.35,Mn=0.25~0.45,Cr=1.4~1.65,P≤0.025,S≤0.025,Ni≤0.22,Cu≤0.20,Mo≤0.08

3. Grade: SAE51200/ GCr15 / 100cr6

4. Heat Treatment:

Soft annealing: heat to 680-720°C, cool slowly.

Hardness after annealing: Max. 241 HB

Hardening: 820 - 850 °C

Normalizing temperature: 840-880°C

Tempering: 540-680°C

5. Surface requirements: Black, grinding, bright, polish

6. Payment terms: 20% deposit, balance against L/C at sight or T/T.

Usage & Applications of Bearing Steel Bar

Stable elements, low harmful elements, high-purity steel, evenly carbides, ewer surface defects;

using with wide range of plastic processing, heat treatment with stable quality, high and

evenly hardness, good wear resistance, high strength of contact fatigue; excellent cutting and process ability.

steel bearing

Packaging & Delivery of Bearing Steel Bar

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.

steel bearing

Note:

1. According to national standard (GB) for our products, if not, supply according to national standards (GB) or agreement.

2. We can not only provide electric furnace +LF+VD and electro-slag re-melting (ESR)steel forging materials, but also forging products of piece, bar, etc.

3. Our company is equipped with roll equipment and can provide our customers with roll billets or finished.

4. Please send us your detailed specifications when inquire. We will reply to you ASAP.

Q:What are the requirements for special steel used in power generation equipment manufacturing?: The requirements for special steel used in power generation equipment manufacturing are quite stringent. First and foremost, this type of steel must possess high strength and durability to withstand the extreme operating conditions and loads experienced in power generation equipment. This includes withstanding high temperatures, pressure, and mechanical stress. Additionally, special steel used in power generation equipment must exhibit excellent resistance to corrosion and oxidation. As power generation equipment often operates in harsh environments, such as high humidity or exposure to corrosive substances, the steel must have a high level of resistance to ensure its longevity and performance. Furthermore, the steel used in power generation equipment must have good weldability and formability. This is crucial for the manufacturing process, as complex shapes and structures are often required in power generation equipment, and the ability to weld and form the steel accurately is essential. Another important requirement for special steel in power generation equipment is its ability to maintain its mechanical properties at elevated temperatures. Power generation equipment, such as boilers or turbines, operates at high temperatures, and the steel used must retain its strength, creep resistance, and dimensional stability under these conditions. Lastly, special steel for power generation equipment must conform to industry standards and specifications. These standards ensure the quality, reliability, and safety of the steel used in power generation equipment manufacturing. Compliance with these standards is crucial to ensure the performance and longevity of the equipment. Overall, the requirements for special steel used in power generation equipment manufacturing are demanding, encompassing high strength, durability, resistance to corrosion and oxidation, good weldability and formability, heat resistance, and compliance with industry standards. Meeting these requirements is vital to ensure the efficient and reliable operation of power generation equipment.

Q:What are the specific requirements for special steel used in the marine propeller industry?: To ensure optimal performance and durability in harsh marine environments, the marine propeller industry requires special steel that meets specific requirements. These requirements include the following: 1. Corrosion Resistance: Special steel must resist corrosion caused by constant exposure to saltwater. This prevents rust formation and maintains the propeller's integrity over time. 2. Strength and Toughness: The steel must possess high strength and toughness to withstand mechanical stresses and impacts, especially in rough sea conditions, without deforming or failing. 3. Fatigue Resistance: The steel should have excellent fatigue resistance to endure millions of load cycles without developing cracks or fractures. 4. Weldability: The steel must be easily weldable to ensure strong and reliable joints when manufacturing segmented propellers. 5. Heat Resistance: The steel needs to withstand significant heat generated by friction and propulsion forces to prevent deformation or loss of mechanical properties at high temperatures. 6. Machinability: Special steel should be easily machinable to allow for precise shaping and finishing of complex propeller blade designs. 7. Non-Magnetic Properties: To minimize interference with magnetic navigation systems and sensors used in modern ships, the steel should have low magnetic permeability. By meeting these specific requirements, the special steel used in the marine propeller industry can withstand seawater's challenging conditions, provide efficient propulsion, and maintain its structural integrity throughout the propeller's lifespan.

Q:What is special steel? What is special steel?: However, special steel refers to stainless steel, other special steel plate, such as automobile steel plate and military steel plate, etc., stainless steel is divided into austenite and ferrite, such as 304316410439 stainless steel varieties. According to the specific use of stainless steel quality, such as 409L can be used as a container, microwave oven and elevator industry, 304 can be used as medical devices. The market prospect is not an ordinary person can predict, domestic steel prices are monthly pricing, big companies such as Baosteel, TISCO, Zhangjiagang Pohang. Lead the trend of special steel prices.

Q:How does special steel contribute to the defense machinery industry?: The defense machinery industry heavily relies on special steel due to its numerous advantages and contributions to the performance and durability of various defense equipment. To begin with, special steel possesses remarkable strength and toughness, making it ideal for manufacturing crucial components like armor plates, ballistic missiles, submarines, and tanks. These components need to withstand impact, penetration, and extreme conditions, all of which special steel can handle. This ensures the safety and protection of military personnel and assets. Additionally, special steel offers excellent corrosion resistance, a crucial characteristic for defense machinery used in harsh environments such as maritime operations or combat zones. Corrosion can weaken structures and compromise equipment functionality, but special steel's resistance helps maintain the integrity and longevity of defense machinery. This reduces maintenance costs and increases operational readiness. Furthermore, special steel enables the production of precision components with high dimensional stability, essential for advanced defense systems like aircraft, missiles, and radars. These components require exceptional accuracy and reliability to function optimally, and special steel's uniformity and consistency meet these demands. This ensures precise performance and enhances the overall capabilities of defense machinery. Moreover, special steel also contributes to weight reduction in defense machinery. As military equipment becomes more complex and technologically advanced, reducing weight while maintaining strength is crucial for enhancing mobility, fuel efficiency, and overall operational effectiveness. Special steel's high strength-to-weight ratio allows for the development of lighter defense machinery without compromising durability or protection. In conclusion, special steel's exceptional strength, corrosion resistance, dimensional stability, and weight reduction properties make it an indispensable material in the defense machinery industry. It enables the production of robust and reliable equipment, ensuring the safety and effectiveness of military operations and enhancing the overall capabilities of defense forces.

Q:How does special steel perform in high-vibration environments?: Special steel is specifically designed to perform well in high-vibration environments. Its unique composition and properties allow it to withstand and absorb vibrations, reducing the risk of structural damage, fatigue, and failure. Special steel's high strength, durability, and resistance to corrosion make it an ideal choice for applications where vibrations are a concern, ensuring reliable and long-lasting performance.

Q:What are the key differences between special steel and tool steel?: Special steel and tool steel are both types of steel that have specific characteristics and applications. The key difference between special steel and tool steel lies in their intended use and properties. Special steel is a broad category that includes various types of steel with specialized properties for specific applications. It is often used in industries such as aerospace, automotive, and construction. Special steel may have enhanced strength, corrosion resistance, heat resistance, or other specific properties, depending on its intended application. On the other hand, tool steel is a specific type of special steel that is specifically designed for making tools. It has exceptional hardness, wear resistance, and toughness, which makes it suitable for applications where cutting, shaping, or forming materials is required. Tool steel is commonly used in the manufacturing of tools such as drills, hammers, dies, and molds. In summary, while special steel is a broader category that encompasses various types of steel with specialized properties, tool steel is a specific type of special steel that is specifically formulated for making tools, offering exceptional hardness, wear resistance, and toughness.

Q:What are the requirements for special steel used in construction equipment manufacturing?: The requirements for special steel used in construction equipment manufacturing typically include high strength, durability, and resistance to wear and corrosion. Additionally, the steel should have good weldability and machinability to ensure ease of fabrication. It should also possess excellent impact resistance to withstand heavy loads and harsh working conditions.

Q:How is heat-resistant steel used in the production of furnaces and boilers?: Heat-resistant steel is used in the production of furnaces and boilers due to its ability to withstand high temperatures without deformation or failure. This type of steel is specifically designed to maintain its strength and structural integrity even when exposed to extreme heat conditions. By using heat-resistant steel, furnaces and boilers can efficiently generate and contain high levels of heat, ensuring a safe and reliable operation.

Q:What are the challenges in heat treatment of special steel alloys?: The heat treatment of special steel alloys poses several challenges due to their unique composition and properties. One of the main challenges is achieving the desired microstructure and mechanical properties while maintaining dimensional stability. Special steel alloys often have complex alloying elements and require specific heat treatment processes to achieve the desired properties. Another challenge is controlling the heating and cooling rates during the heat treatment process. Special steel alloys are often sensitive to rapid or uneven heating and cooling, which can result in distortion, cracking, or the formation of undesirable phases. Therefore, precise control of the heating and cooling rates is crucial to avoid these issues and ensure uniformity in the final product. Furthermore, the presence of alloying elements in special steel alloys can lead to increased hardenability, making it challenging to achieve the desired hardness throughout the entire component. Special attention needs to be given to the selection of appropriate heat treatment parameters, such as temperatures, soaking times, and quenching media, to achieve the desired hardness and avoid excessive hardness gradients. Additionally, special steel alloys are often prone to oxidation and decarburization during heat treatment due to their high alloy content and exposure to elevated temperatures. These reactions can lead to surface defects and a decrease in the carbon content, affecting the final properties of the alloy. Therefore, protective atmospheres or heat treatment environments must be carefully controlled to prevent such issues. Moreover, the size and geometry of components made from special steel alloys can pose challenges during heat treatment. Large or complex-shaped components require careful consideration of the heating and cooling methods to ensure uniformity of the microstructure and properties throughout the entire component. This may involve the use of specialized furnaces, fixtures, or heat treatment cycles to overcome these challenges. In conclusion, the challenges in heat treatment of special steel alloys include achieving the desired microstructure and mechanical properties, controlling heating and cooling rates, managing hardenability, preventing oxidation and decarburization, and addressing the size and geometry of components. Overcoming these challenges requires a deep understanding of the alloy's composition, properties, and the application of appropriate heat treatment techniques.

Q:How is stainless tool steel used in the manufacturing of surgical instruments?: Stainless tool steel is commonly used in the manufacturing of surgical instruments due to its desirable properties such as high corrosion resistance, durability, and ease of sterilization. It provides the necessary strength and precision required for surgical tools, ensuring their longevity and performance in various medical procedures. Additionally, stainless tool steel can withstand repeated exposure to sterilization methods like autoclaving, making it a reliable choice for surgical instrument manufacturing.

REDMETAL,a well-known enterprise specializing in the production and sales of spring steel and bearing steel. Since the establishment of our company, we have been aimed to provide the customers with qualify and cheap product and the satisfatory service.

1. Manufacturer Overview
Location	Jiangsu, China
Year Established	1990
Annual Output Value	Above US$ 20 Million
Main Markets	Mid East; Eastern Europe; North America
Company Certifications

2. Manufacturer Certificates
a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port	Shanghai
Export Percentage	20% - 30%
No.of Employees in Trade Department	21-50 People
Language Spoken:	English; Chinese
b)Factory Information
Factory Size:	Above 100,000 square meters
No. of Production Lines	1
Contract Manufacturing	OEM Service Offered;
Product Price Range	High; Average