Grade ASTM/AISI/SAE 5140 CNBM Alloy Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Specifications:
1. Commodity: Round steel bar
2. Technical: Hot rolling
3. Length: Min. 5.8meter, according to requirement.
4.Diameter: 16mm-250mm
Chemical Composition:
Grade | C | Si | Mn | Cr | Ni | Cu | P | S |
40Cr | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | 0.80-1.10 | ≤0.30 | ≤0030 | ≤0.035 | ≤0.035 |
41Cr4 | 0.38-0.45 | ≤0.40 | 0.60-0.90 | 0.90-1.20 | ≤0.030 | ≤0.030 | ≤0.035 | ≤0.035 |
5140 | 0.38-0.43 | 0.17-0.37 | 0.70-0.90 | 0.70-0.90 | ≤0.030 | ≤0.030 | ≤0.040 | ≤0.035 |
Mechanical Property:
Grade | Tensile Strengthσb (MPa) | Yield Strength | Elongation | Reduction of Area ψ (%) | Impact Akv(J) | Hardness |
σs (MPa) | δ5 (%) | |||||
5140 | ≥980(100) | ≥785(80) | ≥9 | ≥45 | ≥47 | ≤207HB |
Usage and Applications:
Gear, Sleevesspool,Shaft, Crankshaft, Pin
Packaging & Delivery:
Packaging Detail: Standard seaworthy packing or as customer required; all goods are packed in bundle with steel strips and shipped by break bulk vessel or container
Delivery Detail: 15~45 days
Production Flow:
EAF+LF+VD+ Forged+ Heat Treatment
Material prepare (billet) — heat up — rough rolling — precision rolling — cooling — packing — storage and transportation
Quality Assurance:
1. We will strictly inspect our production that we sold according to the customer’s request.
2. Our steel reaches international quality standards.
3. Quality should be in conformity with the specification of the manufacturer. Quantity and packing conditions should be in conformity with the term in the contract.
4. Should the packing found damaged, the buyer has the right to claim to the seller
- Q: How is special steel used in the production of bearings?
- Special steel is used in the production of bearings due to its unique properties such as high durability, corrosion resistance, and wear resistance. It helps in increasing the lifespan and performance of bearings, allowing them to withstand high loads and rotational speeds. Additionally, the special steel used in bearings undergoes precise heat treatment and surface finishing processes to ensure optimal performance and reduce friction, resulting in smoother operations in various industries such as automotive, aerospace, and manufacturing.
- Q: What are the different types of tool steels used in special steel?
- There are various types of tool steels that are commonly used in special steel applications. These types of steels are specifically designed to exhibit exceptional hardness, wear resistance, toughness, and heat resistance, making them ideal for tooling and cutting applications. Some of the different types of tool steels used in special steel include: 1. Carbon Tool Steel: This type of tool steel contains high carbon content, typically ranging from 0.60% to 1.5%. It offers excellent hardness and wear resistance, making it suitable for applications such as drills, taps, and cutting tools. 2. High-Speed Steel (HSS): HSS is an alloy steel that contains a combination of various elements like tungsten, molybdenum, chromium, and vanadium. It provides exceptional heat resistance, hardness, and toughness, allowing it to retain its cutting edge even at high temperatures. HSS is commonly used in drill bits, milling cutters, and other cutting tools. 3. Cold Work Tool Steel: This type of tool steel is designed to be used at room temperature or lower temperatures. It offers excellent toughness, wear resistance, and strength. Cold work tool steels are used in applications such as blanking, piercing, and forming dies. 4. Hot Work Tool Steel: Hot work tool steels are specifically developed to withstand high temperatures without losing their hardness and strength. They have good thermal conductivity and can resist thermal fatigue and deformation. Hot work tool steels are used in applications like forging dies, extrusion dies, and die casting molds. 5. Shock-Resisting Tool Steel: This type of tool steel is designed to resist shock and impact loads. It provides excellent toughness, strength, and wear resistance. Shock-resisting tool steels are commonly used in applications such as hammers, chisels, and pneumatic tools. 6. Stainless Tool Steel: Stainless tool steels contain high levels of chromium, which provides them with excellent corrosion resistance. These steels are commonly used in applications where resistance to rust and corrosion is essential, such as surgical instruments, molds, and cutlery. 7. Powder Metallurgy Tool Steel: Powder metallurgy tool steels are manufactured using a powder metallurgy process, which allows for precise control of the steel's composition and microstructure. These steels exhibit excellent wear resistance, high toughness, and good machinability. They are used in applications such as high-speed cutting tools and forming tools. Overall, the different types of tool steels used in special steel applications offer a wide range of characteristics and properties to meet the specific requirements of various cutting, forming, and tooling applications.
- Q: What are the unique properties of stainless steel?
- Stainless steel has several unique properties that make it highly desirable in various applications. Firstly, it has excellent corrosion resistance, making it resistant to rust and staining, even in harsh environments. Additionally, stainless steel is durable and can withstand high temperatures, making it suitable for use in extreme conditions. It also has a high strength-to-weight ratio, making it strong yet lightweight. Moreover, stainless steel is hygienic and easy to clean, making it ideal for use in food processing and medical equipment. Lastly, stainless steel has an attractive appearance and can be easily fabricated into different shapes, making it a versatile material for various industries.
- Q: What are the different forging techniques for special steel parts?
- To produce special steel parts, there are various forging techniques available, which depend on the desired shape, size, and properties of the final product. Some commonly used techniques for forging special steel parts include: 1. Utilizing open-die forging involves shaping the metal between flat dies or anvils. It is suitable for simpler shapes and provides flexibility in producing a wide range of sizes. 2. Closed-die forging, also known as impression-die forging, involves shaping the metal within a closed die that contains the desired shape and allows for higher precision. It is commonly used for producing complex and intricate shapes. 3. Upset forging involves compressing and shaping the metal by applying pressure to the ends of the workpiece. This technique is often used to create parts with increased diameter or reduced length, such as bolts and nails. 4. Ring rolling is a technique that shapes a cylindrical workpiece by applying pressure from rotating rolls. It is commonly used for producing seamless rings with enhanced strength and durability, for example, gears, bearings, and flanges. 5. Isothermal forging is performed by forging the metal at a constant temperature, usually within a specially designed furnace. This technique allows for precise control over the metallurgical properties of the final product, resulting in improved mechanical properties and reduced residual stress. 6. Precision forging, also known as near-net-shape forging, uses specially designed dies to produce parts with minimal finishing operations. It is commonly used for complex shapes and high-volume production, ensuring cost-effectiveness and dimensional accuracy. 7. Press forging involves shaping the metal by applying pressure through a mechanical or hydraulic press. It allows for precise control over the forging process and is often used for producing high-strength, large-sized components. Each of these forging techniques offers unique advantages and is suitable for different applications. The appropriate selection of the forging technique for special steel parts depends on factors such as the desired shape, size, strength, and cost-effectiveness of the final product.
- Q: What are the requirements for special steel used in oil and gas equipment manufacturing?
- Due to the demanding operating conditions and harsh environments that oil and gas equipment encounters, the requirements for special steel used in their manufacturing are extremely strict. These materials must meet several key requirements: 1. Excellent resistance to corrosion is essential for the special steel used in oil and gas equipment. This is particularly important in the presence of corrosive fluids like oil, gas, and saltwater. By preventing degradation and premature failure, corrosion resistance ensures the equipment's longevity. 2. The steel must possess high strength and toughness to withstand the extreme pressures, temperatures, and mechanical stresses encountered during oil and gas operations. This ensures that the equipment can perform reliably in demanding conditions. 3. Special steel used in oil and gas equipment must maintain its mechanical properties and structural integrity even at high temperatures, as these processes often involve elevated temperatures. 4. Weldability is an important aspect of special steel used in oil and gas equipment manufacturing. It should allow for efficient and reliable welding processes without compromising the equipment's overall strength and integrity. 5. Good fatigue resistance properties are necessary for special steel used in oil and gas equipment, as cyclic loading can lead to fatigue failure if the material is not designed to withstand repetitive stresses. 6. In applications like offshore drilling or arctic environments, where extremely low temperatures are encountered, the special steel should exhibit excellent toughness and ductility to prevent brittle fracture. 7. The chemical composition of the special steel must be tightly controlled to ensure consistent and predictable material properties. This involves strict control over the levels of various alloying elements, impurities, and trace elements to meet the specific requirements of the oil and gas industry. Meeting these requirements is crucial for the safe and reliable operation of oil and gas equipment. Special steel manufacturers collaborate closely with industry standards and specifications to develop and provide materials that meet these demanding requirements, ensuring the integrity and performance of the equipment in the oil and gas sector.
- Q: How does precipitation hardening enhance the strength of special steel?
- Precipitation hardening is a heat treatment process that enhances the strength of special steel by creating small, uniformly dispersed particles within the metal matrix. These particles act as obstacles to dislocation movement, making it more difficult for them to slide past each other and deform the material. This results in increased strength, hardness, and resistance to wear and fatigue, making the steel suitable for various demanding applications.
- Q: What are the physical properties of special steel?
- Special steel refers to a broad category of steel alloys that possess unique physical properties compared to regular steel. These properties can vary depending on the specific type of special steel. However, some common physical properties include high strength, hardness, toughness, and resistance to corrosion and wear. Special steels are often tailored for specific applications, such as automotive components, aerospace structures, or toolmaking, to meet the demanding requirements of these industries.
- Q: How is special steel used in the marine manufacturing process?
- Special steel is used in the marine manufacturing process for various applications such as constructing the ship's hull, propellers, and other critical components. Its high strength, corrosion resistance, and durability make it ideal for withstanding the harsh marine environment and ensuring the safety and reliability of the vessel.
- Q: What are the properties of special steel?
- Special steel has a high level of strength, durability, and resistance to corrosion. It also exhibits excellent heat resistance, hardness, and toughness, making it suitable for various applications in industries like aerospace, automotive, and construction. Additionally, special steel often possesses specific properties such as magnetic, electrical, or wear resistance, depending on its composition and treatment.
- Q: What are the different mechanical defects in special steel?
- There are several mechanical defects that can occur in special steel, which can compromise its overall strength and performance. Some of the most common defects include: 1. Inclusions: Inclusions are foreign particles or impurities that are present in the steel. These can include oxides, sulfides, or other non-metallic materials. Inclusions can weaken the steel and reduce its ductility, making it more prone to cracking or failure. 2. Segregation: Segregation refers to the uneven distribution of alloying elements within the steel. This can lead to variations in hardness, strength, and other mechanical properties across the material. Segregation can create localized areas of weakness, increasing the likelihood of failure under stress. 3. Cracks: Cracks can occur in special steel due to a variety of factors, such as improper cooling, excessive heat, or high levels of stress. Cracks can significantly reduce the structural integrity of the steel and may propagate over time, leading to catastrophic failure. 4. Laminations: Laminations are thin layers or sheets of material that are formed during the manufacturing process. They can occur due to improper rolling or forging, or the presence of inclusions. Laminations can weaken the steel and lead to premature failure under load. 5. Decarburization: Decarburization is the loss of carbon from the surface of the steel, typically due to exposure to high temperatures or oxidation. This can result in a layer of softer, lower carbon steel on the surface, reducing the overall hardness and strength of the material. 6. Grain growth: Grain growth occurs when the individual crystals within the steel (grains) grow larger over time. This can happen due to high temperatures, prolonged exposure to stress, or improper heat treatment. Grain growth can reduce the strength and toughness of the steel, making it more prone to deformation or fracture. It is important to note that these mechanical defects can vary in severity and are often influenced by factors such as the manufacturing process, quality control measures, and the specific composition of the special steel. Regular inspection, testing, and adherence to proper handling and processing techniques are essential to minimize these defects and ensure the desired mechanical properties in special steel.
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Grade ASTM/AISI/SAE 5140 CNBM Alloy Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 10000 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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