Grade AISI 5120 CNBM Alloy Steel Round Bar Made in China
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Product Description
1. Diameter: 8mm-250mm rou
2. Length: 2m, 3m, 5.8m, 6m or customized
3. Standard: GB, ASTM, AISI, SAE, DIN, JIS, EN
4. Produce Process: smelt iron - EAF smelt billet - ESR smelt billet -hot rolled or forged -steel round bar and plate
5. Heat Treatment: annealing, normalizing, tempering, quenching
6. Surface Treatment: Black, Polished, Galvanized
7. Quality Assurance: We accept third party inspection for all orders.
You can ask testing organizations such as SGS, BV, etc. to test our products before shipping.
Chemical Composition
Grade | Dia.(mm) | C | Si | Mn | Cr | P | S | Ni | Cu |
5120 | 16-85 | 0.18-0.24 | 0.17-0.37 | 0.50-0.80 | 0.70-1.00 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 |
5140 | 16-400 | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | 0.80-1.10 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.03 |
4135 | 13-230 | 0.32-0.40 | 0.17-0.37 | 0.40-0.70 | 0.80-1.10 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 |
4140 | 13-360 | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 |
Application:
Mechanism & Fasteners gear, Stressed components for vehicles
Engines and machines, Parts of larger cross-section
Company Information:
CNBM International Corporation is the most important trading platform of CNBM group.
Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.
Packing & Delivery
1. Packaging: seaworthy package or as required
2. Delivery: 35-45 days or based on quantity
Products Show
FAQ:
1.Your advantages?
Professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent
customer solution proposale
2. Test & Certificate?
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem
3. Factory or Trading Company?
CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department
of these factories. Also CNBM is the holding company of many factories.
4. Payment Terms?
30% TT as deposit and 70% before delivery.
Irrevocable L/C at sight.
5. Trading Terms?
EXW, FOB, CIF, FFR, CNF
6. After-sale Service?
CNBM provides the services and support you need for every step of our cooperation. We're the business
partner you can trust.
For any problem, please kindly contact us at any your convenient time.
We'll reply you in our first priority within 24 hours.
- Q: Can special steel be used in the chemical processing industry?
- Yes, special steel can be used in the chemical processing industry. Special steel alloys are specifically designed to withstand the harsh conditions of chemical processing, including exposure to corrosive chemicals, high temperatures, and pressure. These steels have excellent resistance to corrosion and can maintain their mechanical properties even in extreme environments. Therefore, they are commonly utilized in the construction of chemical reactors, pipelines, storage tanks, and various other equipment used in the chemical processing industry.
- Q: How does the carbon content affect the properties of special steel?
- The properties of special steel are determined by the carbon content, playing a crucial role. Adding carbon to the steel modifies its microstructure and influences various mechanical and physical properties. The main impact of carbon content is on the steel's hardness and strength. Raising the carbon content in special steel leads to an increase in hardness. This occurs because carbon atoms occupy the interstitial sites in the iron lattice, causing a distortion in the crystal structure. Consequently, the steel becomes more resistant to deformation. Additionally, a higher carbon content results in a greater martensitic transformation during heat treatment, further enhancing the material's hardness. Moreover, the strength of special steel is significantly affected by the carbon content. Increased carbon levels lead to greater strength due to the formation of stronger and more abundant carbide precipitates. These carbides act as obstacles to the movement of dislocations, making it more challenging for the steel to deform under load. However, it is important to acknowledge that higher carbon content comes with certain trade-offs. As the carbon content increases, the steel's ductility decreases. This means that the material becomes less capable of deforming without fracturing. High carbon content can make the steel brittle, reducing its toughness and impact resistance. In addition to hardness and strength, carbon content impacts other properties of special steel. It affects the material's wear resistance, as higher carbon content leads to the formation of harder carbides that can withstand wear and abrasion. Carbon also influences the steel's machinability, with higher carbon content making the material more difficult to machine due to increased hardness. In conclusion, the carbon content significantly influences the properties of special steel. It affects hardness, strength, ductility, toughness, wear resistance, and machinability. Therefore, when determining the appropriate carbon content for special steel, careful consideration of desired properties and application requirements is necessary.
- Q: How is leaded steel used in machining operations?
- Leaded steel is commonly used in machining operations due to its enhanced machinability. The addition of lead to the steel composition improves its cutting properties, allowing for smoother and more efficient machining. This type of steel is especially useful in applications that involve high-speed machining, such as turning, drilling, and milling. Additionally, leaded steel offers excellent chip control and reduces tool wear, making it a preferred choice in various machining operations.
- Q: How does electrical steel contribute to the production of transformers and motors?
- Electrical steel, also known as silicon steel, plays a crucial role in the production of transformers and motors. Its unique magnetic properties, such as high permeability and low core loss, allow for efficient energy transfer and reduced power losses. This material is specifically designed to enhance magnetic induction and minimize eddy currents, ensuring optimal performance in electrical machines. By using electrical steel in the core of transformers and motors, manufacturers can increase energy efficiency, improve power transmission, and reduce overall operational costs.
- Q: What is the role of heat treatment in special steel?
- Heat treatment plays a crucial role in enhancing the properties and performance of special steel. Special steel refers to alloys that are specifically designed to have unique characteristics, such as high strength, corrosion resistance, or heat resistance. Heat treatment involves subjecting the steel to controlled heating and cooling processes to alter its microstructure, resulting in desired properties. One of the key roles of heat treatment in special steel is to improve its mechanical properties. By carefully controlling the heating temperature and cooling rate, the steel's hardness, strength, and toughness can be enhanced. For example, through processes like quenching and tempering, special steel can be made significantly stronger and more resistant to wear and fatigue. This makes it suitable for applications where high strength and durability are required, such as in the construction of machinery, tools, or aerospace components. Heat treatment also helps to optimize the steel's resistance to corrosion. Special steel is often used in environments where it is exposed to harsh conditions, such as corrosive chemicals or high temperatures. By subjecting the steel to specific heat treatment processes, like annealing or precipitation hardening, the steel can develop a more stable microstructure that improves its resistance to corrosion and oxidation. This ensures that the special steel maintains its integrity and performance even in challenging environments. Furthermore, heat treatment can modify the steel's heat resistance properties. Special steel is frequently used in applications where it is exposed to high temperatures, such as in the manufacturing of turbines or exhaust systems. Through heat treatment techniques like normalization or hardening, the steel can be made more resistant to deformation, cracking, or softening at elevated temperatures. This enables the special steel to retain its strength and structural integrity even under extreme heat conditions. In summary, heat treatment plays a crucial role in optimizing the mechanical, corrosion resistance, and heat resistance properties of special steel. By carefully manipulating the steel's microstructure through controlled heating and cooling processes, heat treatment enhances the steel's strength, durability, and performance, making it suitable for a wide range of demanding applications.
- Q: What are the limitations of welding special steel?
- There are several limitations associated with welding special steel that need to be considered. Firstly, special steel, such as high-alloy steels or heat-resistant steels, often have a higher carbon content, which makes them prone to cracking during welding. This requires careful control of preheating, interpass temperature, and post-weld heat treatment to minimize the risk of cracking. Another limitation is the potential for distortion and warping during welding. Special steels have a higher thermal conductivity and lower thermal expansion coefficient compared to carbon steels, which means they dissipate heat more quickly and are more prone to distortion. Proper clamping and fixturing techniques are necessary to minimize these effects. Special steels can also be more sensitive to impurities, such as sulfur and phosphorus, which can lead to the formation of brittle compounds during welding. It is essential to use high-quality filler materials and ensure the cleanliness of the base metal to prevent the formation of these detrimental compounds. Furthermore, special steels often require specific welding techniques and parameters. For instance, some high-alloy steels require a slow cooling rate to prevent the formation of brittle microstructures. This may necessitate the use of specialized cooling methods such as post-weld heat treatment or controlled cooling rates during welding. Lastly, the cost of special steels can be significantly higher compared to carbon steels. This can limit their use in certain applications where budget constraints are a concern. Overall, while special steels offer enhanced properties for specific applications, their welding process requires careful consideration and adherence to specific procedures to overcome the limitations associated with cracking, distortion, impurities, and cost.
- Q: How does special steel contribute to reducing product defects?
- Special steel contributes to reducing product defects by offering enhanced properties such as increased strength, durability, and corrosion resistance. These properties ensure that the steel components used in various products, especially in critical applications, are less prone to wear, breakage, or malfunction. By using special steel, manufacturers can create more reliable and high-quality products, which ultimately leads to a reduction in defects and improves overall product performance.
- Q: How does special steel contribute to improving product sustainability?
- Special steel contributes to improving product sustainability through various ways. Firstly, special steel is known for its durability and strength, allowing products made from it to have a longer lifespan and reduced need for frequent replacements. This, in turn, reduces the overall waste generated from the manufacturing and disposal of products. Additionally, special steel is often used in the production of more energy-efficient products. For example, it is commonly used in the construction of wind turbines, which generate renewable energy. By using special steel in these applications, the efficiency and longevity of these products are enhanced, leading to a more sustainable energy generation system. Furthermore, special steel is often recyclable, meaning it can be melted down and reused in the production of new products. This helps to reduce the reliance on raw materials and minimizes the environmental impact associated with mining and extraction processes. Overall, the utilization of special steel in various industries contributes to improving product sustainability by promoting durability, energy efficiency, and recyclability.
- Q: Can special steel be used in the manufacturing of sports equipment?
- Yes, special steel can be used in the manufacturing of sports equipment. Special steel refers to a type of steel that has been specifically designed and engineered to possess certain characteristics and properties that make it suitable for various specialized applications. These characteristics can include high strength, durability, resistance to corrosion and wear, and the ability to withstand extreme conditions. In the manufacturing of sports equipment, special steel can be used in a variety of ways. For example, it can be utilized to create the shafts of golf clubs or tennis rackets, where its high strength and stiffness are crucial for optimal performance. Special steel can also be used in the construction of sports equipment such as bicycles, where its lightweight yet strong properties are highly desirable. Additionally, special steel can be employed in the manufacturing of sports equipment accessories, such as hooks, buckles, or fasteners. These components often require high tensile strength and corrosion resistance, and special steel can provide these properties, ensuring the longevity and reliability of the equipment. In summary, special steel can indeed be used in the manufacturing of sports equipment, thanks to its unique properties that enhance performance, durability, and overall quality.
- Q: What are the requirements for special steel used in high-strength applications?
- The requirements for special steel used in high-strength applications typically include high tensile strength, excellent toughness, good corrosion resistance, and the ability to withstand extreme temperatures. Additionally, the steel must possess good weldability and formability to facilitate the manufacturing process. Furthermore, it should meet specific industry standards and specifications to ensure its suitability for the intended application.
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Grade AISI 5120 CNBM Alloy Steel Round Bar Made in China
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 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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