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: What are the benefits of using special steel in the energy sector?
- The benefits of using special steel in the energy sector are numerous. Firstly, special steel offers exceptional strength, durability, and resistance to corrosion, making it ideal for withstanding the harsh conditions experienced in energy production and transmission. This allows for longer service life and reduced maintenance costs. Additionally, special steel possesses excellent heat resistance, enabling it to withstand high temperatures and pressure, making it suitable for use in power generation equipment such as turbines and boilers. Furthermore, special steel is highly versatile and can be customized to meet specific requirements, facilitating the design and construction of complex structures and components in the energy sector. Ultimately, the use of special steel enhances the reliability and efficiency of energy systems, contributing to overall sustainability and cost-effectiveness.
- Q: How does special steel contribute to the manufacturing of bearings?
- Special steel plays a crucial role in the manufacturing of bearings as it offers enhanced strength, durability, and corrosion resistance. The unique properties of special steel, such as high hardness and wear resistance, allow bearings to withstand heavy loads and operate at high speeds. Additionally, special steel alloys can be tailored to specific application requirements, ensuring optimal performance and longevity of bearings in various industries.
- Q: Can special steel be used in the railway industry?
- Yes, special steel can be used in the railway industry. Special steel, such as high-strength steel or corrosion-resistant steel, can be utilized for various applications in the railway industry, including the construction of tracks, bridges, and locomotives. These types of steel offer enhanced durability, strength, and resistance to wear and tear, making them suitable for the demanding conditions and heavy loads encountered in the railway sector.
- Q: How does special steel contribute to the energy sector?
- The energy sector heavily relies on special steel, which plays a vital role in improving efficiency, reliability, and safety. Firstly, special steel is essential for constructing pipelines and storage tanks in the oil and gas industry. These components must withstand high pressures, extreme temperatures, and corrosive surroundings, and special steel provides the necessary strength and resistance to ensure their integrity and prevent any leakage. Additionally, special steel is utilized in power generation plants to manufacture turbine blades and other crucial parts. These plants require materials that can endure the high temperatures and pressures generated by fossil fuel combustion or nuclear energy use. Special steel's heat-resistant properties make it the perfect choice for these applications, enhancing the overall efficiency and longevity of power plants. Furthermore, special steel is vital for producing wind turbines, which are rapidly becoming a significant source of renewable energy. The blades, tower structures, and gearboxes of wind turbines undergo significant stress and strain, and special steel provides the strength and durability needed to withstand these conditions. By incorporating special steel, wind turbines can operate reliably and efficiently, contributing to the growth of clean energy. Moreover, special steel is indispensable for infrastructure in the energy sector, such as transmission towers and substations. These structures must support heavy loads and endure extreme weather conditions while maintaining electrical conductivity. Special steel's high strength and corrosion resistance make it an ideal material for these applications, ensuring the reliable transmission and distribution of electricity. In summary, special steel is a crucial element in the energy sector, providing the necessary strength, durability, and resistance to extreme conditions. Its use in pipelines, power generation plants, wind turbines, and infrastructure improves the efficiency, reliability, and safety of the energy sector, facilitating the production and distribution of both conventional and renewable energy sources.
- 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?
- There are several methods to prevent hydrogen-induced cracking in special steel. One common approach is to use preheating techniques, which involve heating the steel before welding to reduce hydrogen levels and minimize the risk of cracking. Another method is to employ low-hydrogen welding consumables, such as low-hydrogen electrodes or filler wires, which have reduced hydrogen content and can help prevent cracking. Additionally, post-weld heat treatments, such as stress relieving or tempering, can be implemented to remove residual hydrogen and relieve stress in the steel, reducing the chances of cracking. Proper cleaning and preparation of the steel surface, as well as controlling the welding parameters, are also crucial in preventing hydrogen-induced cracking.
- Q: What are the common failures or issues with special steel?
- Special steel may encounter various failures or problems. Among these, corrosion is a prevalent issue. When exposed to specific environmental conditions, such as moisture or aggressive chemicals, special steel, like any other steel, can be susceptible to corrosion. As a result, its structural integrity and overall performance may decline. Fatigue is another common failure. Special steel is often used in applications that demand strength and durability. However, repetitive loading or stress can cause the material to develop cracks or fractures over time, leading to fatigue failure. This can be particularly troublesome in industries like aerospace or automotive, where components are subjected to constant cyclic loading. Improper heat treatment can also lead to failure. To achieve desired properties like hardness or toughness, special steel often requires specific heat treatments. If the heat treatment process is not executed correctly, it can result in inconsistent material properties, which in turn can reduce performance or cause premature failure. Special steel can also experience welding issues. Welding is frequently employed to join different components or structures made of special steel. However, inadequate adherence to proper welding techniques and procedures can yield defects such as weld cracks, porosity, or inadequate fusion. These defects can weaken the weld joint and compromise the overall structure's integrity. Lastly, dimensional instability can be problematic with special steel. Certain types of special steel, particularly those with high carbon content, may undergo dimensional changes when exposed to temperature variations. This can lead to material distortion or warping, affecting its fit, function, or assembly with other components. To address these failures or issues with special steel, it is crucial to adhere to appropriate material selection, design, manufacturing, and maintenance practices. Thorough inspections, implementation of corrosion protection measures, and ensuring proper heat treatment and welding procedures can help minimize the occurrence of these failures. This, in turn, improves the performance and longevity of special steel components.
- Q: How does special steel resist wear and abrasion?
- Special steel resists wear and abrasion due to its unique composition and manufacturing process. It is typically made from alloys with high levels of carbon, chromium, and other elements that enhance its hardness and strength. The addition of these elements creates a microstructure within the steel that is highly resistant to wear and abrasion. Additionally, special steel can be heat-treated to further increase its hardness and toughness, making it more resilient against the forces that cause wear and abrasion. Overall, the combination of alloying elements and heat treatment gives special steel its exceptional ability to resist wear and abrasion in various applications.
- Q: What are the different heat treatment grades of special steel?
- There are several different heat treatment grades of special steel, each with its own unique properties and applications. Some of the commonly used heat treatment grades include: 1. Annealed Steel: This grade of special steel is treated through the annealing process, which involves heating the steel to a specific temperature and then cooling it slowly to enhance its ductility and reduce its hardness. Annealed steel is typically used in applications where toughness and machinability are required. 2. Normalized Steel: Normalizing is a heat treatment process that involves heating the steel above its critical temperature and then cooling it in still air. This treatment refines the grain structure of the steel, improves its mechanical properties, and reduces internal stresses. Normalized steel is often used in applications where high strength and good weldability are desired. 3. Quenched and Tempered Steel: This grade of special steel undergoes a two-step heat treatment process. Firstly, the steel is heated to a high temperature and then rapidly cooled in a quenching medium such as oil or water. This process results in a hardened and brittle steel. To regain some toughness and reduce brittleness, the steel is then tempered by reheating it to a lower temperature. Quenched and tempered steel is commonly used in applications that require high strength, such as construction machinery, mining equipment, and automotive parts. 4. Precipitation Hardening Steel: This grade of special steel is treated by a combination of heat treatment and precipitation hardening. The steel is initially solution treated at high temperatures to dissolve alloying elements, followed by rapid cooling to retain a supersaturated solid solution. Subsequently, the steel is aged at a lower temperature for a specific period of time, allowing the formation of fine precipitates that contribute to increased strength and hardness. Precipitation hardening steel is utilized in applications where high strength and corrosion resistance are essential, such as aerospace components and high-performance tools. 5. Case Hardening Steel: Case hardening is a surface heat treatment process used to increase the hardness of the outer layer of steel while maintaining a tough and ductile core. This is achieved by carburizing or nitriding the steel, which introduces carbon or nitrogen into the surface layer, respectively. Case hardening steel is commonly used in applications requiring wear resistance, such as gears, bearings, and camshafts. These are just a few examples of the various heat treatment grades available in special steel. Each grade offers unique properties and advantages, allowing for a wide range of applications across different industries.
- Q: How is the hardness of special steel measured?
- The hardness of special steel is typically measured using methods such as Rockwell, Brinell, or Vickers hardness tests, which involve indenting the steel surface with a known force and measuring the resulting indentation size.
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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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