Grade AISI 4340 CNBM Forged Steel Round Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- 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
Grade AISI 4340 CNBM Forged Steel Round Bar
Name | SAE4340 Carbon Steel Round Bar |
Shape | Round Bar/Square Bar/Flat Bar/Plate/Wire |
Standard | GB/ASTM/SAE/AISI/DIN/JIS/EN/BS |
Surface Treatment: | Black/Peeling/Polished/Machined |
Delivery Condition: | Hot Rolled or Forged/Peeled or Black Surface |
Test | SGS/UT 100% Elements Testing |
Certificate: | ISO/Mill Certificate |
Service: | 24 hours online service / |
more than 20 years trading and manufacture | |
Quality Assurance: | the third party inspection, such as SGS, BV, TUV…etc. is acceptable |
Packaging Details: | seaworthy packaging or as per customer's packing instruction |
Machine Capability
Tensile strength (N/mm2Mpa): >=980(100)
Elongation: >=12
Yield strength: >=835(85)
Hardness:( HBS 100/3000)<=269
Reduction of area:>=55
Akv(J)>=78 akv(J/cm2):>=98(10)
Chemical Composition (%):
C | Si | Mn | S | P | Cr | Ni | Cu | Mo |
0.37-0.44 | 0.17-0.37 | 0.40-0.80 | 0.025(max) | 0.025(max) | 0.60-0.90 | 1.25-1.65 | 0.025(max) | 0.15-0.25 |
Packaging & Delivery
Packaging Detail | Sea worthy packing /as per customer's packing instruction |
Delivery Detail | 15 ~ 40 days after receiving the deposit |
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Workshop
FAQ
Are you a trading company or manufacturer? | Manufacturer |
What’s the MOQ? | 3 metric ton |
What’s your delivery time? | 15-35 days after downpayment received |
Do you Accept OEM service? | Yes |
what’s your delivery terms? | FOB/CFR/CIF |
What's the Payment Terms? | 30% as deposit,70% before shipment by T/T |
Western Union acceptable for small amount. | |
L/C acceptable for large amount. | |
Scrow ,Paybal,Alipay are also ok | |
Why choose us? | Chose happens because of quality, then price, We can give you both. |
Additionally, we can also offer professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposals. | |
What's your available port of Shipment? | Main Port, China |
What’s your featured services? | Our service formula: good quality+ good price+ good service=customer's trust |
Where are your Market? | Covering more than 160 countries in the world |
- Q: What are the main factors affecting the hardness of special steel?
- The main factors affecting the hardness of special steel include the composition of the steel, the heat treatment process, the grain size of the steel, and the presence of impurities or inclusions.
- Q: What are the different heat treatment furnaces used for special steel?
- There are several different heat treatment furnaces that are commonly used for special steel. These furnaces serve specific purposes and are designed to provide the required heating and cooling conditions for the steel to achieve the desired properties. One type of heat treatment furnace used for special steel is the annealing furnace. Annealing is a process that involves heating the steel to a specific temperature and then slowly cooling it to make it softer and more ductile. Annealing furnaces often have controlled atmospheres to prevent oxidation of the steel during the process. Another type of furnace used for special steel is the quenching furnace. Quenching is a process that involves rapidly cooling the steel to increase its hardness. Quenching furnaces are designed to provide the necessary cooling rate and often use specialized cooling mediums such as oil or water to achieve the desired results. Tempering furnaces are also commonly used for special steel. Tempering is a process that involves heating the steel to a specific temperature and then cooling it to improve its toughness and reduce brittleness. Tempering furnaces allow for precise temperature control during the process. In addition to these, there are also carburizing furnaces used for special steel. Carburizing is a process that involves introducing carbon into the steel's surface to increase its hardness. Carburizing furnaces have controlled atmospheres and are designed to provide the necessary temperatures and carbon-rich environments for the process. Overall, the different heat treatment furnaces used for special steel serve specific purposes such as annealing, quenching, tempering, or carburizing. These furnaces are designed to provide the required heating and cooling conditions to achieve the desired properties in the steel.
- Q: Can special steel be used in the mining equipment manufacturing industry?
- Yes, special steel can be used in the mining equipment manufacturing industry. Special steel, often known as alloy steel, offers improved strength, durability, and resistance to wear and corrosion compared to standard steel. These properties make it well-suited for the harsh and demanding conditions encountered in mining operations. Special steel can be utilized in various mining equipment components, such as drill bits, crushers, conveyor systems, and excavator buckets, to enhance their performance and prolong their lifespan.
- Q: What are the different applications of special steel in the construction industry?
- Special steels are highly versatile materials that find numerous applications in the construction industry. One of the primary uses of special steel in construction is in the production of structural components. Special steels, such as high-strength low-alloy (HSLA) steel and weathering steel, are commonly employed to construct buildings, bridges, and other infrastructure projects that require superior strength and durability. In addition to structural applications, special steel is also extensively utilized in the construction of pipelines. This is particularly true for oil and gas pipelines, where special steels with excellent resistance to corrosion and high-pressure conditions are crucial. Stainless steel, for instance, is commonly employed due to its exceptional corrosion resistance properties, making it ideal for harsh environments. Another vital application of special steel in construction is in the production of reinforcing bars, commonly known as rebars. Reinforcing steel bars are used to reinforce concrete structures, such as buildings, bridges, and highways, by providing additional strength to withstand tension forces. Special steel rebars, such as micro-alloyed steel or carbon steel, are specifically designed to enhance the structural integrity and durability of concrete structures. Furthermore, special steel is extensively used in the construction of high-rise buildings and skyscrapers. The exceptional strength, ductility, and fire resistance properties of special steels, such as carbon steel or alloy steel, make them ideal for constructing tall structures that can withstand heavy loads and resist the impact of fire incidents. Special steel also finds application in the construction of equipment and machinery used in the construction industry. For instance, high-speed steel (HSS) is commonly used to manufacture cutting tools, drill bits, and saw blades that are essential for various construction activities. HSS possesses exceptional hardness, wear resistance, and high-temperature strength, making it suitable for heavy-duty cutting and drilling applications. In conclusion, special steel plays a crucial role in the construction industry due to its superior strength, durability, corrosion resistance, and fire resistance properties. It finds applications in structural components, pipelines, reinforcing bars, high-rise buildings, and construction machinery. Special steel ensures the safety, longevity, and reliability of construction projects, making it an essential material in the industry.
- Q: What are the requirements for special steel used in military applications?
- Special steel used in military applications must meet certain requirements to ensure optimal performance and durability in the field. These requirements include: 1. High strength: Military applications often involve extreme conditions, such as heavy loads, impacts, and shocks. Special steel used in these applications must have high strength to withstand these forces without deformation or failure. 2. Toughness: The steel should have excellent toughness to resist cracking or fracturing under high-stress situations. This is crucial for ensuring the safety of military personnel and equipment. 3. Corrosion resistance: Military operations can take place in various environments, including marine or coastal areas where exposure to moisture, saltwater, and other corrosive elements is common. Special steel used in military applications should have good corrosion resistance to maintain its structural integrity over time. 4. Heat resistance: Military equipment often encounters high temperatures due to friction, combustion, or exposure to explosives. The steel used must have good heat resistance to prevent deformation or loss of strength under these conditions. 5. Wear resistance: Military equipment is subject to frequent use, abrasive contact, and potential impact with foreign objects. Special steel used in these applications should have excellent wear resistance to minimize damage and prolong the lifespan of the equipment. 6. Machinability: Special steel used in military applications should be easy to machine and process into various shapes and sizes. This ensures that it can be tailored to specific requirements and easily integrated into different military systems. 7. Cost-effectiveness: While meeting all the above requirements, special steel used in military applications should also be cost-effective. The steel must offer a good balance between performance and cost to ensure efficient use of resources. By meeting these requirements, special steel used in military applications can provide the necessary strength, durability, and reliability needed for military operations, ensuring the safety and effectiveness of military personnel and equipment.
- Q: Can special steel be used in the production of turbine blades?
- Yes, special steel can be used in the production of turbine blades. Special steel alloys, such as nickel-based superalloys, are commonly used due to their high strength, heat resistance, and excellent corrosion resistance, making them suitable for the demanding conditions and extreme temperatures experienced in turbine engines.
- Q: What are the properties of magnetic alloy steel?
- Magnetic alloy steel possesses a combination of magnetic and mechanical properties that make it suitable for various applications. It exhibits high magnetic permeability, allowing it to attract and retain magnetic fields efficiently. Additionally, it boasts excellent strength, hardness, and wear resistance, making it ideal for manufacturing components in electrical transformers, motors, generators, and magnetic cores. Its properties can be further enhanced through heat treatment processes, ensuring optimal performance in magnetic applications.
- Q: What are the requirements for special steel used in power plants?
- The requirements for special steel used in power plants are specific and stringent, given the critical role that these materials play in ensuring the safe and efficient operation of power generation facilities. Some of the key requirements for special steel in power plants include: 1. High temperature resistance: Special steel used in power plants must be able to withstand high temperatures without losing its structural integrity. This is crucial as power plants operate at elevated temperatures, especially in areas such as the combustion chamber or steam turbines. 2. Corrosion resistance: Power plants often operate in environments with high levels of moisture, chemicals, and other corrosive elements. Special steel must possess excellent corrosion resistance to prevent degradation and premature failure caused by chemical reactions or rusting. 3. Strength and toughness: As power plants generate significant amounts of energy, the components made of special steel must exhibit high strength and toughness to withstand the mechanical stresses and loads they are subjected to. This includes resistance to fatigue, creep, and stress corrosion cracking. 4. Weldability: Power plant components often require welding during fabrication or maintenance. Special steel should have good weldability to ensure strong and reliable joints that maintain the structural integrity of the overall system. 5. Low thermal expansion: Special steel used in power plants should have low thermal expansion properties to minimize the risk of thermal stress and distortion that can occur due to temperature variations during operation. This ensures dimensional stability and prevents premature failure. 6. Resistance to radiation: In some power plants, such as nuclear facilities, special steel may be exposed to radiation. Therefore, it is necessary for the steel to have good resistance to radiation damage, ensuring its long-term performance and safety. 7. Compliance with industry standards: Special steel used in power plants must meet specific industry standards and codes to ensure its quality, reliability, and safety. These may include standards such as ASTM, ASME, or ISO, among others. Overall, the requirements for special steel used in power plants are driven by the need for high temperature resistance, corrosion resistance, strength, weldability, low thermal expansion, radiation resistance, and compliance with industry standards. Meeting these requirements ensures the integrity and longevity of power plant components, contributing to the safe and efficient generation of electricity.
- Q: What are the physical properties of special steel?
- Compared to regular steel, special steel possesses unique physical properties. These properties can vary depending on the specific composition and processing techniques employed. However, special steel typically exhibits high strength, hardness, and durability. Its design often aims to withstand extreme conditions, including high temperatures, pressure, and corrosive environments. Additionally, special steel may display exceptional wear resistance, making it suitable for applications involving heavy machinery or cutting tools. Moreover, it can possess superior electrical and thermal conductivity, along with favorable magnetic properties. In conclusion, the physical properties of special steel render it highly versatile and valuable across various industries, such as automotive, aerospace, construction, and energy.
- Q: How does special steel contribute to the electrical conductivity of products?
- Several methods can be employed to utilize special steel in enhancing the electrical conductivity of products. Firstly, the formulation of special steel alloys can be tailored with specific chemical compositions that enhance its electrical conductivity. For instance, the addition of elements like copper, silver, or nickel to the steel creates additional pathways for the flow of electric current, thus increasing the conductivity. Moreover, manipulating the microstructure of special steel can also contribute to improved electrical conductivity. By controlling the size and orientation of the steel's grains, the resistance to the flow of electrons can be reduced, consequently enhancing the overall conductivity of the material. Furthermore, subjecting special steel to heat treatment or other processes can further enhance its electrical conductivity. Techniques such as annealing or tempering can effectively eliminate impurities and enhance the crystal structure of the steel, resulting in improved conductivity. In addition to these methods, special steel can also be designed with low magnetic permeability, reducing its resistance to the flow of magnetic fields. This characteristic proves advantageous in applications where minimizing electromagnetic interference is crucial, such as in electrical connectors or transformers. To summarize, special steel contributes to the electrical conductivity of products through various means, including its chemical composition, microstructural control, heat treatment, and low magnetic permeability. By optimizing these factors, special steel can significantly enhance the performance of electrical components and systems.
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Grade AISI 4340 CNBM Forged Steel Round Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- 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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