Grade SAE 4340 Alloy Steel Price List Hot Rolled
- 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:
Spring Steel
Shape:
Steel Round Bar
Product Description:
Round bar | |||||||
Dia:16mm~700mm | Length:2m~6m | ||||||
Flat bar | |||||||
Thickness:20mm~500mm | Length:2m~12m | ||||||
Dimensions can be customized | |||||||
OKorder is offering Grade SAE 4340 carbon steel at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.
Product Applications:
Grade SAE4340 carbon steels are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.
Product Advantages:
OKorder's Grade SAE51200/ GCr15 / 100cr6 Bearing Steel are durable, strong, and resist corrosion.
Chemical Composition:
Comparative standard | Grade | C | Si | Mn | Cr | Mo | P | S | Ni |
GB | 40CrNiMoA | 0.36-0.44 | 0.10-0.350 | 0.45-0.70 | 1.10-1.40 | 0.20-0.35 | 0.03 | 0.02 | 1.30-1.7 |
AISI | 4337/4340 |
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JIS | SNCM8 |
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DIN | 34CrNiMo6/1.6582 | 0.34 | max 0.40 | 0.65 | 1.5 | 0.23 | 0.03 | 0.03 | 1.5 |
Packaging & Delivery of Carbon Steel
Standard seaworthy packing or as customer required
Delivery time:
Within 30 days after order is confirmed.
- Q: How is special steel used in the construction supply chain?
- Special steel is used in the construction supply chain for various purposes. It is commonly used in the manufacturing of structural components, such as beams, columns, and reinforcement bars, due to its high strength and durability. Special steel is also utilized in the production of specialized tools and equipment used in construction, such as cranes, excavators, and drilling rigs. Furthermore, it plays a crucial role in the fabrication of pre-engineered buildings and modular construction systems. Overall, the use of special steel in the construction supply chain allows for the development of robust and efficient structures, enhancing the overall safety and longevity of construction projects.
- Q: How does special steel perform in abrasive environments?
- Special steel performs exceptionally well in abrasive environments. Its high hardness and resistance to wear make it ideal for applications where there is constant contact with abrasive materials. Special steel can withstand the impact and friction caused by abrasive particles, ensuring longevity and durability in such environments. Additionally, its corrosion resistance properties prevent the steel from deteriorating due to exposure to moisture or chemicals commonly found in abrasive environments. Overall, special steel is specifically designed to excel in abrasive conditions, providing optimal performance and reliability.
- Q: What are the different testing methods used for special steel?
- There are several testing methods commonly used for special steel, including mechanical testing, non-destructive testing (NDT), and chemical analysis. Mechanical testing involves evaluating the physical properties of the steel, such as tensile strength, hardness, and impact resistance. NDT methods, such as ultrasonic testing, magnetic particle inspection, and radiographic testing, are used to detect defects or flaws in the steel without causing any damage. Chemical analysis involves determining the composition and elemental content of the steel, which is crucial for ensuring its quality and performance. These testing methods are essential in ensuring the reliability and suitability of special steel for various applications.
- Q: What are the requirements for special steel used in cryogenic applications?
- To ensure optimal performance and reliability in extremely low-temperature environments, special steel employed in cryogenic applications must fulfill a range of prerequisites. First and foremost, the steel must exhibit exceptional low-temperature toughness, enabling it to endure the extreme cold without succumbing to brittle fracture or compromising its mechanical properties. It is imperative that the steel possesses high toughness and ductility to effectively absorb impacts and prevent cracking. Moreover, the steel must possess a low coefficient of thermal expansion. This characteristic assumes significance as cryogenic applications involve substantial temperature fluctuations. A high coefficient of thermal expansion can result in dimensional instability and stress within the material. Conversely, a low coefficient of thermal expansion mitigates these effects and maintains dimensional stability. Furthermore, the steel should demonstrate low thermal conductivity. Given that cryogenic applications often entail the transfer or storage of substances at extremely low temperatures, minimizing heat transfer is essential. A low thermal conductivity aids in maintaining the desired temperature and prevents unwanted heat exchange. This aspect is particularly critical in applications where precise temperature control is paramount, such as the storage of liquefied gases. In addition, the steel must exhibit excellent corrosion resistance. Cryogenic environments can be highly corrosive, necessitating the steel's ability to withstand the detrimental effects of corrosive substances that may be present. This attribute is particularly vital in applications involving the storage or transportation of cryogenic liquids or gases. Finally, the steel should possess good weldability. Welding is often necessary to join different components or sections of the steel in cryogenic applications. Therefore, ensuring the steel's weldability is crucial to establish strong and reliable joints. In summary, the requirements for special steel used in cryogenic applications encompass exceptional low-temperature toughness, a low coefficient of thermal expansion, low thermal conductivity, excellent corrosion resistance, and good weldability. Satisfying these requirements guarantees the steel's ability to withstand the harsh conditions and extreme cold of cryogenic environments while preserving its structural integrity and performance.
- Q: How does special steel contribute to the defense equipment industry?
- Special steel contributes to the defense equipment industry by providing crucial materials with superior strength, durability, and resistance to extreme conditions. It is used in the manufacturing of various defense equipment, including armored vehicles, submarines, aircraft carriers, and missiles. The unique properties of special steel enable the production of advanced weaponry and protective gear, enhancing the overall performance and effectiveness of defense systems.
- Q: Is the steel column of the steel structure HM a special steel?
- H steel is a new type of economical construction steel. H type steel cross section shape is reasonable in economy, good mechanical properties, rolling each point on the extended section is uniform, small internal stress, compared with the ordinary beam, a section modulus, light weight, saving advantages of metal, can make the building structure to reduce 30-40%;
- Q: What are the different methods of strengthening special steel?
- There are several methods of strengthening special steel, each with its own advantages and applications. One common method is through heat treatment, which involves heating the steel to a specific temperature and then cooling it rapidly or slowly, depending on the desired outcome. This can include processes like quenching, tempering, and annealing, which modify the microstructure of the steel to enhance its mechanical properties. Another method is alloying, where different elements are added to the steel to improve its strength. For example, adding elements like chromium, nickel, or molybdenum can increase the steel's resistance to corrosion, while elements like vanadium or tungsten can enhance its hardness and wear resistance. Cold working is another technique used to strengthen special steel, which involves deforming the steel at room temperature through processes like rolling, forging, or drawing. This helps to align the steel's crystalline structure, increasing its strength and hardness. Additionally, surface treatments can be applied to special steel to improve its strength. These can include techniques like carburizing, nitriding, or plating, which introduce a hardened layer or coating on the surface of the steel to enhance its wear resistance and durability. Each of these methods has its own advantages and can be tailored to suit specific applications and requirements. By combining various strengthening techniques, special steel can be customized to meet a wide range of industrial needs, making it a versatile and reliable material.
- Q: What are the different wear-resistant grades of special steel?
- In the market, one can find various grades of special steel that are resistant to wear. Each grade has its own unique properties and applications. Some commonly used grades include: 1. D2 Steel: This grade is known for its high resistance to wear and its exceptional toughness. It is often utilized in the manufacturing of cutting tools, punches, and dies. 2. M2 Steel: M2 steel is a type of high-speed steel that exhibits remarkable resistance to wear and heat. It is commonly employed in the production of drill bits, milling cutters, and other tools that require high hardness and wear resistance. 3. A2 Steel: A2 steel is a versatile grade known for its excellent resistance to wear and toughness. It is frequently utilized in the manufacturing of cold work tools, such as blanking dies and gauges. 4. O1 Steel: O1 steel is an oil-hardening tool steel that possesses good wear resistance and dimensional stability. It is commonly used in the production of blades, punches, and other cutting tools. 5. S7 Steel: S7 steel is a grade that is highly resistant to shock and wear. It is often employed in the manufacturing of chisels, shear blades, and other tools that require resistance to impact and wear. 6. AR400 Steel: AR400 steel is a specific type of abrasion-resistant steel that has a hardness of approximately 400 Brinell. It is frequently utilized in heavy-duty applications such as mining equipment, bulldozer blades, and dump truck bodies. These examples merely scratch the surface of the various wear-resistant grades of special steel available in the market. The choice of grade depends on the specific requirements of the application, including the type and intensity of wear, operating conditions, and desired hardness. Seeking advice from a steel supplier or expert can aid in selecting the most suitable grade for a particular application.
- Q: How is special steel graded?
- Special steel is graded based on various factors such as its chemical composition, mechanical properties, and intended application. The grading system provides a standardized classification that helps in identifying and selecting the appropriate type of steel for specific purposes. One common method of grading special steel is through the use of alphanumeric codes. These codes typically consist of a combination of letters and numbers that represent specific characteristics of the steel. For example, the American Iron and Steel Institute (AISI) uses a four-digit numbering system to grade different types of steel alloys. The first digit indicates the main alloying element, such as carbon or manganese, while the subsequent digits provide additional details about the composition and properties of the steel. In addition to the alphanumeric codes, special steel can also be graded based on its mechanical properties. This involves testing the steel's strength, hardness, toughness, and other performance indicators. The results of these tests are then used to assign a specific grade to the steel, which helps users determine its suitability for certain applications. International standards organizations, such as ASTM International and the International Organization for Standardization (ISO), provide guidelines and specifications for the grading of special steel based on these mechanical properties. Furthermore, the intended application of the special steel also plays a significant role in its grading. Certain industries, such as aerospace or automotive, have specific requirements for the materials they use. Therefore, special steel intended for these sectors is graded based on its ability to meet those requirements, such as corrosion resistance, heat resistance, or wear resistance. Special steel grades can also be classified based on their ability to withstand extreme conditions or perform specific functions, such as tool steels for cutting or forming operations. Overall, the grading of special steel involves considering its chemical composition, mechanical properties, and intended application. By utilizing standardized grading systems and specifications, manufacturers, engineers, and other users can easily identify and select the most suitable type of special steel for their specific needs.
- Q: What are the common heat treatment methods used for special steel?
- Special steel can undergo various heat treatment methods to enhance its mechanical properties and performance. Some commonly used techniques include: 1. Annealing: By heating the steel to a specific temperature and gradually cooling it, internal stresses are relieved and a refined microstructure is formed. This process improves the steel's machinability and ductility. 2. Normalizing: The steel is heated above its critical point and then cooled in still air. This method refines the grain structure, enhances toughness, and improves strength. 3. Quenching: Rapid cooling is achieved by immersing the steel in a quenching medium like water, oil, or polymer. It increases hardness and strength by forming a hard martensitic structure. However, quenching may introduce internal stresses and decrease toughness, so tempering is often performed afterwards. 4. Tempering: Quenched steel is reheated to a specific temperature and gradually cooled. This relieves internal stresses, reduces hardness, and improves toughness and ductility. Tempering also enhances resistance to brittle fracture. 5. Austempering: Steel is quenched to a temperature slightly above its martensitic transformation range, followed by holding it at this temperature until austenite transforms into bainite. This unique microstructure offers a combination of high strength and good toughness. 6. Martempering: Similar to austempering, but the steel is quenched just below its martensitic transformation range and held at that temperature until transformation is complete. Martempering produces a microstructure with improved strength and toughness compared to conventional quenching. These heat treatment methods are widely used to tailor special steel properties according to specific applications and requirements. The choice of method depends on factors such as desired mechanical properties, steel composition, and the intended use of the final product.
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Grade SAE 4340 Alloy Steel Price List Hot Rolled
- 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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