SAE 4140 4150 4340 Alloy Steel Round Steel Bar
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- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
SAE 4140 4150 4340 Alloy Steel Round Steel Bar
Product Information:
1.Grade:SAE8620 SNCM220 805M20 4150 4140 4130 EN24 4340
2.Size: 12mm-300mm
3.Standard Performed: ASTM A29/A29M-04
4.Quality: AISI8620
Chemical Composition(%)
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo |
| 8620 | 0.18-0.23 | 0.15-0.35 | 0.70-0.90 | Max 0.035 | Max 0.035 | 0.40-0.60 | 0.40-0.70 | 0.15-0.25 |
Product Overviews:
| Product Name | Typical Grades | Diameter(mm) | Standard adopted |
| Carbon Steel | 20 (1020/S20C/C22) | Ø16-Ø300 | GB/SAE/JIS/DIN |
| 40 (1040/S40C/C40) | |||
| 45 (1045/S45C/C45) | |||
| Bearing Steel | GCr9 (51100/SUJ1) | Ø12-Ø250 | |
| GCr15 (52100/SUJ2/100Gr6) | |||
| GCr9SiMn (A485-Gr.1/SUJ3) | |||
| Cr-Mo Steel | 20Cr (5120/SCr420H/20Cr4) | Ø12-Ø250 | |
| 40Cr (5140/SCr440/41Cr4) | |||
| 42CrMo(4140/SCM440/42CrMo4) | |||
| Gear Steel | 20CrNiMo | Ø16-Ø600 | |
| 20CrMn(5115/SMnC420/20MnCr5) | |||
| 20CrNiMo(8620/SNCM220/20CrMiMo2) |
Product Show:
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- Q: How is special steel used in the production of consumer goods?
- Special steel is used in the production of consumer goods primarily due to its enhanced properties such as strength, durability, and resistance to corrosion. It is commonly utilized in the manufacturing of various products like kitchen appliances, automobiles, power tools, and even jewelry. This type of steel allows for the creation of high-quality, long-lasting consumer goods that can withstand wear and tear, ensuring customer satisfaction and product longevity.
- Q: How does special steel perform under high-temperature conditions?
- Special steel is specifically designed to perform well under high-temperature conditions. It exhibits excellent resistance to thermal expansion, oxidation, and creep, allowing it to maintain its structural integrity and mechanical properties when exposed to elevated temperatures. The unique composition of special steel, which often includes elements such as chromium, nickel, and molybdenum, contributes to its high-temperature performance. These alloying elements form a protective oxide layer on the surface of the steel, known as passivation, which acts as a barrier against corrosion and further enhances its resistance to high temperatures. Additionally, the microstructure of special steel is carefully controlled through various heat treatment processes, such as quenching and tempering, to achieve optimal toughness and strength even at elevated temperatures. Overall, special steel demonstrates exceptional performance and reliability in high-temperature environments, making it a preferred choice for applications such as power generation, aerospace, and petrochemical industries.
- Q: What are the different alloying elements used in special steel?
- Some of the different alloying elements used in special steel include chromium, nickel, molybdenum, vanadium, tungsten, and cobalt. These elements are added in varying amounts to enhance the steel's specific properties such as corrosion resistance, strength, hardness, and heat resistance.
- Q: How does special steel contribute to the machinability of products?
- Special steel plays a significant role in enhancing the machinability of products. Machinability refers to the ease with which a material can be cut, drilled, or shaped using various machining processes. Special steel, also known as alloy steel, is specifically formulated to contain certain elements that improve its machinability characteristics. One key aspect of special steel that contributes to its enhanced machinability is its composition. By incorporating alloying elements such as manganese, sulfur, and phosphorus, special steel achieves improved machinability compared to regular carbon steel. These elements help in reducing friction during machining operations, resulting in reduced tool wear and extended tool life. Additionally, the presence of these elements facilitates the formation of smaller and more manageable chips during cutting, making it easier to control the machining process and maintain dimensional accuracy. Moreover, special steel often undergoes specific heat treatment processes, such as annealing or quenching and tempering, to further enhance its machinability. Heat treatment improves the steel's microstructure, making it more uniform and refined, which in turn improves its machinability characteristics. Heat-treated special steel exhibits better hardness, toughness, and resistance to wear, all of which are crucial for achieving high-quality machined products. Furthermore, special steel can be engineered to possess other desirable properties, such as high strength, corrosion resistance, or heat resistance, while still maintaining good machinability. This versatility allows manufacturers to select the most suitable special steel for their specific machining applications, ensuring optimal performance and productivity. In conclusion, special steel significantly contributes to the machinability of products due to its specific composition, heat treatment processes, and versatile properties. By utilizing special steel, manufacturers can achieve better machining performance, improved tool life, and higher dimensional accuracy, ultimately leading to superior quality products.
- Q: Can special steel be used for precision instruments?
- Yes, special steel can be used for precision instruments. Special steel, known for its high strength, durability, and resistance to corrosion, is often used in the manufacturing of precision instruments such as surgical tools, watches, measuring devices, and scientific equipment. Its unique properties allow for precise and accurate performance, making it an ideal material choice for precision instruments.
- Q: How does surface treatment enhance the performance of special steel?
- Surface treatment enhances the performance of special steel by improving its resistance to corrosion, wear, and fatigue. This treatment creates a protective layer on the surface of the steel, which acts as a barrier against environmental factors such as moisture, chemicals, and abrasive substances. It also enhances the steel's hardness, smoothness, and adhesion, leading to improved durability, strength, and longevity. Additionally, surface treatment can provide aesthetic benefits, such as improved appearance and color options, further enhancing the overall performance of special steel.
- Q: How is mold steel used in injection molding?
- Mold steel is used in injection molding to create the molds or tooling that are used to produce plastic parts. The steel is used to form the cavity or core of the mold, which determines the shape of the final product. Mold steel is chosen for its high strength, durability, and heat resistance to withstand the high pressures and temperatures involved in the injection molding process.
- Q: Is special steel suitable for electrical and electronic applications?
- Yes, electrical and electronic applications can benefit from the use of special steel. Special steel refers to steel alloys that are specifically designed to have certain properties or characteristics that make them suitable for specific applications. When it comes to electrical and electronic applications, special steel offers several advantages. One of the main requirements for electrical and electronic applications is high electrical conductivity. Although steel is not known for its electrical conductivity, certain special steel alloys can be engineered to have improved electrical conductivity. For example, by adding elements like nickel or copper to stainless steel, its electrical conductivity can be enhanced, making it suitable for applications where efficient flow of electrical current is needed. Magnetic properties are also important for electrical and electronic applications. Some special steel alloys exhibit exceptional magnetic properties, making them ideal for use in transformers, motors, and generators. These alloys possess qualities such as high magnetic permeability, low coercivity, and low hysteresis losses, which are crucial for efficient energy transfer and minimal power loss. Additionally, special steel provides excellent corrosion resistance, which is essential for electrical and electronic equipment that may come into contact with moisture or harsh environments. Stainless steel, for instance, is highly resistant to corrosion, ensuring the longevity and reliability of the equipment. In conclusion, special steel can be suitable for electrical and electronic applications when it possesses the necessary electrical conductivity, magnetic properties, and corrosion resistance. Manufacturers can ensure the performance, durability, and reliability of electrical and electronic equipment by selecting the appropriate special steel alloy.
- Q: What are the specific requirements for special steel used in nuclear applications?
- The specific requirements for special steel used in nuclear applications include high resistance to corrosion, excellent mechanical properties, and the ability to withstand high temperatures and neutron irradiation. Additionally, the steel must possess low levels of impurities and be highly resistant to embrittlement. It must also be capable of maintaining its integrity and structural stability over long periods of time, ensuring the safety and reliability of nuclear systems.
- Q: What are the requirements for special steel used in transportation infrastructure?
- Special steel used in transportation infrastructure must meet certain requirements to ensure its durability, strength, and resistance to various environmental factors. Some of the key requirements for special steel in transportation infrastructure include: 1. High Strength: Special steel used in transportation infrastructure must have high tensile strength to withstand heavy loads and stresses. It should be able to resist deformation and maintain its structural integrity under significant pressure. 2. Corrosion Resistance: Transportation infrastructure is often exposed to harsh weather conditions, including rain, humidity, and saltwater. Special steel must have excellent corrosion resistance to prevent rusting and deterioration over time. This is particularly important for bridges, tunnels, and railway tracks located near coastal areas. 3. Fatigue Resistance: Transportation infrastructure experiences repetitive and cyclic loading, which can lead to fatigue failure if the steel used is not resistant to this type of stress. Special steel should have good fatigue resistance properties to prevent cracking and failure due to repeated loading. 4. Weldability: Special steel used in transportation infrastructure should have good weldability to facilitate construction and repairs. It should be easily weldable without compromising its strength and performance. 5. Impact Resistance: Transportation infrastructure, such as guardrails and crash barriers, is subjected to impact loads from vehicles. Special steel should possess excellent impact resistance to absorb and distribute the energy from impacts, reducing the risk of catastrophic failure. 6. Fire Resistance: In the event of a fire, special steel used in transportation infrastructure should have a high melting point and retain its structural integrity for a reasonable amount of time. This is crucial for ensuring the safety of passengers and minimizing the damage caused by fire incidents. 7. Low Maintenance: For cost-effectiveness and long-term sustainability, special steel used in transportation infrastructure should require minimal maintenance. It should have a long service life and minimal need for repainting, repair, or replacement. Meeting these requirements ensures that the special steel used in transportation infrastructure can provide a safe, reliable, and durable foundation for roads, bridges, railway tracks, and other critical components of the transportation network.
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SAE 4140 4150 4340 Alloy Steel Round Steel Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 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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