SAE 4340 Alloy Steel Round Bar SCM430 Steel Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 50000 m.t./month
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Quality Product, Order Online Tracking, Timely Delivery
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
SAE 4340 Alloy Steel Round Bar SCM430 Steel Bar
Product Details:
1) Melting process: BOF + LF + VD
2) Heat treatment: Normalized / Annealed / Quenched / Tempered
3) Surface condition: Black surface / Peeled / Turned / Milled
4) Straightness: Max.3mm/1000mm
5) Appearance: Free of cracks, visible inclusions, pit on the appearance;
6) Guarantee: Ultrasonic test according to SEP 1921-84 G3 C/c
7) Certificate of quality: SGS
8) Marking: Grade, Heat No.,Diameter will be stamped one each bar with required color
9) Packing: In bulk packing
10) MOQ: 25 tons / Grade / Size
11) Delivery time: 30 days
12) Payment: T/T or 100% LC at sight.
Designation by Standards
rand Name | Ravne No. | Mat. No. | DIN | EN | AISI |
42CD4 | 514 | 1.7225 | 42CrMo4 | - | 4140 |
Chemical Composition (in weight %)
C | Si | Mn | Cr | Mo | Ni | V | W | Others |
0.39-0.45 | 0.1-0.4 | 0.6-0.9 | 0.9-1.2 | 0.15-0.25 | - | - | - | - |
Application:
ASTM 4340 Steel Bar have been used in aviation,aerospace,navigation,nuclear energy,chemical industry,
electronic information,machine manufacture, petrochemical, automotive,instrument and meter, Communication ,transportation, and medical instruments etc.
Product Show:
- Q: What are the main applications of special steel in the pharmaceutical industry?
- Special steel is widely used in the pharmaceutical industry for various applications. One of the main applications is in the manufacturing of equipment and machinery used for drug production, such as mixing tanks, reactors, and centrifuges. Special steel is preferred in these applications due to its excellent corrosion resistance, high strength, and durability, ensuring the integrity of the pharmaceutical processes and preventing contamination. Additionally, special steel is also used for constructing cleanroom furniture and fixtures, which require high cleanliness standards to maintain the sterility of pharmaceutical environments. Overall, special steel plays a crucial role in ensuring the quality, safety, and efficiency of pharmaceutical manufacturing processes.
- Q: How is special steel used in the production of heat exchangers?
- Special steel, with its unique properties, finds extensive application in the production of heat exchangers. These devices are designed to transfer heat between different mediums, and special steel offers several advantages in this process. To begin with, the thermal conductivity of special steel is exceptional, allowing for efficient heat transfer between fluids. This characteristic is vital for heat exchangers as it enables the rapid and effective exchange of thermal energy. Moreover, special steel exhibits high resistance to corrosion, making it highly suitable for heat exchanger applications. Since heat exchangers often come into contact with corrosive fluids or gases, regular steel may deteriorate over time. However, special steel is specifically engineered to resist corrosion, ensuring the durability and reliability of the heat exchanger. Furthermore, special steel possesses remarkable strength and durability, enabling heat exchangers to withstand high pressures and temperatures. Given that heat exchangers frequently operate in challenging environments, special steel can endure these harsh conditions without compromising its structural integrity. Additionally, special steel offers excellent weldability and formability, simplifying the manufacturing of intricate heat exchanger designs. Its versatility allows for the production of heat exchangers in various shapes and sizes, catering to the specific requirements of different industries. In conclusion, special steel is an ideal material for heat exchanger applications due to its high thermal conductivity, corrosion resistance, strength, durability, weldability, and formability. These properties ensure efficient heat transfer, resistance to corrosion, and the ability to withstand harsh operating conditions.
- Q: How does special steel perform in molding applications?
- Special steel is highly preferred in molding applications due to its exceptional properties and performance. Firstly, special steel possesses excellent hardness and wear resistance, making it highly resistant to deformation and wear during the molding process. This ensures that the steel maintains its shape and integrity, even when subjected to high pressure and temperature. Moreover, special steel has excellent thermal conductivity, which allows for efficient heat transfer during the molding process. This helps in achieving uniform heating and cooling of the mold, resulting in consistent and high-quality molded products. Additionally, the high thermal conductivity of special steel also aids in reducing cycle times, thereby increasing productivity. Furthermore, special steel exhibits superior corrosion resistance, preventing any chemical reactions or rusting that may occur during the molding process. This ensures that the steel remains durable and long-lasting, even when exposed to moisture or corrosive substances. In terms of machinability, special steel is easily workable, allowing for precise and intricate mold designs. This enables the production of complex and detailed molded products with high accuracy and dimensional stability. Lastly, special steel offers excellent strength and toughness, making it highly resistant to cracking or fracturing under high stress conditions. This ensures the longevity and reliability of the mold, reducing the need for frequent repairs or replacements. Overall, the exceptional properties of special steel, including hardness, wear resistance, thermal conductivity, corrosion resistance, machinability, and strength, make it an ideal choice for molding applications. It guarantees high-quality and consistent molded products, increased productivity, and a longer lifespan for the molds.
- Q: How is special steel used in the construction manufacturing process?
- Special steel is used in the construction manufacturing process due to its unique properties and characteristics. It is commonly utilized in the production of structural components, such as beams, columns, and reinforcements, where high strength, durability, and resistance to corrosion are crucial. Special steel also finds application in the manufacturing of machinery, equipment, and tools used in construction, thanks to its ability to withstand heavy loads and extreme conditions. Additionally, it is used for specialized purposes like in the construction of bridges, skyscrapers, and other architectural marvels, where its exceptional strength and reliability are essential for ensuring the safety and longevity of the structures.
- Q: What are the different forging grades of special steel?
- In the market, there exists a variety of forging grades for special steel, each possessing its own distinctive characteristics and applications. Among the most frequently utilized forging grades are: 1. Carbon Steel: Noted for its exceptional strength and durability, carbon steel is a favored option for forging. Its hardness and toughness are determined by the varying levels of carbon present. Carbon steel forgings find widespread usage in the automotive, construction equipment, and machinery industries. 2. Alloy Steel: By incorporating diverse alloying elements, such as manganese, chromium, nickel, or molybdenum, into carbon steel, alloy steel is created. This augmentation enhances its strength, corrosion resistance, and wear resistance. The aerospace, defense, oil and gas, and power generation sectors extensively employ alloy steel forgings. 3. Stainless Steel: Stainless steel, an alloy resistant to corrosion, contains a minimum of 10.5% chromium. It boasts remarkable resistance against rust and staining, rendering it suitable for applications in harsh environments or where hygiene is of utmost importance. Stainless steel forgings are commonly employed in the food processing, chemical, and medical industries. 4. Tool Steel: Tailor-made for utilization in cutting tools, molds, and dies, tool steel exhibits high hardness, wear resistance, and toughness, enabling it to withstand elevated temperatures and heavy loads. Tool steel forgings are utilized in the production of drills, saw blades, punches, and an array of precision tools. 5. High-Speed Steel: High-speed steel, a specific type of tool steel, retains its hardness even when employed at high speeds. It incorporates additional elements such as tungsten, molybdenum, or vanadium, which enhance its resistance to heat and wear. High-speed steel forgings are employed in the production of cutting tools, drills, and milling cutters. 6. Maraging Steel: Maraging steel, a low-carbon, high-nickel steel alloy, is renowned for its extraordinary strength and toughness. Through heat treatment, it achieves high tensile strength while maintaining good ductility. Maraging steel forgings find extensive application in the aerospace, defense, and missile systems industries. These aforementioned examples merely represent a selection of the diverse forging grades of special steel available in the market. Each grade proffers distinct properties tailored to specific applications, ensuring the appropriate material can be chosen to meet desired performance and durability requirements.
- Q: What are the different manufacturing processes used for special steel?
- There are several different manufacturing processes used for special steel, depending on the specific requirements and properties desired for the final product. Some of the commonly used manufacturing processes for special steel include: 1. Electric Arc Furnace (EAF): This process involves melting scrap metal in an electric arc furnace, where high electrical current passes through the electrodes to melt the metal. EAF is commonly used for producing stainless steel, tool steel, and alloy steel. 2. Basic Oxygen Furnace (BOF): BOF is a process where molten iron from a blast furnace is combined with scrap metal and oxygen is blown through the mixture to remove impurities. BOF is widely used for producing carbon and low-alloy steels. 3. Vacuum Degassing: This process is used to remove impurities like hydrogen, nitrogen, and sulfur from steel by subjecting it to a vacuum environment. Vacuum degassing is often employed for producing high-quality and ultra-clean special steels. 4. Continuous Casting: In this process, molten steel is poured into a water-cooled mold, where it solidifies into a continuous strand. Continuous casting helps to produce steel with a consistent shape, size, and internal structure, and is commonly used for semi-finished products like billets, slabs, and blooms. 5. Powder Metallurgy: This manufacturing process involves compacting metal powders into the desired shape and then sintering them at high temperatures to bond the particles together. Powder metallurgy is often used for producing special steels with specific properties, such as high strength, wear resistance, or corrosion resistance. 6. Heat Treatment: Heat treatment processes like annealing, quenching, and tempering are commonly employed to modify the microstructure and properties of special steels. These processes involve heating the steel to specific temperatures and then cooling it in a controlled manner to achieve desired hardness, toughness, and other mechanical properties. Each of these manufacturing processes has its own advantages and limitations, and the choice of process depends on factors such as the type of steel required, the desired properties, and the cost-effectiveness of the process for a particular application.
- Q: What are the different production methods for special steel?
- There are several production methods for special steel, including electric arc furnace (EAF), basic oxygen furnace (BOF), and vacuum arc remelting (VAR). Each method has its own advantages and is used depending on the specific requirements of the steel being produced. EAF is commonly used for recycling scrap steel and allows for flexibility in alloy composition. BOF is more suitable for large-scale production and is known for its efficiency in removing impurities. VAR is a specialized method used to refine and purify steel, resulting in high-quality, homogeneous products.
- Q: How does special steel contribute to reducing product costs?
- Special steel contributes to reducing product costs in several ways. Firstly, special steel is known for its high strength and durability, which allows manufacturers to design and produce products that have a longer lifespan. This reduces the need for frequent replacements or repairs, thus saving costs in the long run. Additionally, special steel can be customized to meet specific requirements, allowing for the production of lighter and more efficient products. This can lead to savings in terms of raw material usage, transportation costs, and energy consumption. Moreover, special steel often has excellent corrosion resistance, reducing the need for additional protective coatings or maintenance, which can also result in cost savings. Overall, the utilization of special steel in manufacturing processes helps optimize product performance, longevity, and efficiency, thereby contributing to reducing product costs.
- Q: How does special steel contribute to the hardness of products?
- The hardness of products is enhanced by special steel due to its distinct composition and manufacturing techniques. Unlike regular steel, special steel is mixed with additional elements like chromium, nickel, and manganese, which bolster its strength and durability. These alloying elements combine with the steel matrix to form solid solutions, resulting in a more rigid and compact structure. The inclusion of these alloying elements in special steel allows for the creation of diverse microstructures, including fine-grained structures and martensitic structures, which significantly increase the steel's hardness. Moreover, special steel often undergoes heat treatment processes such as quenching and tempering, which further refine its microstructure and enhance its hardness. Furthermore, the hardness of special steel can also be influenced by the manufacturing processes employed, such as hot rolling or cold working. These processes deform the steel, align its grain structure, and minimize any defects or impurities, resulting in a more uniform and harder material. The hardness of special steel plays a vital role in various industries where strength, wear resistance, and resistance to deformation are crucial. For instance, in the automotive industry, special steel is utilized in the production of engine parts, gears, and axles, all of which require high hardness to withstand challenging conditions and loads. Similarly, in the construction industry, special steel is used for manufacturing tools, cutting blades, and reinforcement bars, where hardness is essential for longevity and performance. In conclusion, special steel's contribution to product hardness is attributed to its unique alloying elements, manufacturing techniques, and heat treatments. Its ability to form various microstructures and its resistance to deformation make it an excellent material for applications where hardness is vital for performance and durability.
- Q: How is corrosion-resistant steel used in marine applications?
- Corrosion-resistant steel is extensively used in marine applications due to its ability to withstand the harsh environment of seawater. It is employed in the construction of various marine structures such as ships, offshore platforms, and coastal infrastructure. This type of steel provides exceptional resistance to corrosion, preventing the degradation of materials and ensuring the longevity and safety of marine structures. Additionally, corrosion-resistant steel is used in the production of marine equipment, such as propellers, valves, and pipelines, as it offers superior durability and protection against corrosion caused by saltwater exposure.
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SAE 4340 Alloy Steel Round Bar SCM430 Steel Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 50000 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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