Grade 4340 (ASTM A29/A29M) Alloy Steel Round Bar
- 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
Specifications of Round Bar
1. Alloy steel round bar
2. Dia:16mm~250mm
3. Length: 6m, 9m, 12m or as customer’s request
4. Tolerance: Within ±5% for weight; ±2mm for diameter
5. Note: The price can be better is the quantity is good
Equivement Grade
DIN:34CRNIMO
SAE:4340
JIS:SNCM439(SNCM8)
BS:817M40
UNI:40NiCrMo7
Chemical Composition
| C | Si | Mn | S | P | Cr | Ni | Cu | Mo |
| 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | ≤0.025 | ≤0.025 | 0.60-0.90 | 1.25-1.65 | ≤0.025 | 0.15-0.25 |
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Carbon steel: Carbon tool steel /Carbon Structural Steel
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Usage and Applications of Round Bar
1. Chinese standard steel bar is often used where large amounts of steel need to be formed, for example as structural steel.
2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.
3. Steel round bar is used in construction and a large number of architectural and engineering structures.
Packaging & Delivery of Round Bar
Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)
Delivery Detail: 15~45 days
Trade terms: FOB, CFR, CIF
MOQ: 30 metric tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.
Weight: Theprice invoicing on theoretical weight basis or actual weight basis depends on customer’s request.
Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.
Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.
Production Flow of Round Bar
1. The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process.
2. Material prepare (billet) — heat up — rough rolling — precision rolling — cooling — packing — storage and transportation
FAQ:
Q1: Why buy Materials & Equipment from OKorder.com?
A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.
Q2: How do we guarantee the quality of our products?
A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.
Q3: How soon can we receive the product after purchase?
A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
Q4: What makes stainless steel stainless?
A4: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
Q5: Can stainless steel rust?
A5: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.
- Q: How does special steel contribute to reducing material waste?
- Special steel contributes to reducing material waste through its exceptional properties and capabilities. Firstly, special steel is highly durable and has a longer lifespan compared to other materials, allowing for extended use before replacement or repair is needed. This reduces the amount of waste generated from frequent replacements. Additionally, special steel can be recycled and reused multiple times without losing its quality or performance. This promotes a circular economy by minimizing the need for raw materials extraction and reducing the overall waste generated from manufacturing processes. Furthermore, special steel's versatility and strength enable the creation of lighter and more efficient products, resulting in reduced material consumption. By utilizing special steel in various industries, we can significantly contribute to the reduction of material waste and promote a more sustainable approach to resource management.
- Q: Can special steel be used in the production of knives and blades?
- Yes, special steel can be used in the production of knives and blades. Special steel, such as stainless steel or high carbon steel, offers excellent hardness, corrosion resistance, and edge retention properties, making it suitable for manufacturing high-quality and durable knives and blades.
- Q: How is high-temperature stainless steel used in the production of gas turbines?
- High-temperature stainless steel is used in the production of gas turbines due to its excellent heat resistance and corrosion properties. It is used to fabricate components such as combustion chambers, turbine blades, and exhaust systems, which are exposed to extreme temperatures and corrosive environments. The high-temperature stainless steel ensures the durability and efficiency of gas turbines, allowing them to operate at high temperatures without compromising performance or longevity.
- Q: How is case-hardening steel used in the production of gears and camshafts?
- Case-hardening steel is used in the production of gears and camshafts to enhance their strength and durability. This process involves heating the steel to a high temperature and then rapidly cooling it, creating a hard outer layer while maintaining a softer, more ductile core. This hardened surface layer provides resistance to wear, abrasion, and fatigue, ensuring the gears and camshafts can handle the demands of their respective applications.
- Q: How does special steel contribute to the telecommunications aftermarket industry?
- Special steel plays a crucial role in the telecommunications aftermarket industry by providing the necessary materials for the manufacturing and maintenance of various telecommunications equipment. This type of steel is specifically designed to possess exceptional properties, such as high strength, corrosion resistance, and durability, which are essential for the demanding conditions of the telecommunications sector. One of the main contributions of special steel to the telecommunications aftermarket industry is its use in the production of communication towers and transmission structures. These structures need to withstand extreme weather conditions, including strong winds and heavy loads, while also providing reliable support for antennas and other equipment. Special steel is capable of meeting these requirements, ensuring the longevity and stability of communication towers. Furthermore, special steel is extensively used in the manufacturing of cables and wires used in telecommunications systems. These cables need to transmit signals without any loss or interference, and the unique properties of special steel, such as high electrical conductivity and low resistance, make it an ideal material for this purpose. The use of special steel in cables helps maintain the quality and efficiency of telecommunications networks. Another significant contribution of special steel is in the production of equipment enclosures and cabinets. These enclosures provide protection to sensitive electronic components from environmental factors, such as moisture, dust, and extreme temperatures. Special steel, with its corrosion-resistant properties, ensures the longevity and reliability of these enclosures, safeguarding the valuable equipment inside. Moreover, special steel is also utilized in the manufacturing of various components and accessories used in the telecommunications aftermarket industry. These include connectors, brackets, and hardware, which are essential for assembling and maintaining telecommunications equipment. Special steel's high strength and durability make it a preferred choice for these components, ensuring their long-lasting performance. In conclusion, special steel contributes significantly to the telecommunications aftermarket industry by providing the necessary materials for the manufacturing and maintenance of various telecommunications equipment. Its exceptional properties, including high strength, corrosion resistance, and durability, make it an ideal choice for communication towers, cables, enclosures, and various components. By utilizing special steel, the telecommunications industry can ensure the reliability, efficiency, and longevity of its equipment, ultimately benefiting both service providers and end-users.
- Q: How does special steel contribute to the oil and gas aftermarket industry?
- Due to its unique properties and capabilities, special steel plays a vital role in the oil and gas aftermarket industry. Its resistance to corrosion makes it well-suited for use in the harsh and corrosive environments commonly found in this sector. By preventing corrosion, special steel extends the lifespan of equipment and components, reducing the need for frequent replacements and maintenance. Additionally, special steel offers high strength and durability, enabling it to withstand the extreme pressures and temperatures encountered in oil and gas operations. This strength ensures that equipment and components made from special steel can function reliably and efficiently, even under demanding conditions. Moreover, special steel can be customized to meet the specific requirements of the oil and gas industry. With its various grades and compositions, special steel can possess specific properties, such as resistance to sulfide stress cracking, hydrogen embrittlement, and high-temperature oxidation. These tailored properties make special steel suitable for critical applications, including wellheads, pipelines, valves, and other equipment used in the oil and gas aftermarket industry. Furthermore, special steel allows for the production of complex and intricate components that are essential for the oil and gas sector. Its excellent machinability and weldability enable the creation of precision-engineered parts, ensuring the efficient and reliable operation of oil and gas equipment. In conclusion, special steel plays a significant role in the oil and gas aftermarket industry by providing corrosion resistance, high strength, durability, customization options, and the ability to manufacture intricate components. These properties make special steel indispensable in ensuring the safety, reliability, and efficiency of operations in the oil and gas sector.
- Q: How does special steel contribute to the pharmaceutical aftermarket industry?
- Special steel plays a significant role in the pharmaceutical aftermarket industry by providing high-quality materials for manufacturing critical components such as machinery, equipment, and tools. The unique properties of special steel, such as corrosion resistance, strength, and durability, ensure the production of efficient and safe pharmaceutical products. Additionally, special steel's ability to withstand extreme temperatures and pressures enables the creation of advanced processing systems, leading to improved efficiency and productivity in pharmaceutical manufacturing.
- Q: What are the properties of structural steel?
- Structural steel possesses several key properties that make it an ideal material for construction. Firstly, it has high strength, allowing it to bear heavy loads and resist deformation. Additionally, it exhibits excellent ductility, meaning it can be easily shaped without breaking. Structural steel is also highly durable and corrosion-resistant, providing long-lasting stability to buildings and structures. Moreover, it offers versatility in terms of design and construction methods. Finally, it is a sustainable and recyclable material, making it environmentally friendly. Overall, the properties of structural steel contribute to its widespread use in various construction projects.
- Q: How does maraging steel achieve high strength through aging?
- Maraging steel achieves high strength through a process called aging, which involves heating the steel at a specific temperature for a specific duration. During aging, the alloying elements in maraging steel precipitate into fine particles, creating a strengthening effect. This process enhances the steel's hardness, tensile strength, and resistance to deformation, resulting in its high strength properties.
- Q: What are the properties of mold steel?
- Mold steel is known for its excellent hardness, wear resistance, and ability to withstand high temperatures. It possesses good machinability and can be easily polished or textured to create intricate mold designs. Mold steel also exhibits high toughness and dimensional stability, ensuring long-lasting and precise molds. Additionally, it is resistant to corrosion and offers good heat conductivity, making it suitable for various molding applications in industries such as automotive, aerospace, and consumer goods.
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Grade 4340 (ASTM A29/A29M) Alloy Steel Round Bar
- 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
OKorder Financial Service
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